Sonnetvsstockfish-1320
Halbzuege (46)
1.e4Sonnet
1. Observe Halbzug 1, Weiss am Zug. Phase: Eroeffnung. Material gleich. Legale Zuege: 20. Criticality: 0.30.
- material-counter0ms
2. Recall Position recall_position disabled for this agent (tool_config.memory_recall=false).
3. Recall Opponent recall_opponent disabled for this agent (tool_config.memory_recall=false).
4. Research Web search (opening): From the starting position, White's opening strategy revolves around three universal pillars: seizing central control (especially the e4 and d4 squares), rapidly mobilizing pieces to active squares,…
- web_search.claude_cli42415ms · $0.0201
full reasoning
Web search (opening): From the starting position, White's opening strategy revolves around three universal pillars: seizing central control (especially the e4 and d4 squares), rapidly mobilizing pieces to active squares, and safeguarding the king via early castl…
5. Plan Phase: opening. Establish central presence with e4 or d4, develop both knights and bishops to active squares, and prepare early kingside castling within the next 4-5 moves to connect rooks and remove the king from the ce…
- llm.plan13549ms · $0.0064
full reasoning
Phase: opening. Establish central presence with e4 or d4, develop both knights and bishops to active squares, and prepare early kingside castling within the next 4-5 moves to connect rooks and remove the king from the center. According to the research cited above, seize lasting central control via the e4/d4 complex, convert that space advantage into piece activity, and avoid self-inflicted pawn weaknesses that could be exploited in the endgame. Critical: No opponent threats yet — full freedom to choose central strategy (e4 = open dynamic, d4 = positional/structural); Own weakness: zero pieces developed, king uncastled — both must be resolved before any attack; Concrete priority: do not waste tempo; every move should serve development or central control.
6. Candidates Candidates: e4 (Seizes central e4/d4 complex immediately, opens lines for bishop and queen, enables rapid kingside castling.) | d4 (Positional/structural central control, supports queenside development, leads to solid IQ…
- chess.js.legal_moves0ms
- llm.candidates9993ms · $0.0036
full reasoning
Candidates: e4 (Seizes central e4/d4 complex immediately, opens lines for bishop and queen, enables rapid kingside castling.) | d4 (Positional/structural central control, supports queenside development, leads to solid IQP or pawn-chain structures.) | Nf3 (Develops knight to best square, controls e5/d4, flexible — works with both e4 and d4 plans next move.)
7. Verify Alle 3 Kandidaten legal. cloud_eval disabled (default).
- chess.js.legal_recheck0ms
8. Reflect Final pick: e4 — Immediately claims the critical e4/d4 central squares, opens diagonals for the dark-squared bishop and queen, and sets up rapid kingside castling — the most forcing first move per classical opening theor…
- llm.reflect7877ms · $0.0024
full reasoning
Final pick: e4 — Immediately claims the critical e4/d4 central squares, opens diagonals for the dark-squared bishop and queen, and sets up rapid kingside castling — the most forcing first move per classical opening theory.. Rejected: d2d4, g1f3.
9. Commit Commit e4 (e2e4).
2...d5stockfish-1320
- 1. Observe— missing —
- 2. Recall Position— missing —
- 3. Recall Opponent— missing —
- 4. Research— missing —
- 5. Plan— missing —
- 6. Candidates— missing —
- 7. Verify— missing —
- 8. Reflect— missing —
9. Commit Engine stockfish-1320 (stockfish UCI_Elo 1320) pick: d7d5
- stockfish_uci1006ms
3.exd5Sonnet
1. Observe Halbzug 3, Weiss am Zug. Phase: Eroeffnung. Material gleich. Legale Zuege: 31. Criticality: 0.30.
- material-counter0ms
2. Recall Position recall_position disabled for this agent (tool_config.memory_recall=false).
3. Recall Opponent recall_opponent disabled for this agent (tool_config.memory_recall=false).
4. Research Web search (opening): The position after 1.e4 d5 is the Scandinavian Defense (Center Counter). White's main strategic prescription is to capture on d5 with 2.exd5 and immediately follow up with d4 to establish a dominant…
- web_search.claude_cli41402ms · $0.0236
full reasoning
Web search (opening): The position after 1.e4 d5 is the Scandinavian Defense (Center Counter). White's main strategic prescription is to capture on d5 with 2.exd5 and immediately follow up with d4 to establish a dominant two-pawn center. This grants White a spac…
5. Plan Phase: opening. Capture the advanced d5 pawn to remove Black's central outpost, then immediately plant a second pawn in the center to build a dominant two-pawn complex. Develop the kingside knight with tempo against Blac…
- llm.plan17396ms · $0.0106
full reasoning
Phase: opening. Capture the advanced d5 pawn to remove Black's central outpost, then immediately plant a second pawn in the center to build a dominant two-pawn complex. Develop the kingside knight with tempo against Black's misplaced queen, forcing her to waste a move. Aim for early kingside castling within 3-4 moves. According to the Scandinavian research cited above, exploit the two-pawn center and superior space to prepare the powerful d5 pawn break in the middlegame — most devastating when Black's king remains uncastled — while converting long-term structural and rook-coordination advantages in the endgame. Critical: Black's d5 pawn is a central outpost that must be challenged immediately — leaving it would cede space; After recapture Black's queen will be exposed and lose tempo relocating, giving White a clear development lead; No immediate threats from Black — White has full freedom to dictate the pawn structure; White must avoid premature piece exchanges that would let Black equalize without the tempo-loss liability.
6. Candidates Candidates: exd5 (Executes the plan's first priority: capture Black's central outpost, forcing queen recapture and immediate tempo loss.) | Nf3 (Develops kingside knight toward castling; after exd5 Qxd5, Nf3 attacks the …
- chess.js.legal_moves0ms
- llm.candidates23362ms · $0.0178
full reasoning
Candidates: exd5 (Executes the plan's first priority: capture Black's central outpost, forcing queen recapture and immediate tempo loss.) | Nf3 (Develops kingside knight toward castling; after exd5 Qxd5, Nf3 attacks the exposed queen with gain of tempo.) | Nc3 (Develops queenside knight, supports the d4 pawn break needed to build the two-pawn central complex.)
7. Verify Alle 3 Kandidaten legal. cloud_eval disabled (default).
- chess.js.legal_recheck0ms
8. Reflect Final pick: exd5 — Captures Black's d5 outpost immediately, forcing Qxd5 which exposes the queen to Nf3 tempo-gaining attack next move. Builds White's two-pawn central complex and opens the position favorably per Scandin…
- llm.reflect12561ms · $0.0069
full reasoning
Final pick: exd5 — Captures Black's d5 outpost immediately, forcing Qxd5 which exposes the queen to Nf3 tempo-gaining attack next move. Builds White's two-pawn central complex and opens the position favorably per Scandinavian theory.. Rejected: g1f3, b1c3.
9. Commit Commit exd5 (e4d5).
4...e6stockfish-1320
- 1. Observe— missing —
- 2. Recall Position— missing —
- 3. Recall Opponent— missing —
- 4. Research— missing —
- 5. Plan— missing —
- 6. Candidates— missing —
- 7. Verify— missing —
- 8. Reflect— missing —
9. Commit Engine stockfish-1320 (stockfish UCI_Elo 1320) pick: e7e6
- stockfish_uci1004ms
5.dxe6Sonnet
1. Observe Halbzug 5, Weiss am Zug. Phase: Eroeffnung. Weiss +1 Punkte. Legale Zuege: 31. Criticality: 0.30.
- material-counter0ms
2. Recall Position recall_position disabled for this agent (tool_config.memory_recall=false).
3. Recall Opponent recall_opponent disabled for this agent (tool_config.memory_recall=false).
4. Research Web search (opening): The position arises after 1.e4 d5 2.exd5 e6, known as the Icelandic-Palme Gambit territory. Black sacrifices a pawn for rapid development and the initiative, aiming to castle queenside and create a …
- web_search.claude_cli104788ms · $0.0710
full reasoning
Web search (opening): The position arises after 1.e4 d5 2.exd5 e6, known as the Icelandic-Palme Gambit territory. Black sacrifices a pawn for rapid development and the initiative, aiming to castle queenside and create a kingside pawn storm. White is materially a…
5. Plan Phase: opening. Decide between accepting the Icelandic-Palme Gambit (dxe6 → immediate queen exchange to drain Black's compensation) or declining with d4 (French Exchange-like solidity, space dominance). Either way, devel…
- llm.plan23875ms · $0.0163
full reasoning
Phase: opening. Decide between accepting the Icelandic-Palme Gambit (dxe6 → immediate queen exchange to drain Black's compensation) or declining with d4 (French Exchange-like solidity, space dominance). Either way, develop Nf3 and Bc4/Bb5 with tempo, castle kingside within 3 moves, and prevent Black from recapturing the d5 pawn cheaply. Convert White's extra pawn or spatial superiority into a winning endgame by defusing Black's initiative early — according to web research on the Icelandic-Palme, the queen-exchange line (dxe6 → Qe2+) is the most clinical way to neutralize Black's attacking compensation and reach a structurally superior endgame. Critical: Black threatens ...Nf6 targeting the d5 pawn with tempo; accepting gambit gives Black fast piece development and queenside castling plans; declining with d4 risks transposing to a passive French Exchange structure but maintains solidity; White must not waste moves trying to hold d5 at all costs — development and king safety outweigh the extra pawn.
6. Candidates Candidates: dxe6 (Accepts gambit; Qe2+ queen-exchange follows to drain Black's compensation clinically per web research.) | Nf3 (Natural development; contests d5 pressure, prepares Bc4/castle, keeps gambit accept/decline…
- chess.js.legal_moves0ms
- llm.candidates48761ms · $0.0295
full reasoning
Candidates: dxe6 (Accepts gambit; Qe2+ queen-exchange follows to drain Black's compensation clinically per web research.) | Nf3 (Natural development; contests d5 pressure, prepares Bc4/castle, keeps gambit accept/decline flexible.) | d4 (Solid French Exchange-like decline; central space domination without granting Black fast piece play.)
7. Verify Alle 3 Kandidaten legal. cloud_eval disabled (default).
- chess.js.legal_recheck0ms
8. Reflect Final pick: dxe6 — Accepts the gambit then Qe2+ forces queen exchange, stripping Black's attacking compensation immediately and yielding a structurally superior endgame with an extra pawn — the clinical refutation identi…
- llm.reflect34290ms · $0.0265
full reasoning
Final pick: dxe6 — Accepts the gambit then Qe2+ forces queen exchange, stripping Black's attacking compensation immediately and yielding a structurally superior endgame with an extra pawn — the clinical refutation identified in Icelandic-Palme web research.. Rejected: g1f3, d2d4.
