Reasoning eval · Puzzle V3IuB

1 of 3 models found the move, and said 9 false things along the way

Green is the solution, red is what the model played when it differed. Each claim below was pulled out of the prose beside it and checked against this exact position.

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SolutionPlayedBlack to move
Rating
1559(1600 band)
Solution
c4c2 b3c2 c8c2 d2c2 d7a4
Motifs
advantageattractionexposedKinglongmiddlegame
FEN
2r3k1/3q2pp/p3pp2/3p4/RPrP1P2/1Q3P2/3K2PP/3N3R b - - 6 31
MissedPlayed c4d4(−702cp)Claims true 50%4933 out · $0.0500 · 58.2s

Stated plan

Play Rxd4+, winning a pawn with check and forcing the king into a dangerously exposed square since White cannot recapture or block.

Resolves to c4d4 · −702cp

Reasoning

The rook on c4 can capture the d4 pawn with check along the d-file: Rxd4+. Critically, White's own pawn on b4 blocks the a4-rook from recapturing along the rank, and no piece can interpose on d3 (the knight on d1 can't reach it, the rook on h1 is too far, and the queen on b3 cannot move to d3 in one move). Meanwhile the black rook on c8 controls the entire c-file, cutting off c1, c2, c3 as king retreats. This forces the king to e1, e2, or e3, walking into a much more exposed position while Black has won a pawn and keeps a crushing attack with queen, rook, and rook all active against an exposed king.

Claims extracted from it

2 true · 2 false · 6 unverifiable

Hover a claim to light up the squares it is about.

  • True

    The rook on c4 can capture the d4 pawn with check along the d-file: Rxd4+

    linemoves=Rxd4+assertion=type:gives_check

  • Unverifiable

    White's pawn on b4 blocks the a4-rook from recapturing along the rank

    unverifiable

  • Unverifiable

    The knight on d1 cannot reach d3

    unverifiable

  • Unverifiable

    The rook on h1 is too far to interpose on d3

    unverifiable

  • Unverifiable

    The queen on b3 cannot move to d3 in one move

    unverifiable

  • True

    The black rook on c8 controls the entire c-file

    controls_squaresquare=c1by=black

  • Unverifiable

    The rook on c8 cuts off c1, c2, c3 as king retreats

    unverifiable

  • False

    After Rxd4+ the king must move to e1, e2, or e3

    lineprefix=playedmoves=Rxd4+assertion=type:forced_reply pattern:king

  • False

    Black has won a pawn after Rxd4+

    lineprefix=playedmoves=Rxd4+assertion=type:material_delta side:black min_value:1

  • Unverifiable

    Black keeps a crushing attack with queen, rook, and rook all active against an exposed king

    unverifiable