9. Commit Commit dxe6 (d5e6).
6...Bxe6stockfish-1320
- 1. Observe— missing —
- 2. Recall Position— missing —
- 3. Recall Opponent— missing —
- 4. Research— missing —
- 5. Plan— missing —
- 6. Candidates— missing —
- 7. Verify— missing —
- 8. Reflect— missing —
9. Commit Engine stockfish-1320 (stockfish UCI_Elo 1320) pick: c8e6
- stockfish_uci1006ms
7.Bb5+Sonnet
1. Observe Halbzug 7, Weiss am Zug. Phase: Eroeffnung. Weiss +1 Punkte. Legale Zuege: 29. Criticality: 0.30.
- material-counter0ms
2. Recall Position recall_position disabled for this agent (tool_config.memory_recall=false).
3. Recall Opponent recall_opponent disabled for this agent (tool_config.memory_recall=false).
4. Research Web search returned no content (Claude CLI subprocess timed out after 120000ms).
- web_search.claude_cli120092ms · fail: Claude CLI subprocess timed out after 120000ms
5. Plan Phase: opening. Halbzug 7, Weiss am Zug. Phase: Eroeffnung. Weiss +1 Punkte. Legale Zuege: 29. Criticality: 0.30. No memory context available. Plan: develop pieces, control the center, castle soon. [LLM-Error: Claude CLI…
full reasoning
Phase: opening. Halbzug 7, Weiss am Zug. Phase: Eroeffnung. Weiss +1 Punkte. Legale Zuege: 29. Criticality: 0.30. No memory context available. Plan: develop pieces, control the center, castle soon. [LLM-Error: Claude CLI subprocess timed out after 120000ms]
6. Candidates Candidates: Bb5+ (Develops bishop with check per Ruy Lopez theory; forces Black to react, gaining tempo in open center.) | d4 (Seizes center immediately; Wikibooks theory confirms c3+d4 is White's core plan after 1.e4 op…
- chess.js.legal_moves0ms
- llm.candidates76929ms · $0.0504
full reasoning
Candidates: Bb5+ (Develops bishop with check per Ruy Lopez theory; forces Black to react, gaining tempo in open center.) | d4 (Seizes center immediately; Wikibooks theory confirms c3+d4 is White's core plan after 1.e4 openings.) | Nf3 (Classical knight development controlling e5/d4; prepares kingside castle per standard opening principles.)
7. Verify Alle 3 Kandidaten legal. cloud_eval disabled (default).
- chess.js.legal_recheck0ms
8. Reflect Final pick: Bb5+ — Develops bishop with check, forcing Black to react immediately. Per Ruy Lopez theory (Wikibooks), Bb5 pressures king and disrupts development; the check gains a free tempo while Black's e6 bishop canno…
- llm.reflect100858ms · $0.0620
full reasoning
Final pick: Bb5+ — Develops bishop with check, forcing Black to react immediately. Per Ruy Lopez theory (Wikibooks), Bb5 pressures king and disrupts development; the check gains a free tempo while Black's e6 bishop cannot block.. Rejected: d2d4, g1f3.
9. Commit Commit Bb5+ (f1b5).
8...Nc6stockfish-1320
- 1. Observe— missing —
- 2. Recall Position— missing —
- 3. Recall Opponent— missing —
- 4. Research— missing —
- 5. Plan— missing —
- 6. Candidates— missing —
- 7. Verify— missing —
- 8. Reflect— missing —
9. Commit Engine stockfish-1320 (stockfish UCI_Elo 1320) pick: b8c6
- stockfish_uci1004ms
9.Nf3Sonnet
1. Observe Halbzug 9, Weiss am Zug. Phase: Eroeffnung. Weiss +1 Punkte. Legale Zuege: 32. Criticality: 0.30.
- material-counter0ms
2. Recall Position recall_position disabled for this agent (tool_config.memory_recall=false).
3. Recall Opponent recall_opponent disabled for this agent (tool_config.memory_recall=false).
4. Research Web search returned no content (Claude CLI subprocess timed out after 120000ms).
- web_search.claude_cli120091ms · fail: Claude CLI subprocess timed out after 120000ms
5. Plan Phase: opening. Halbzug 9, Weiss am Zug. Phase: Eroeffnung. Weiss +1 Punkte. Legale Zuege: 32. Criticality: 0.30. No memory context available. Plan: develop pieces, control the center, castle soon. [LLM-Error: Claude CLI…
full reasoning
Phase: opening. Halbzug 9, Weiss am Zug. Phase: Eroeffnung. Weiss +1 Punkte. Legale Zuege: 32. Criticality: 0.30. No memory context available. Plan: develop pieces, control the center, castle soon. [LLM-Error: Claude CLI subprocess timed out after 120000ms]
6. Candidates Candidates: Bxc6+ (Removes Nc6 defender, damages Black's pawn structure, forces recapture — classic Ruy Lopez exchange idea.) | Nc3 (Natural development controlling d5/e4, supports future d4 central push per opening plan…
- chess.js.legal_moves0ms
- llm.candidates35318ms · $0.0243
full reasoning
Candidates: Bxc6+ (Removes Nc6 defender, damages Black's pawn structure, forces recapture — classic Ruy Lopez exchange idea.) | Nc3 (Natural development controlling d5/e4, supports future d4 central push per opening plan.) | Nf3 (Develops kingside knight and directly enables kingside castling soon, per stated plan.)
7. Verify Alle 3 Kandidaten legal. cloud_eval disabled (default).
- chess.js.legal_recheck0ms
8. Reflect Final pick: Nf3 — No web research block provided; falling back to general principles. Nf3 develops the last kingside piece, directly enables castling (stated plan), and pressures e5 immediately. Both alternatives leave t…
- llm.reflect47392ms · $0.0372
full reasoning
Final pick: Nf3 — No web research block provided; falling back to general principles. Nf3 develops the last kingside piece, directly enables castling (stated plan), and pressures e5 immediately. Both alternatives leave the kingside king exposed longer.. Rejected: b5c6, b1c3.
9. Commit Commit Nf3 (g1f3).
10...Nf6stockfish-1320
- 1. Observe— missing —
- 2. Recall Position— missing —
- 3. Recall Opponent— missing —
- 4. Research— missing —
- 5. Plan— missing —
- 6. Candidates— missing —
- 7. Verify— missing —
- 8. Reflect— missing —
9. Commit Engine stockfish-1320 (stockfish UCI_Elo 1320) pick: g8f6
- stockfish_uci1022ms
11.O-OSonnet
1. Observe Halbzug 11, Weiss am Zug. Phase: Eroeffnung. Weiss +1 Punkte. Legale Zuege: 32. Criticality: 0.30.
- material-counter0ms
2. Recall Position recall_position disabled for this agent (tool_config.memory_recall=false).
3. Recall Opponent recall_opponent disabled for this agent (tool_config.memory_recall=false).
4. Research Web search (opening): This position is a Ruy Lopez (Spanish Game) with an open center: both e-pawns are off the board and Black has also surrendered the d-pawn, leaving fully open e- and d-files. White's bishop on b5 exe…
- web_search.claude_cli113018ms · $0.0849
full reasoning
Web search (opening): This position is a Ruy Lopez (Spanish Game) with an open center: both e-pawns are off the board and Black has also surrendered the d-pawn, leaving fully open e- and d-files. White's bishop on b5 exerts latent pressure on the Nc6, while Blac…
5. Plan Phase: opening. Castle kingside immediately to activate the h1-rook on the open e-file, then choose between Bxc6 (structural damage to Black's queenside pawns) or d4 (central space). Both plans funnel into the same long-…
- llm.plan30726ms · $0.0218
full reasoning
Phase: opening. Castle kingside immediately to activate the h1-rook on the open e-file, then choose between Bxc6 (structural damage to Black's queenside pawns) or d4 (central space). Both plans funnel into the same long-term setup: Nb1-d2-f1-g3 toward the f5-outpost. Exploit the open e-file with the rook post-castling, maintain the bishop pair as a long-term asset in this open position, and plant a knight on the dominant f5-outpost to paralyze Black's kingside and prevent effective counterplay via ...c5. Critical: King safety — White is still uncastled on an open e-file; Black's Nf6 and Be6 are coordinated and waiting for any tactical opportunity; Bxc6 decision — trading now doubles/isolates Black's queenside pawns but surrenders the bishop pair; delaying keeps tension but lets Black consolidate with ...Be7 and castle; Black's ...c5 break — if allowed, Black equalizes and gains queenside space; White must be ready to meet or prevent it with d4 first; Nb1 is completely undeveloped — Nd2 is the required next route to unblock the c-pawn and start the knight rerouting plan toward f5.
6. Candidates Candidates: O-O (Theory confirms castle before committing: removes king from open e-file, activates rook, fits plan's explicit first priority.) | Bxc6+ (Damages Black's queenside pawn structure; Chessable Exchange Variat…
- chess.js.legal_moves0ms
- llm.candidates60316ms · $0.0160
full reasoning
Candidates: O-O (Theory confirms castle before committing: removes king from open e-file, activates rook, fits plan's explicit first priority.) | Bxc6+ (Damages Black's queenside pawn structure; Chessable Exchange Variation theory supports this as the structural pressure option.) | d4 (Grabs central space immediately, prevents ...c5 equalizing break, pairs with plan's knight rerouting toward f5-outpost.)
7. Verify Alle 3 Kandidaten legal. cloud_eval disabled (default).
- chess.js.legal_recheck0ms
8. Reflect Final pick: O-O — King is exposed on the open e-file with Black's Nf6+Be6 coordinated to exploit it. Castling immediately solves the safety problem and activates Rh1. Bxc6 and d4 are both valid follow-ups from a secure k…
- llm.reflect58802ms · $0.0330
full reasoning
Final pick: O-O — King is exposed on the open e-file with Black's Nf6+Be6 coordinated to exploit it. Castling immediately solves the safety problem and activates Rh1. Bxc6 and d4 are both valid follow-ups from a secure king position.. Rejected: b5c6, d2d4.
9. Commit Commit O-O (e1g1).
12...Bd6stockfish-1320
- 1. Observe— missing —
- 2. Recall Position— missing —
- 3. Recall Opponent— missing —
- 4. Research— missing —
- 5. Plan— missing —
- 6. Candidates— missing —
- 7. Verify— missing —
- 8. Reflect— missing —
9. Commit Engine stockfish-1320 (stockfish UCI_Elo 1320) pick: f8d6
- stockfish_uci1003ms
13.Re1Sonnet
1. Observe Halbzug 13, Weiss am Zug. Phase: Eroeffnung. Weiss +1 Punkte. Legale Zuege: 29. Criticality: 0.30.
- material-counter0ms
2. Recall Position recall_position disabled for this agent (tool_config.memory_recall=false).
3. Recall Opponent recall_opponent disabled for this agent (tool_config.memory_recall=false).
4. Research Web search (opening): In this position White has a concrete structural and developmental edge: the king is safely castled, the Bb5 applies direct pressure to the c6-knight, and Black's king is stranded on e8 on an open e…
- web_search.claude_cli97300ms · $0.0638
full reasoning
Web search (opening): In this position White has a concrete structural and developmental edge: the king is safely castled, the Bb5 applies direct pressure to the c6-knight, and Black's king is stranded on e8 on an open e-file with no d- or e-pawns in front of it…
5. Plan Phase: opening. Activate the f1-rook immediately to e1 to dominate the open e-file, then force d4 to blast the center open while Black's king remains stranded on e8 — denying Black a safe castling haven and making every …
- llm.plan58750ms · $0.0456
full reasoning
Phase: opening. Activate the f1-rook immediately to e1 to dominate the open e-file, then force d4 to blast the center open while Black's king remains stranded on e8 — denying Black a safe castling haven and making every tempo count against the exposed king. Exploit Black's uncastled king on the e-file via Re1 + d4 central break, with Bxc6 as a structural weapon to shatter Black's queenside pawns and eliminate the c6-knight guarding the center, funneling into the Nb1-d2 knight maneuver toward the dominant f5-outpost. Critical: Black's king stranded on e8 on the open e-file is the dominant positional asset — every move must increase that pressure before Black castles; According to web research: d4 must come before Black consolidates; delay allows Black's four active rank-6 pieces to normalize the position; Bxc6 remains a concrete threat: doubling Black's b/c-pawns removes Nc6 (key central and king defender) and is most effective before Black can recapture with the d-pawn; White's Rf1 must reach e1 — currently the only undeveloped major piece; without it the e-file pressure is theoretical, not real; Nb1 is still passive on a1/b1 — the Nd2-f1-g3-f5 maneuver is the long-term piece improvement plan per previous analysis.
6. Candidates Candidates: Re1 (Activates rook to open e-file, pinning Black's king on e8 — the dominant positional asset per the plan.) | Bxc6+ (Shatters Black's queenside pawns, eliminates Nc6 defending the center, forces king exposu…
- chess.js.legal_moves0ms
- llm.candidates9351ms · $0.0036
full reasoning
Candidates: Re1 (Activates rook to open e-file, pinning Black's king on e8 — the dominant positional asset per the plan.) | Bxc6+ (Shatters Black's queenside pawns, eliminates Nc6 defending the center, forces king exposure with check.) | d4 (Central break before Black consolidates — per web research d4 must come before Black's four active pieces normalize.)
7. Verify Alle 3 Kandidaten legal. cloud_eval disabled (default).
- chess.js.legal_recheck0ms
8. Reflect Final pick: Re1 — Activates rook to open e-file, pinning Black's king on e8 — the dominant positional asset per the plan.. Rejected: b5c6, d2d4. [LLM note: Claude CLI subprocess timed out after 120000ms]
9. Commit Commit Re1 (f1e1).
14...h6stockfish-1320
- 1. Observe— missing —
- 2. Recall Position— missing —
- 3. Recall Opponent— missing —
- 4. Research— missing —
- 5. Plan— missing —
- 6. Candidates— missing —
- 7. Verify— missing —
- 8. Reflect— missing —
9. Commit Engine stockfish-1320 (stockfish UCI_Elo 1320) pick: h7h6
- stockfish_uci1007ms
15.d4Sonnet
1. Observe Halbzug 15, Weiss am Zug. Phase: Eroeffnung. Weiss +1 Punkte. Legale Zuege: 34. Criticality: 0.30.
- material-counter0ms
2. Recall Position recall_position disabled for this agent (tool_config.memory_recall=false).
3. Recall Opponent recall_opponent disabled for this agent (tool_config.memory_recall=false).
4. Research Web search returned no content (Claude CLI subprocess timed out after 120000ms).
- web_search.claude_cli120091ms · fail: Claude CLI subprocess timed out after 120000ms
5. Plan Phase: opening. Advance d4 immediately — Black has no central pawn to contest it, threatening d5 which forks Nc6 and Be6 simultaneously. Re1 already dominates the open e-file against Ke8. Force Black to choose between lo…
- llm.plan117763ms · $0.0820
full reasoning
Phase: opening. Advance d4 immediately — Black has no central pawn to contest it, threatening d5 which forks Nc6 and Be6 simultaneously. Re1 already dominates the open e-file against Ke8. Force Black to choose between losing material to d5 or allowing White permanent central control, all while the king stays exposed. Convert the Re1 vs. Ke8 battery plus d4-d5 central wedge into a decisive material or mating advantage before Black can castle to safety, using Bxc6 as a secondary structural weapon to double c-pawns and strip the c6-knight if d5 is adequately defended. Critical: Black's Nf6 and Be6 both hang to a d4-d5 fork — this is the dominant concrete threat; Black may castle kingside immediately to defuse e-file pressure — must be pre-empted or punished; Bxc6 shatters queenside structure but grants bishop pair — execute only if d4-d5 is blocked; Nb1 remains idle on rank 1 and must reach d2 toward f5 outpost after the center is resolved.
6. Candidates Candidates: d4 (Plan's primary instruction: 'advance d4 immediately,' threatening d5 fork hitting Nc6 and Be6 simultaneously.) | Bxc6+ (Plan's 'secondary structural weapon': removes Nc6 defender, shatters c-pawns, gives …
- chess.js.legal_moves0ms
- llm.candidates68737ms · $0.0529
full reasoning
Candidates: d4 (Plan's primary instruction: 'advance d4 immediately,' threatening d5 fork hitting Nc6 and Be6 simultaneously.) | Bxc6+ (Plan's 'secondary structural weapon': removes Nc6 defender, shatters c-pawns, gives forcing check before Black castles.) | Rxe6+ (Cashes in the 'Re1 vs Ke8 battery' immediately, winning Be6 with check and keeping Black's king exposed.)
7. Verify Alle 3 Kandidaten legal. cloud_eval disabled (default).
- chess.js.legal_recheck0ms
8. Reflect Final pick: d4 — Plan's primary instruction: 'advance d4 immediately,' threatening d5 fork hitting Nc6 and Be6 simultaneously.. Rejected: b5c6, e1e6. [LLM note: Claude CLI subprocess timed out after 120000ms]
9. Commit Commit d4 (d2d4).
16...Qd7stockfish-1320
- 1. Observe— missing —
- 2. Recall Position— missing —
- 3. Recall Opponent— missing —
- 4. Research— missing —
- 5. Plan— missing —
- 6. Candidates— missing —
- 7. Verify— missing —
- 8. Reflect— missing —
9. Commit Engine stockfish-1320 (stockfish UCI_Elo 1320) pick: d8d7
- stockfish_uci1005ms
17.Rxe6+Sonnet
1. Observe Halbzug 17, Weiss am Zug. Phase: Mittelspiel. Weiss +1 Punkte. Legale Zuege: 41. Criticality: 0.25.
- material-counter0ms
2. Recall Position recall_position disabled for this agent (tool_config.memory_recall=false).
3. Recall Opponent recall_opponent disabled for this agent (tool_config.memory_recall=false).
4. Research Web search (middlegame): In this d4 middlegame with White's active Bb5 targeting the Nc6 and a rook already posted on the open e-file aimed at Black's uncastled king, White's key strategic theme is exploiting Black's del…
- web_search.claude_cli98715ms · $0.0616
full reasoning
Web search (middlegame): In this d4 middlegame with White's active Bb5 targeting the Nc6 and a rook already posted on the open e-file aimed at Black's uncastled king, White's key strategic theme is exploiting Black's delay in castling. The d4-d5 central break is a …
5. Plan Phase: middlegame. Execute d4-d5 to dislodge Be6, open the e-file fully against Ke8, and force Black to either lose the bishop pair's coordination or face a direct king attack before kingside castling becomes available. …
- llm.plan33763ms · $0.0242
full reasoning
Phase: middlegame. Execute d4-d5 to dislodge Be6, open the e-file fully against Ke8, and force Black to either lose the bishop pair's coordination or face a direct king attack before kingside castling becomes available. Convert White's Re1 battery on the e-file plus Bb5 pressure into a decisive initiative by denying Black a safe castling square, aiming to win material or force a mating net before Black's bishops can activate on open diagonals. Critical: Black can castle kingside (kq rights intact) — clock is ticking on the Re1/Ke8 battery; Nf6 guards e4 and d5, making d4-d5 require calculation of the Nf6 recapture response; Black's bishop pair (Bd6+Be6) becomes dangerous if the position opens — strike before they coordinate; Bxc6 alternative: doubles c-pawns, removes Nc6, opens b-file — structural but slower than d5 push; White's Nb1, Bc1, Qd1 are undeveloped — Re1 pressure alone is insufficient without piece harmonization.
6. Candidates Candidates: Rxe6+ (Exchange sacrifice eliminates Be6, opens f-file, traps king on e8 before Black castles; d5 follows as decisive second blow.) | d5 (Central pawn break dislodges Nc6/Be6 coordination; if Nxd5 then Rxe6+ …
- chess.js.legal_moves0ms
- llm.candidates65291ms · $0.0292
full reasoning
Candidates: Rxe6+ (Exchange sacrifice eliminates Be6, opens f-file, traps king on e8 before Black castles; d5 follows as decisive second blow.) | d5 (Central pawn break dislodges Nc6/Be6 coordination; if Nxd5 then Rxe6+ wins; fits Re1 battery pressure on e-file.) | Bxc6 (Removes key Nc6 defender, doubles Black's c-pawns, opens b-file; structural damage slowing Black's coordination before castling.)
7. Verify Alle 3 Kandidaten legal. cloud_eval disabled (default).
- chess.js.legal_recheck0ms
8. Reflect Final pick: Rxe6+ — Exchange sacrifice eliminates Be6, opens f-file, traps king on e8 before Black castles; d5 follows as decisive second blow.. Rejected: d4d5, b5c6. [LLM note: Claude CLI subprocess timed out after 1200…
full reasoning
Final pick: Rxe6+ — Exchange sacrifice eliminates Be6, opens f-file, traps king on e8 before Black castles; d5 follows as decisive second blow.. Rejected: d4d5, b5c6. [LLM note: Claude CLI subprocess timed out after 120000ms]
9. Commit Commit Rxe6+ (e1e6).
18...fxe6stockfish-1320
- 1. Observe— missing —
- 2. Recall Position— missing —
- 3. Recall Opponent— missing —
- 4. Research— missing —
- 5. Plan— missing —
- 6. Candidates— missing —
- 7. Verify— missing —
- 8. Reflect— missing —
9. Commit Engine stockfish-1320 (stockfish UCI_Elo 1320) pick: f7e6
- stockfish_uci1005ms
19.Nbd2Sonnet
1. Observe Halbzug 19, Weiss am Zug. Phase: Mittelspiel. Schwarz +1 Punkte. Legale Zuege: 38. Criticality: 0.25.
- material-counter0ms
2. Recall Position recall_position disabled for this agent (tool_config.memory_recall=false).
3. Recall Opponent recall_opponent disabled for this agent (tool_config.memory_recall=false).
4. Research Web search (middlegame): This is a Ruy Lopez (Spanish Game) middlegame where White has already castled kingside and established a strong d4 center, while Black's king remains exposed on e8 with castling rights but not ye…
- web_search.claude_cli78825ms · $0.0536
full reasoning
Web search (middlegame): This is a Ruy Lopez (Spanish Game) middlegame where White has already castled kingside and established a strong d4 center, while Black's king remains exposed on e8 with castling rights but not yet exercised. The Bb5 pins and pressures the N…
5. Plan Phase: middlegame. Develop Nb1-d2 immediately to reinforce d4 and begin the classic Ruy Lopez rerouting toward f5 outpost, then execute d4-d5 to crack the e6 pawn and open central files against Black's exposed king on e8…
- llm.plan35269ms · $0.0295
full reasoning
Phase: middlegame. Develop Nb1-d2 immediately to reinforce d4 and begin the classic Ruy Lopez rerouting toward f5 outpost, then execute d4-d5 to crack the e6 pawn and open central files against Black's exposed king on e8. Maintain Bb5 pressure on c6 to prevent Black's pieces from coordinating toward a safe castle. Convert Black's king safety deficit and White's space advantage into a decisive kingside attack by rerouting Nb1-d2-f1-g3-f5 while cracking open central files with d4-d5, aiming to win material or force a mating net before Black's bishops activate on open diagonals post-castling. Critical: Black retains kq castling rights — clock is ticking, must generate concrete threats before Ke8-g8 stabilizes the position; Nf6 covers d5 and e4 simultaneously — d4-d5 requires calculating whether Nf6 can be displaced or overloaded first; Nb1 is completely idle and burning tempo — Nd2 is the single most urgent developing move; Bb5 is a dominant piece tying down Nc6 — premature exchange releases Black's coordination and queenside counterplay.
6. Candidates Candidates: Nbd2 (Plan's most urgent move: activates idle Nb1, reinforces d4, launches Nd2-f1-g3-f5 rerouting before Black castles.) | d5 (Central pawn break per plan: cracks e6, opens files against Black's uncastled kin…
- chess.js.legal_moves0ms
- llm.candidates22326ms · $0.0167
full reasoning
Candidates: Nbd2 (Plan's most urgent move: activates idle Nb1, reinforces d4, launches Nd2-f1-g3-f5 rerouting before Black castles.) | d5 (Central pawn break per plan: cracks e6, opens files against Black's uncastled king on e8, gains space.) | Bxh6 (Wins a pawn and damages Black's kingside structure immediately before Ke8-g8 stabilizes; concrete material gain.)
7. Verify Alle 3 Kandidaten legal. cloud_eval disabled (default).
- chess.js.legal_recheck0ms
8. Reflect Final pick: Nbd2 — Plan's most urgent move: activates idle Nb1, reinforces d4, launches Nd2-f1-g3-f5 rerouting before Black castles.. Rejected: d4d5, c1h6. [LLM note: Claude CLI subprocess timed out after 120000ms]
9. Commit Commit Nbd2 (b1d2).
20...O-O-Ostockfish-1320
- 1. Observe— missing —
- 2. Recall Position— missing —
- 3. Recall Opponent— missing —
- 4. Research— missing —
- 5. Plan— missing —
- 6. Candidates— missing —
- 7. Verify— missing —
- 8. Reflect— missing —
9. Commit Engine stockfish-1320 (stockfish UCI_Elo 1320) pick: e8c8
- stockfish_uci1004ms
21.Bxc6Sonnet
1. Observe Halbzug 21, Weiss am Zug. Phase: Mittelspiel. Schwarz +1 Punkte. Legale Zuege: 33. Criticality: 0.15.
- material-counter0ms
2. Recall Position recall_position disabled for this agent (tool_config.memory_recall=false).
3. Recall Opponent recall_opponent disabled for this agent (tool_config.memory_recall=false).
4. Research Web search (middlegame): This middlegame features opposite-side castling — White's king is safe on g1 while Black's king sits exposed on c8. That makes the position a race: White should attack Black's queenside king befo…
- web_search.claude_cli73791ms · $0.0402
full reasoning
Web search (middlegame): This middlegame features opposite-side castling — White's king is safe on g1 while Black's king sits exposed on c8. That makes the position a race: White should attack Black's queenside king before Black can generate counterplay on the king…
5. Plan Phase: middlegame. Win the opposite-castling race by opening lines toward Black's king on c8 — execute Bxc6 to shatter the queenside pawn cover around the king, then follow with c2-c4 and c4-c5 to tear open the b- or c-f…
- llm.plan33426ms · $0.0235
full reasoning
Phase: middlegame. Win the opposite-castling race by opening lines toward Black's king on c8 — execute Bxc6 to shatter the queenside pawn cover around the king, then follow with c2-c4 and c4-c5 to tear open the b- or c-file. Alternatively, d4-d5 cracks the e6 chain. Activate Nd2 toward c4 or b3 to amplify queenside pressure. According to the web research on opposite-castling races, White must be the first to open a file toward the enemy king — converting the Bb5 structural threat and d4 space advantage into a mating attack on c8 before Black's Bd6-Nf6-Qd7 battery generates queenside counterplay. Critical: Bb5 decision is urgent: trade on c6 now to permanently wreck Black's queenside pawn cover near the king, or retreat and lose a tempo; Black's king on c8 is exposed but still shielded by intact c7-b7-a7 pawns — must open a file before Black consolidates; d4-d5 break tempting but may gift Black an open d-file counterattack; c4-c5 storm is safer and more directed at the king; Black's Nf6 and Bd6 are active — passive White play lets them coordinate for ...Ne4 or ...Ng4 counterplay.
6. Candidates Candidates: Bxc6 (Permanently shatters queenside pawn cover around Black's king on c8; urgent per plan's opposite-castling race logic.) | d5 (Cracks the e6 pawn chain, gains space, and forces Black to react before coordi…
- chess.js.legal_moves0ms
- llm.candidates19823ms · $0.0119
full reasoning
Candidates: Bxc6 (Permanently shatters queenside pawn cover around Black's king on c8; urgent per plan's opposite-castling race logic.) | d5 (Cracks the e6 pawn chain, gains space, and forces Black to react before coordinating ...Ne4 counterplay.) | Ne5 (Centralizes knight with threats on c6 and d7, amplifying queenside pressure toward the exposed king on c8.)
7. Verify Alle 3 Kandidaten legal. cloud_eval disabled (default).
- chess.js.legal_recheck0ms
8. Reflect Final pick: Bxc6 — According to the opposite-castling race principle (TheChessWorld), the first side to open a file toward the enemy king wins. Bxc6 bxc6 rips open the b-file immediately and permanently removes the b7 pa…
- llm.reflect98879ms · $0.0677
full reasoning
Final pick: Bxc6 — According to the opposite-castling race principle (TheChessWorld), the first side to open a file toward the enemy king wins. Bxc6 bxc6 rips open the b-file immediately and permanently removes the b7 pawn shield around Kc8, enabling Qa4/Rb1/c4-c5 storm before Black consolidates.. Rejected: d4d5, f3e5.
9. Commit Commit Bxc6 (b5c6).
22...Qxc6stockfish-1320
- 1. Observe— missing —
- 2. Recall Position— missing —
- 3. Recall Opponent— missing —
- 4. Research— missing —
- 5. Plan— missing —
- 6. Candidates— missing —
- 7. Verify— missing —
- 8. Reflect— missing —
9. Commit Engine stockfish-1320 (stockfish UCI_Elo 1320) pick: d7c6
- stockfish_uci1005ms
23.b4Sonnet
1. Observe Halbzug 23, Weiss am Zug. Phase: Mittelspiel. Schwarz +1 Punkte. Legale Zuege: 26. Criticality: 0.15.
- material-counter0ms
2. Recall Position recall_position disabled for this agent (tool_config.memory_recall=false).
3. Recall Opponent recall_opponent disabled for this agent (tool_config.memory_recall=false).
4. Research Web search (middlegame): White faces an opposite-side castling middlegame: White's king shelters on g1 (kingside) while Black's king sits on c8 (queenside). This structure demands a race — White must storm Black's queens…
- web_search.claude_cli58885ms · $0.0328
full reasoning
Web search (middlegame): White faces an opposite-side castling middlegame: White's king shelters on g1 (kingside) while Black's king sits on c8 (queenside). This structure demands a race — White must storm Black's queenside (b4–b5, a4–a5 pawn advances) before Black…
5. Plan Phase: middlegame. Develop Bc1 to f4 first — as the provided research and the Chess.com opposite-castling forum confirm, piece development before pawns in these races — then launch b4-b5 queenside pawn storm to crack ope…
- llm.plan100777ms · $0.0694
full reasoning
Phase: middlegame. Develop Bc1 to f4 first — as the provided research and the Chess.com opposite-castling forum confirm, piece development before pawns in these races — then launch b4-b5 queenside pawn storm to crack open files toward c8; hold Nf3 in place to cover g2 against Qc6's diagonal pressure. Win the opposite-castling race by opening the b- or c-file against Black's king on c8 via b4-b5, using d4-d5 as a secondary break to displace Bd6 and pry open the center, before Black's Qc6-Bd6 battery generates kingside threats via ...g5-g4 or ...e5. Critical: Nf3 cannot vacate f3 — Qc6 controls the a8-h1 diagonal straight to g2; any Nf3 retreat opens Qxg2; Bc1 is White's most urgent undeveloped piece — f4 contests Bd6 and keeps e3 open for queen rerouting; Black's ...e5 central break threatens to dissolve d4 and free Black's pieces — must be anticipated; b4-b5 is the primary file-opening weapon; North Texas Chess Academy and Wikipedia on pawn storms confirm speed is decisive in opposite-castling races.
6. Candidates Candidates: b4 (Launches the primary b4-b5 queenside pawn storm to crack files toward Black's king on c8.) | d5 (Secondary central break displaces Bd6 and denies Black the ...e5 dissolving counterplay.) | Ne4 (Activates …
- chess.js.legal_moves0ms
- llm.candidates19806ms · $0.0125
full reasoning
Candidates: b4 (Launches the primary b4-b5 queenside pawn storm to crack files toward Black's king on c8.) | d5 (Secondary central break displaces Bd6 and denies Black the ...e5 dissolving counterplay.) | Ne4 (Activates Nd2 toward the kingside/center, supports d5 break and future Nc5 outpost.)
7. Verify Alle 3 Kandidaten legal. cloud_eval disabled (default).
- chess.js.legal_recheck0ms
8. Reflect Final pick: b4 — Directly launches the b4-b5 pawn storm against Kc8; in opposite-side castling, speed is decisive and b5 will rip open the b-file before Black's Qc6-Bd6 battery generates kingside threats. Most forcing mo…
- llm.reflect118243ms · $0.0827
full reasoning
Final pick: b4 — Directly launches the b4-b5 pawn storm against Kc8; in opposite-side castling, speed is decisive and b5 will rip open the b-file before Black's Qc6-Bd6 battery generates kingside threats. Most forcing move available.. Rejected: d4d5, d2e4.
9. Commit Commit b4 (b2b4).
24...Bxb4stockfish-1320
- 1. Observe— missing —
- 2. Recall Position— missing —
- 3. Recall Opponent— missing —
- 4. Research— missing —
- 5. Plan— missing —
- 6. Candidates— missing —
- 7. Verify— missing —
- 8. Reflect— missing —
9. Commit Engine stockfish-1320 (stockfish UCI_Elo 1320) pick: d6b4
- stockfish_uci1008ms
25.a3Sonnet
1. Observe Halbzug 25, Weiss am Zug. Phase: Mittelspiel. Schwarz +2 Punkte. Legale Zuege: 26. Criticality: 0.00.
- material-counter0ms
2. Recall Position recall_position disabled for this agent (tool_config.memory_recall=false).
3. Recall Opponent recall_opponent disabled for this agent (tool_config.memory_recall=false).
4. Research Web search (middlegame): In this Nimzo-Indian-flavored middlegame, White holds central space with the d4 pawn but faces an active Black bishop on b4, a commanding queen on c6 pressuring the center, and a queenside-castle…
- web_search.claude_cli59252ms · $0.0404
full reasoning
Web search (middlegame): In this Nimzo-Indian-flavored middlegame, White holds central space with the d4 pawn but faces an active Black bishop on b4, a commanding queen on c6 pressuring the center, and a queenside-castled Black king on c8. White's most important st…
5. Plan Phase: middlegame. As the web research confirms, execute d4-d5 as the primary central break to open lines against Black's c8 king; precede it by developing Bc1-f4 to activate the dormant bishop and contest Black's queen …
- llm.plan42272ms · $0.0345
full reasoning
Phase: middlegame. As the web research confirms, execute d4-d5 as the primary central break to open lines against Black's c8 king; precede it by developing Bc1-f4 to activate the dormant bishop and contest Black's queen diagonal, and play a3 to evict Bb4 and free Nd2 for regrouping. Win the opposite-castling race by combining a3 (Bb4 eviction), Bc1-f4 (piece activation), and d4-d5 (center break) to open the c- and d-files against Black's king on c8 before Black's Nf6 and Qc6 generate decisive kingside threats targeting g2. Critical: Qc6 has a live diagonal into g2 — Nf3 must remain on f3 as the sole guardian; Bb4 pins Nd2 and stifles White's development; a3 is the most urgent structural move; d4-d5 break is the decisive weapon but requires Bc1 active and Nd2 freed first; Black rooks on d8/h8 will coordinate powerfully once the center opens — White must break before that.
6. Candidates Candidates: a3 (Plan's most urgent structural move: evicts Bb4, frees Nd2 from pin, enables regrouping.) | d5 (Plan's decisive central break: opens c/d-files against Black's king on c8 before Black coordinates.) | Ne4 (A…
- chess.js.legal_moves0ms
- llm.candidates41792ms · $0.0366
full reasoning
Candidates: a3 (Plan's most urgent structural move: evicts Bb4, frees Nd2 from pin, enables regrouping.) | d5 (Plan's decisive central break: opens c/d-files against Black's king on c8 before Black coordinates.) | Ne4 (Activates Nd2 to central e4, part of plan's regrouping theme after Bb4 pressure is resolved.)
7. Verify Alle 3 Kandidaten legal. cloud_eval disabled (default).
- chess.js.legal_recheck0ms
8. Reflect Final pick: a3 — Plan labels a3 the most urgent structural move: evicts Bb4 from its attack on Nd2, restores knight mobility, and satisfies one of two preconditions (Nd2 freed) the plan requires before d5 is safe to exec…
- llm.reflect79822ms · $0.0649
full reasoning
Final pick: a3 — Plan labels a3 the most urgent structural move: evicts Bb4 from its attack on Nd2, restores knight mobility, and satisfies one of two preconditions (Nd2 freed) the plan requires before d5 is safe to execute.. Rejected: d4d5, d2e4.
9. Commit Commit a3 (a2a3).
26...Bd6stockfish-1320
- 1. Observe— missing —
- 2. Recall Position— missing —
- 3. Recall Opponent— missing —
- 4. Research— missing —
- 5. Plan— missing —
- 6. Candidates— missing —
- 7. Verify— missing —
- 8. Reflect— missing —
9. Commit Engine stockfish-1320 (stockfish UCI_Elo 1320) pick: b4d6
- stockfish_uci1005ms
27.Ne4Sonnet
1. Observe Halbzug 27, Weiss am Zug. Phase: Mittelspiel. Schwarz +2 Punkte. Legale Zuege: 25. Criticality: 0.00.
- material-counter0ms
2. Recall Position recall_position disabled for this agent (tool_config.memory_recall=false).
3. Recall Opponent recall_opponent disabled for this agent (tool_config.memory_recall=false).
4. Research Web search (middlegame): This is an IQP-flavored middlegame (White's d4 pawn lacks pawn neighbors on c and e) with opposite-side castling: White's king sits on g1, Black's on c8. Both factors demand dynamic, concrete pla…
- web_search.claude_cli78273ms · $0.0482
full reasoning
Web search (middlegame): This is an IQP-flavored middlegame (White's d4 pawn lacks pawn neighbors on c and e) with opposite-side castling: White's king sits on g1, Black's on c8. Both factors demand dynamic, concrete play from White before the position simplifies i…
5. Plan Phase: middlegame. Activate the dead Bc1 to f4 immediately, contesting Bd6 and controlling e5; then execute either d4-d5 central break or c2-c4 queenside lever to pry open files against Black's exposed king on c8 before …
- llm.plan52253ms · $0.0416
full reasoning
Phase: middlegame. Activate the dead Bc1 to f4 immediately, contesting Bd6 and controlling e5; then execute either d4-d5 central break or c2-c4 queenside lever to pry open files against Black's exposed king on c8 before Black's Rd8+Qc6 coordinate a decisive g2 attack. Leverage Black's exposed king on c8 and the IQP's dynamic break potential (d5 or c4) to generate a decisive attack before the material deficit forces an endgame where the isolated d4-pawn becomes a permanent structural liability. Critical: Qc6 targets g2 live — Nf3 must remain on f3 as the sole guardian; any Nf3 relocation is a tactical blunder; Bc1 is completely inert and must reach f4 or g5 this move or next — according to the IQP research cited above, failing to activate it cedes the initiative entirely to Black's already-active Bd6+Nf6; Black's Rd8 and Rh8 are both unactivated — White must open queenside files against c8 before Black's rooks join the queen.
6. Candidates Candidates: Ne4 (Unblocks c1-f4 diagonal, activating the dead Bc1 to f4 next move per plan's primary instruction.) | d5 (IQP central break pries open files against Black's exposed king on c8 before Rd8+Qc6 coordinate.) |…
- chess.js.legal_moves0ms
- llm.candidates31843ms · $0.0265
full reasoning
Candidates: Ne4 (Unblocks c1-f4 diagonal, activating the dead Bc1 to f4 next move per plan's primary instruction.) | d5 (IQP central break pries open files against Black's exposed king on c8 before Rd8+Qc6 coordinate.) | c4 (Queenside lever as named in plan; contests the center and opens lines toward Black's c8 king.)
7. Verify Alle 3 Kandidaten legal. cloud_eval disabled (default).
- chess.js.legal_recheck0ms
8. Reflect Final pick: Ne4 — Removes Nd2 from d2, unblocking the c1-d2-e3-f4 diagonal so Bc1 reaches f4 next move per the plan's primary instruction; centralizes the knight on e4 contesting Bd6 and e5 without abandoning g2 protecti…
- llm.reflect92535ms · $0.0760
full reasoning
Final pick: Ne4 — Removes Nd2 from d2, unblocking the c1-d2-e3-f4 diagonal so Bc1 reaches f4 next move per the plan's primary instruction; centralizes the knight on e4 contesting Bd6 and e5 without abandoning g2 protection.. Rejected: d4d5, c2c4.
9. Commit Commit Ne4 (d2e4).
28...Qxe4stockfish-1320
- 1. Observe— missing —
- 2. Recall Position— missing —
- 3. Recall Opponent— missing —
- 4. Research— missing —
- 5. Plan— missing —
- 6. Candidates— missing —
- 7. Verify— missing —
- 8. Reflect— missing —
9. Commit Engine stockfish-1320 (stockfish UCI_Elo 1320) pick: c6e4
- stockfish_uci1025ms
29.Bf4Sonnet
1. Observe Halbzug 29, Weiss am Zug. Phase: Mittelspiel. Schwarz +5 Punkte. Legale Zuege: 28. Criticality: 0.00.
- material-counter0ms
2. Recall Position recall_position disabled for this agent (tool_config.memory_recall=false).
3. Recall Opponent recall_opponent disabled for this agent (tool_config.memory_recall=false).
4. Research Web search (middlegame): White faces a middlegame where Black's queen is powerfully centralized on e4 while White's dark-squared bishop on c1 remains undeveloped by move 15 — a coordination problem. With opposite-side ca…
- web_search.claude_cli54469ms · $0.0289
full reasoning
Web search (middlegame): White faces a middlegame where Black's queen is powerfully centralized on e4 while White's dark-squared bishop on c1 remains undeveloped by move 15 — a coordination problem. With opposite-side castling (White king on g1, Black king on c8), …
5. Plan Phase: middlegame. Activate Bc1 to f4 immediately to contest Bd6 and challenge Qe4's dominance; with the bishop live, prepare Nf3-e5 (the dominant outpost eyeing c6, d7, f7) and follow with c2-c4 or d4-d5 to pry open a f…
- llm.plan53425ms · $0.0333
full reasoning
Phase: middlegame. Activate Bc1 to f4 immediately to contest Bd6 and challenge Qe4's dominance; with the bishop live, prepare Nf3-e5 (the dominant outpost eyeing c6, d7, f7) and follow with c2-c4 or d4-d5 to pry open a file toward the c8 king before Black's material converts. Generate a direct queenside attack against Black's exposed c8 king — using Bf4, Ne5, and a c4/d5 pawn lever to open lines — before the +5 material deficit forces an endgame where the d4 IQP becomes a permanent structural liability. Critical: Qe4 has a live threat on g2 — Nf3 is the sole guardian and cannot relocate until Bc1 covers g2 or Qe4 is forced to retreat; According to the web research cited above, Bc1-e3 or Bc1-f4 is the priority move: it challenges the intrusive queen and breaks its central grip while opening lines for Ra1; Black's Nf6 can jump to g4 or d5 — any tempo lost to passivity lets Black's pieces coordinate a mating attack on the kingside or consolidate the material advantage.
6. Candidates Candidates: Bf4 (Plan's explicit priority: contests Bd6, challenges Qe4's grip, keeps Nf3 on g2 guard.) | d5 (Pawn lever per plan: pries open lines toward c8 king before material deficit converts.) | Ne5 (Dominant outpos…
- chess.js.legal_moves0ms
- llm.candidates34748ms · $0.0244
full reasoning
Candidates: Bf4 (Plan's explicit priority: contests Bd6, challenges Qe4's grip, keeps Nf3 on g2 guard.) | d5 (Pawn lever per plan: pries open lines toward c8 king before material deficit converts.) | Ne5 (Dominant outpost eyeing d7/f7/c6 per plan; viable only after bishop covers g2.)
7. Verify Alle 3 Kandidaten legal. cloud_eval disabled (default).
- chess.js.legal_recheck0ms
8. Reflect Final pick: Bf4 — Bf4 immediately attacks Bd6 (f4→e5→d6 diagonal), forces Black to respond, activates White's last passive piece, and keeps Nf3 anchored on g2 guard — prerequisite before any knight leap to e5.. Rejected:…
- llm.reflect59345ms · $0.0460
full reasoning
Final pick: Bf4 — Bf4 immediately attacks Bd6 (f4→e5→d6 diagonal), forces Black to respond, activates White's last passive piece, and keeps Nf3 anchored on g2 guard — prerequisite before any knight leap to e5.. Rejected: d4d5, f3e5.
9. Commit Commit Bf4 (c1f4).
30...Qxf4stockfish-1320
- 1. Observe— missing —
- 2. Recall Position— missing —
- 3. Recall Opponent— missing —
- 4. Research— missing —
- 5. Plan— missing —
- 6. Candidates— missing —
- 7. Verify— missing —
- 8. Reflect— missing —
9. Commit Engine stockfish-1320 (stockfish UCI_Elo 1320) pick: e4f4
- stockfish_uci1002ms
31.Qe2Sonnet
1. Observe Halbzug 31, Weiss am Zug. Phase: Mittelspiel. Schwarz +8 Punkte. Legale Zuege: 25. Criticality: 0.10.
- material-counter0ms
2. Recall Position recall_position disabled for this agent (tool_config.memory_recall=false).
3. Recall Opponent recall_opponent disabled for this agent (tool_config.memory_recall=false).
4. Research Web search (middlegame): In this middlegame position White faces an actively-placed Black queen on f4 while Black has castled queenside (king on c8). The most important strategic principle that applies here is: a flank a…
- web_search.claude_cli60333ms · $0.0354
full reasoning
Web search (middlegame): In this middlegame position White faces an actively-placed Black queen on f4 while Black has castled queenside (king on c8). The most important strategic principle that applies here is: a flank attack (Black's queen pressing the kingside) i…
5. Plan Phase: middlegame. Play Qe2 to cover g2 along the 2nd rank and liberate Nf3, then activate Ra1 to c1 to pressure c7 directly, and execute d4-d5 central break — per the Chess.com opposite-wing castling principle that whoe…
- llm.plan95331ms · $0.0669
full reasoning
Phase: middlegame. Play Qe2 to cover g2 along the 2nd rank and liberate Nf3, then activate Ra1 to c1 to pressure c7 directly, and execute d4-d5 central break — per the Chess.com opposite-wing castling principle that whoever opens attacking files first seizes the initiative, White must strike before Black's material converts Drive a queenside assault through Ra1-c1 and the d4-d5 lever to open lines against the exposed c8 king, using Ne5 as the dominant outpost once Nf3 is freed — this is the only path to compensation before Black's +8 material advantage forces a lost endgame Critical: Qf4xg2 threat is live every move — Nf3 is pinned to guard duty until Qe2 covers g2 along the 2nd rank; Black king on c8 is the sole target — Rc1 + d5 break opens the d-file and c7 pressure simultaneously; d4 IQP is a long-term structural liability in any endgame — must be used offensively as the d5 break piece now, not defended passively.
6. Candidates Candidates: Qe2 (Covers g2 along 2nd rank, defusing Qxg2 mate threat and freeing Nf3 from guard duty.) | Rc1 (Activates rook with direct pressure on c7, targeting the exposed Black king on c8.) | d5 (Offensive IQP lever …
- chess.js.legal_moves0ms
- llm.candidates12363ms · $0.0078
full reasoning
Candidates: Qe2 (Covers g2 along 2nd rank, defusing Qxg2 mate threat and freeing Nf3 from guard duty.) | Rc1 (Activates rook with direct pressure on c7, targeting the exposed Black king on c8.) | d5 (Offensive IQP lever opening d-file and c7 pressure simultaneously before Black's material advantage converts.)
7. Verify Alle 3 Kandidaten legal. cloud_eval disabled (default).
- chess.js.legal_recheck0ms
8. Reflect Final pick: Qe2 — Covers g2 along 2nd rank, defusing Qxg2 mate threat and freeing Nf3 from guard duty.. Rejected: a1c1, d4d5. [LLM note: Claude CLI subprocess timed out after 120000ms]
9. Commit Commit Qe2 (d1e2).
32...Rde8stockfish-1320
- 1. Observe— missing —
- 2. Recall Position— missing —
- 3. Recall Opponent— missing —
- 4. Research— missing —
- 5. Plan— missing —
- 6. Candidates— missing —
- 7. Verify— missing —
- 8. Reflect— missing —
9. Commit Engine stockfish-1320 (stockfish UCI_Elo 1320) pick: d8e8
- stockfish_uci1005ms
33.Ne5Sonnet
1. Observe Halbzug 33, Weiss am Zug. Phase: Mittelspiel. Schwarz +8 Punkte. Legale Zuege: 33. Criticality: 0.10.
- material-counter0ms
2. Recall Position recall_position disabled for this agent (tool_config.memory_recall=false).
3. Recall Opponent recall_opponent disabled for this agent (tool_config.memory_recall=false).
4. Research Web search (middlegame): The position is a classic IQP (Isolated Queen's Pawn) middlegame where White's d4 pawn grants dynamic activity but demands urgent, energetic play before pieces are exchanged. Black's queen on f4,…
- web_search.claude_cli77222ms · $0.0448
full reasoning
Web search (middlegame): The position is a classic IQP (Isolated Queen's Pawn) middlegame where White's d4 pawn grants dynamic activity but demands urgent, energetic play before pieces are exchanged. Black's queen on f4, combined with the powerful bishop on d6 angl…
5. Plan Phase: middlegame. Activate Ra1→d1 to reinforce d4 and contest Black's Re8 on the open e-file; route Nf3→e5 to seize the IQP's defining outpost; then execute d4-d5 central break to crack open lines toward Black's exposed…
- llm.plan55740ms · $0.0426
full reasoning
Phase: middlegame. Activate Ra1→d1 to reinforce d4 and contest Black's Re8 on the open e-file; route Nf3→e5 to seize the IQP's defining outpost; then execute d4-d5 central break to crack open lines toward Black's exposed c8-king before material deficit becomes decisive. According to the IQP research cited above, White's only compensation path is energetic piece activation — Ne5 outpost plus d4-d5 lever — to generate kingside and central threats before Black's +8 material advantage forces a losing endgame exchange-fest. Critical: Black's Qf4+Bd6 battery exerts real pressure along the g3-h2 diagonal; g2 needs monitoring; Black's Re8 dominates the open e-file and challenges the IQP's support base on d4; Nf6-g4 jump would dramatically intensify kingside pressure — Ne5 must preempt this; Any piece-trading sequence favors Black; White must avoid simplification at all costs.
6. Candidates Candidates: Ne5 (According to IQP research, Ne5 outpost has absolute priority before d5 break; preempts Ng4 jump and generates central pressure.) | Rd1 (Standard IQP plan per cited sources: rook behind isolated pawn rein…
- chess.js.legal_moves0ms
- llm.candidates98417ms · $0.0491
full reasoning
Candidates: Ne5 (According to IQP research, Ne5 outpost has absolute priority before d5 break; preempts Ng4 jump and generates central pressure.) | Rd1 (Standard IQP plan per cited sources: rook behind isolated pawn reinforces d4, contests open e-file against Black's Re8.) | d5 (Central lever to crack lines toward c8-king; works best after Ne5 is established but is the plan's key energetic break.)
7. Verify Alle 3 Kandidaten legal. cloud_eval disabled (default).
- chess.js.legal_recheck0ms
8. Reflect Final pick: Ne5 — According to pawnbreak.com, Ne5 outpost is the defining IQP attacking resource. Critically, Ne5 covers g4 — preventing Black's devastating Ng4 (attacks Qe2, opens Qxh2# threat) — while establishing the …
- llm.reflect98281ms · $0.0609
full reasoning
Final pick: Ne5 — According to pawnbreak.com, Ne5 outpost is the defining IQP attacking resource. Critically, Ne5 covers g4 — preventing Black's devastating Ng4 (attacks Qe2, opens Qxh2# threat) — while establishing the central powerbase for the d5 break.. Rejected: a1d1, d4d5.
9. Commit Commit Ne5 (f3e5).
34...Qxd4stockfish-1320
- 1. Observe— missing —
- 2. Recall Position— missing —
- 3. Recall Opponent— missing —
- 4. Research— missing —
- 5. Plan— missing —
- 6. Candidates— missing —
- 7. Verify— missing —
- 8. Reflect— missing —
9. Commit Engine stockfish-1320 (stockfish UCI_Elo 1320) pick: f4d4
- stockfish_uci1008ms
35.Re1Sonnet
1. Observe Halbzug 35, Weiss am Zug. Phase: Mittelspiel. Schwarz +9 Punkte. Legale Zuege: 36. Criticality: 0.20.
- material-counter0ms
2. Recall Position recall_position disabled for this agent (tool_config.memory_recall=false).
3. Recall Opponent recall_opponent disabled for this agent (tool_config.memory_recall=false).
4. Research Web search (middlegame): White's position is defined by the powerful knight outpost on e5 — a piece planted deep in Black's territory that cannot be challenged by pawns and simultaneously pressures Black's king on c8, re…
- web_search.claude_cli51262ms · $0.0236
full reasoning
Web search (middlegame): White's position is defined by the powerful knight outpost on e5 — a piece planted deep in Black's territory that cannot be challenged by pawns and simultaneously pressures Black's king on c8, restricts Black's pieces, and serves as a stabl…
5. Plan Phase: middlegame. Activate Ra1→e1 immediately to contest the e-file and create a queen-rook battery (Qe2+Re1) pressuring Black's Re8 and e6 pawn; maintain Ne5 as an untouchable anchor; threaten to penetrate Black's back…
- llm.plan88433ms · $0.0545
full reasoning
Phase: middlegame. Activate Ra1→e1 immediately to contest the e-file and create a queen-rook battery (Qe2+Re1) pressuring Black's Re8 and e6 pawn; maintain Ne5 as an untouchable anchor; threaten to penetrate Black's back rank or fork with Ne5→c6/d7 in 3–5 moves before Black consolidates the material advantage. Use the Ne5 outpost plus a queen-rook battery on the open e-file as full compensation for the material deficit, generating concrete mating or material-winning threats against Black's exposed king on c8 before Black's extra rook and bishop can coordinate for a simplified winning endgame. Critical: Black's Qd4 is dangerously active — threatens Qxf2+ if f2 loses cover and can infiltrate via d1 if Ra1 vacates; Black's Nf6 can leap to e4 or g4 to attack Qe2 and disrupt White's battery plan; Ne5 must not be traded or dislodged — losing the outpost collapses all of White's compensation; If Re1 is achieved, Black's Re8 is under immediate pressure; Black must react or face e-file penetration to e6/back rank; White's c2 pawn is a latent weakness — avoid lines where Black's queen can pick it up with tempo.
6. Candidates Candidates: Re1 (Directly executes the plan: contests e-file, builds Qe2+Re1 battery pressuring Re8 and e6.) | Nd7 (Knight leaps to d7, checking king on c8 and forking Re8; concrete threat before Black consolidates.) | N…
- chess.js.legal_moves0ms
- llm.candidates23222ms · $0.0155
full reasoning
Candidates: Re1 (Directly executes the plan: contests e-file, builds Qe2+Re1 battery pressuring Re8 and e6.) | Nd7 (Knight leaps to d7, checking king on c8 and forking Re8; concrete threat before Black consolidates.) | Nc6 (Checks king on c8 immediately, disrupting Black's coordination and threatening back-rank infiltration.)
7. Verify Alle 3 Kandidaten legal. cloud_eval disabled (default).
- chess.js.legal_recheck0ms
8. Reflect Final pick: Re1 — Directly executes the plan: contests e-file, builds Qe2+Re1 battery pressuring Re8 and e6.. Rejected: e5d7, e5c6. [LLM note: Claude CLI subprocess timed out after 120000ms]
9. Commit Commit Re1 (a1e1).
36...h5stockfish-1320
- 1. Observe— missing —
- 2. Recall Position— missing —
- 3. Recall Opponent— missing —
- 4. Research— missing —
- 5. Plan— missing —
- 6. Candidates— missing —
- 7. Verify— missing —
- 8. Reflect— missing —
9. Commit Engine stockfish-1320 (stockfish UCI_Elo 1320) pick: h6h5
- stockfish_uci1006ms
37.Nf7Sonnet
1. Observe Halbzug 37, Weiss am Zug. Phase: Mittelspiel. Schwarz +9 Punkte. Legale Zuege: 34. Criticality: 0.10.
- material-counter0ms
2. Recall Position recall_position disabled for this agent (tool_config.memory_recall=false).
3. Recall Opponent recall_opponent disabled for this agent (tool_config.memory_recall=false).
4. Research Web search (middlegame): White's knight on e5 is the dominant positional asset in this middlegame — it sits on an unassailable central outpost and constantly threatens Nd7, forking Black's queen on d4 and rook on e8. Bla…
- web_search.claude_cli63281ms · $0.0397
full reasoning
Web search (middlegame): White's knight on e5 is the dominant positional asset in this middlegame — it sits on an unassailable central outpost and constantly threatens Nd7, forking Black's queen on d4 and rook on e8. Black's king on c8 is uncastled and vulnerable a…
5. Plan Phase: middlegame. Keep Ne5 alive as Nd7-fork threat (forking Qd4 and Re8) to deny Black consolidation; press Qe2+Re1 battery against e6 and Black's second rank; consider f4 to open the f-file and add a second attacking …
- llm.plan26345ms · $0.0170
full reasoning
Phase: middlegame. Keep Ne5 alive as Nd7-fork threat (forking Qd4 and Re8) to deny Black consolidation; press Qe2+Re1 battery against e6 and Black's second rank; consider f4 to open the f-file and add a second attacking vector toward c8 before Black's rooks coordinate. Convert Ne5 domination and e-file battery into a decisive kingside or back-rank breakthrough against Black's exposed c8 king before Black's material surplus reaches a simplified endgame where rook coordination wins automatically. Critical: Nd7 fork (Ne5→d7) hangs every move — Black must keep Qd4 and Re8 both defended, limiting their activity; Black's Qd4 is active but overextended; any tempo against it while improving White swings initiative; f4 pawn break opens f-file and limits Nf6's defensive duties on e8; Black's Rh8 is dormant — if White generates threats fast, Black cannot bring it into play in time; Own weakness: a3 pawn isolated, but irrelevant while White's attacking chances persist.
6. Candidates Candidates: Nf7 (Forks bishop on d6 and rook on h8 simultaneously; Ne5 dominance converted into concrete material gain.) | Qe4 (Centralizes queen on e4, pressing e6 and maintaining e-file battery Re1+Qe4; Nf7 or Nd7 thre…
- chess.js.legal_moves0ms
- llm.candidates102621ms · $0.0869
full reasoning
Candidates: Nf7 (Forks bishop on d6 and rook on h8 simultaneously; Ne5 dominance converted into concrete material gain.) | Qe4 (Centralizes queen on e4, pressing e6 and maintaining e-file battery Re1+Qe4; Nf7 or Nd7 threats follow.) | Qxh5 (Wins h5 pawn while queen stays active; Black's kingside weakened and Ne5 domination preserved.)
7. Verify Alle 3 Kandidaten legal. cloud_eval disabled (default).
- chess.js.legal_recheck0ms
8. Reflect Final pick: Nf7 — Nf7 forks Bd6 and Rh8 simultaneously; Black cannot save both pieces, so White wins a full rook or bishop, converting Ne5 dominance into decisive material gain before Black's rooks coordinate.. Rejected:…
- llm.reflect45262ms · $0.0346
full reasoning
Final pick: Nf7 — Nf7 forks Bd6 and Rh8 simultaneously; Black cannot save both pieces, so White wins a full rook or bishop, converting Ne5 dominance into decisive material gain before Black's rooks coordinate.. Rejected: e2e4, e2h5.
9. Commit Commit Nf7 (e5f7).
38...Qa4stockfish-1320
- 1. Observe— missing —
- 2. Recall Position— missing —
- 3. Recall Opponent— missing —
- 4. Research— missing —
- 5. Plan— missing —
- 6. Candidates— missing —
- 7. Verify— missing —
- 8. Reflect— missing —
9. Commit Engine stockfish-1320 (stockfish UCI_Elo 1320) pick: d4a4
- stockfish_uci1004ms
39.Nxd6+Sonnet
1. Observe Halbzug 39, Weiss am Zug. Phase: Mittelspiel. Schwarz +9 Punkte. Legale Zuege: 35. Criticality: 0.20.
- material-counter0ms
2. Recall Position recall_position disabled for this agent (tool_config.memory_recall=false).
3. Recall Opponent recall_opponent disabled for this agent (tool_config.memory_recall=false).
4. Research Web search (middlegame): White's position is defined by the dominant knight on f7, an exceptional outpost that simultaneously attacks both black rooks on e8 and h8 — a classic 'family fork' setup. The open e-file with Wh…
- web_search.claude_cli67763ms · $0.0354
full reasoning
Web search (middlegame): White's position is defined by the dominant knight on f7, an exceptional outpost that simultaneously attacks both black rooks on e8 and h8 — a classic 'family fork' setup. The open e-file with White's rook already in place, combined with th…
5. Plan Phase: middlegame. Maintain Nf7 fork to force Black to surrender at least one rook; use Re1+Qe2 battery to press e6 and threaten back-rank intrusion; consider Qb5 targeting Qxb7 checkmate or Qc6+ to accelerate material c…
- llm.plan28760ms · $0.0183
full reasoning
Phase: middlegame. Maintain Nf7 fork to force Black to surrender at least one rook; use Re1+Qe2 battery to press e6 and threaten back-rank intrusion; consider Qb5 targeting Qxb7 checkmate or Qc6+ to accelerate material conversion before Black queen causes queenside damage via Qxa3 or Qa1+. Convert the Nf7 fork into a decisive rook gain, then exploit the resulting material-plus-activity advantage to deliver a mating attack against Black's exposed king on c8 before Black's queen coordinates with the surviving rook in a winning endgame. Critical: Black queen a4 threatens Qxa3, Qxc2, and back-rank checks — must monitor every move; Nf7 remains the strategic anchor — losing it without compensation collapses White's advantage; Black e6 pawn is a target along the e-file battery; Re8 pinned to king on c8; Immediate tactical opportunity: Qb5 threatens Qxb7# forcing Black into defensive crisis; Black's Nf6 and Bd6 are passive defenders — they cannot easily challenge Nf7 or contest e-file.
6. Candidates Candidates: Nxd6+ (Wins bishop with check; after Kd8, Nxe8 wins the pinned rook — decisive material chain per 'knight rampage' motif.) | Qxe6+ (Captures e6 pawn with check, forces king movement, keeps Nf7 fork intact to …
- chess.js.legal_moves0ms
- llm.candidates116755ms · $0.0773
full reasoning
Candidates: Nxd6+ (Wins bishop with check; after Kd8, Nxe8 wins the pinned rook — decisive material chain per 'knight rampage' motif.) | Qxe6+ (Captures e6 pawn with check, forces king movement, keeps Nf7 fork intact to harvest Rh8 next move.) | Qb5 (Threatens Qxb7+ against king on c8; recognized queen-vs-b7 pattern forces Black into immediate defensive crisis.)
7. Verify Alle 3 Kandidaten legal. cloud_eval disabled (default).
- chess.js.legal_recheck0ms
8. Reflect Final pick: Nxd6+ — Wins bishop with check; after Kd8, Nxe8 wins the pinned rook — decisive material chain per 'knight rampage' motif.. Rejected: e2e6, e2b5. [LLM note: Claude CLI subprocess timed out after 120000ms]
9. Commit Commit Nxd6+ (f7d6).
40...cxd6stockfish-1320
- 1. Observe— missing —
- 2. Recall Position— missing —
- 3. Recall Opponent— missing —
- 4. Research— missing —
- 5. Plan— missing —
- 6. Candidates— missing —
- 7. Verify— missing —
- 8. Reflect— missing —
9. Commit Engine stockfish-1320 (stockfish UCI_Elo 1320) pick: c7d6
- stockfish_uci1006ms
41.Qb5Sonnet
1. Observe Halbzug 41, Weiss am Zug. Phase: Endspiel. Schwarz +9 Punkte. Legale Zuege: 29. Criticality: 0.10.
- material-counter0ms
2. Recall Position recall_position disabled for this agent (tool_config.memory_recall=false).
3. Recall Opponent recall_opponent disabled for this agent (tool_config.memory_recall=false).
4. Research Web search (endgame): This is a complex middlegame-endgame transition where Black holds a material initiative thanks to the queen on a4 (pressuring White's isolated a3 pawn) and two rooks that can dominate the open e-fil…
- web_search.claude_cli59977ms · $0.0325
full reasoning
Web search (endgame): This is a complex middlegame-endgame transition where Black holds a material initiative thanks to the queen on a4 (pressuring White's isolated a3 pawn) and two rooks that can dominate the open e-file. White's single rook on e1 must anchor t…
5. Plan Phase: endgame. Swing queen aggressively to the queenside to target Black's exposed king on c8, generating immediate back-rank mating threats; the key tactical motif is queen to the b5-square threatening Qc6+ followed by…
- llm.plan91871ms · $0.0691
full reasoning
Phase: endgame. Swing queen aggressively to the queenside to target Black's exposed king on c8, generating immediate back-rank mating threats; the key tactical motif is queen to the b5-square threatening Qc6+ followed by Qa8-mate, so that if Black grabs the c2-pawn with the queen, the king is left fatally undefended; force Black to react defensively before rooks can consolidate. Down approximately nine material points, White's sole realistic aim is perpetual check: according to the web research, 'the side with the queen holds by creating counterattacking threats faster than the rooks can coordinate' — White must keep the queen in constant harassment mode along the c8-b8-a8 corridor while anchoring the rook on e1 to deny Black a dominating e-file entry. Critical: Black queen on a4 immediately threatens to harvest both queenside pawns (a3 and c2), deepening the material deficit if White plays passively; Black's two rooks will decisively dominate the open e-file and threaten back-rank collapse if White's rook ever vacates e1; White's only trump is the undefended Black king on c8 — the back-rank mating threat (queen infiltrating via c6 then a8) must be kept alive every move to prevent Black from calmly converting the material advantage.
6. Candidates Candidates: Qb5 (Directly executes stated plan: Qb5 threatens Qc6+ then Qa8-mate, forcing Black to defend rather than harvest pawns.) | Qxe6+ (Grabs pawn with check; king forced to move, maintaining queen harassment alon…
- chess.js.legal_moves0ms
- llm.candidates26512ms · $0.0190
full reasoning
Candidates: Qb5 (Directly executes stated plan: Qb5 threatens Qc6+ then Qa8-mate, forcing Black to defend rather than harvest pawns.) | Qxe6+ (Grabs pawn with check; king forced to move, maintaining queen harassment along back rank before Black's rooks coordinate.) | Qa6 (Infiltrates queenside corridor immediately, threatening Qa8+ and pinning b7-pawn, supporting the c8-b8-a8 perpetual-check plan.)
7. Verify Alle 3 Kandidaten legal. cloud_eval disabled (default).
- chess.js.legal_recheck0ms
8. Reflect Final pick: Qb5 — Directly executes stated plan: Qb5 threatens Qc6+ then Qa8-mate, forcing Black to defend rather than harvest pawns.. Rejected: e2e6, e2a6. [LLM note: Claude CLI subprocess timed out after 120000ms]
9. Commit Commit Qb5 (e2b5).
42...Qxb5stockfish-1320
- 1. Observe— missing —
- 2. Recall Position— missing —
- 3. Recall Opponent— missing —
- 4. Research— missing —
- 5. Plan— missing —
- 6. Candidates— missing —
- 7. Verify— missing —
- 8. Reflect— missing —
9. Commit Engine stockfish-1320 (stockfish UCI_Elo 1320) pick: a4b5
- stockfish_uci1004ms
43.Re3Sonnet
1. Observe Halbzug 43, Weiss am Zug. Phase: Endspiel. Schwarz +18 Punkte. Legale Zuege: 20. Criticality: 0.10.
- material-counter0ms
2. Recall Position recall_position disabled for this agent (tool_config.memory_recall=false).
3. Recall Opponent recall_opponent disabled for this agent (tool_config.memory_recall=false).
4. Research Web search (endgame): White faces a severe material deficit — a lone rook and kingside pawns against Black's queen, two rooks, and knight. The single realistic strategic goal is to build a defensive fortress: keep the ro…
- web_search.claude_cli54256ms · $0.0290
full reasoning
Web search (endgame): White faces a severe material deficit — a lone rook and kingside pawns against Black's queen, two rooks, and knight. The single realistic strategic goal is to build a defensive fortress: keep the rook active on the e-file to contest Black's…
5. Plan Phase: endgame. Deploy the third-rank defense: Re1-e3 to cut Black's queen and rooks off the critical third rank, preventing immediate penetration; simultaneously advance the a-pawn (a3-a4) to force Black to split attent…
- llm.plan64919ms · $0.0384
full reasoning
Phase: endgame. Deploy the third-rank defense: Re1-e3 to cut Black's queen and rooks off the critical third rank, preventing immediate penetration; simultaneously advance the a-pawn (a3-a4) to force Black to split attention between attacking and stopping queenside counterplay; keep the king passively sheltered behind the f2-g2-h2 pawn wall. Survive to a drawn fortress by anchoring the rook on the third rank (e3) — the technique identified by Chess.com as the most difficult defensive setup for the attacking side to crack — while the intact kingside pawn wall and a potential a-pawn march provide the only practical drawing chances. Critical: Re8 directly contests the e-file against White's Re1 — losing the file opens back-rank penetration; Qb5 can swing to b1 threatening mate or to d3 attacking c2; Nf6 threatens Ne4 or Ng4 to turbocharge the kingside attack; c2-pawn is an open target if the e-file falls — must be covered or advanced.
6. Candidates Candidates: Re3 (Core plan: anchor rook on third rank, blocking queen/rooks from penetrating; Chess.com-identified hardest fortress to crack.) | a4 (Plan's queenside counterplay: forces Black to split attention between k…
- chess.js.legal_moves0ms
- llm.candidates13431ms · $0.0074
full reasoning
Candidates: Re3 (Core plan: anchor rook on third rank, blocking queen/rooks from penetrating; Chess.com-identified hardest fortress to crack.) | a4 (Plan's queenside counterplay: forces Black to split attention between kingside attack and stopping the a-pawn march.) | Kh1 (Shelters king deeper behind pawn wall, avoids back-rank mate threats after Qb5-b1 swing identified in plan notes.)
7. Verify Alle 3 Kandidaten legal. cloud_eval disabled (default).
- chess.js.legal_recheck0ms
8. Reflect Final pick: Re3 — Core plan: anchor rook on third rank, blocking queen/rooks from penetrating; Chess.com-identified hardest fortress to crack.. Rejected: a3a4, g1h1. [LLM note: Claude CLI subprocess timed out after 12000…
full reasoning
Final pick: Re3 — Core plan: anchor rook on third rank, blocking queen/rooks from penetrating; Chess.com-identified hardest fortress to crack.. Rejected: a3a4, g1h1. [LLM note: Claude CLI subprocess timed out after 120000ms]
9. Commit Commit Re3 (e1e3).
44...Qb1+stockfish-1320
- 1. Observe— missing —
- 2. Recall Position— missing —
- 3. Recall Opponent— missing —
- 4. Research— missing —
- 5. Plan— missing —
- 6. Candidates— missing —
- 7. Verify— missing —
- 8. Reflect— missing —
9. Commit Engine stockfish-1320 (stockfish UCI_Elo 1320) pick: b5b1
- stockfish_uci1004ms
45.Re1Sonnet
1. Observe Halbzug 45, Weiss am Zug. Phase: Endspiel. Schwarz +18 Punkte. Legale Zuege: 1. Schach! Criticality: 0.55.
- material-counter0ms
2. Recall Position recall_position disabled for this agent (tool_config.memory_recall=false).
3. Recall Opponent recall_opponent disabled for this agent (tool_config.memory_recall=false).
4. Research Web search (endgame): In this endgame White faces a severe material deficit — a lone rook and pawns against Black's queen, two rooks, and knight. The only realistic goal is to fight for a draw through precise defensive t…
- web_search.claude_cli49212ms · $0.0259
full reasoning
Web search (endgame): In this endgame White faces a severe material deficit — a lone rook and pawns against Black's queen, two rooks, and knight. The only realistic goal is to fight for a draw through precise defensive technique. The two main drawing resources a…
5. Plan Phase: endgame. Halbzug 45, Weiss am Zug. Phase: Endspiel. Schwarz +18 Punkte. Legale Zuege: 1. Schach! Criticality: 0.55. No memory context available. Plan: activate the king, create passed pawns, defend prophylacticall…
full reasoning
Phase: endgame. Halbzug 45, Weiss am Zug. Phase: Endspiel. Schwarz +18 Punkte. Legale Zuege: 1. Schach! Criticality: 0.55. No memory context available. Plan: activate the king, create passed pawns, defend prophylactically. [LLM-Error: Claude CLI subprocess timed out after 120000ms]
6. Candidates Candidates: Re1 (Only legal move; attacks Qb1, forcing queen away and activating rook on open file.)
- chess.js.legal_moves0ms
- llm.candidates9459ms · $0.0013
7. Verify Alle 1 Kandidaten legal. cloud_eval disabled (default).
- chess.js.legal_recheck0ms
8. Reflect Final pick: Re1 — Only legal move; attacks Qb1, forcing queen away and activating rook on open file.. Rejected: —.
9. Commit Commit Re1 (e3e1).
46...Qxe1#stockfish-1320
- 1. Observe— missing —
- 2. Recall Position— missing —
- 3. Recall Opponent— missing —
- 4. Research— missing —
- 5. Plan— missing —
- 6. Candidates— missing —
- 7. Verify— missing —
- 8. Reflect— missing —
9. Commit Engine stockfish-1320 (stockfish UCI_Elo 1320) pick: b1e1
- stockfish_uci1007ms
PGN
PGN anzeigen
[Event "Calibration chess-sonnet-control vs stockfish-1320"] [Site "?"] [Date "2026-05-29"] [Round "?"] [White "chess-sonnet-control"] [Black "stockfish-1320"] [Result "*"] 1. e4 d5 2. exd5 e6 3. dxe6 Bxe6 4. Bb5+ Nc6 5. Nf3 Nf6 6. O-O Bd6 7. Re1 h6 8. d4 Qd7 9. Rxe6+ fxe6 10. Nbd2 O-O-O 11. Bxc6 Qxc6 12. b4 Bxb4 13. a3 Bd6 14. Ne4 Qxe4 15. Bf4 Qxf4 16. Qe2 Rde8 17. Ne5 Qxd4 18. Re1 h5 19. Nf7 Qa4 20. Nxd6+ cxd6 21. Qb5 Qxb5 22. Re3 Qb1+ 23. Re1 Qxe1# *