Reasoning eval · Puzzle 4fvi4

0 of 3 models found the move, and said 6 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
1692(1600 band)
Solution
c2d2 e2d2 d6b4
Motifs
advantagemiddlegamepinsacrificeshort
FEN
1n3Nk1/3p2pp/p2b1n2/qp6/5P2/5BP1/PPrBQ2P/R3K2R b KQ - 0 20
MissedPlayed a5d2(−1389cp)Claims true 50%1197 out · $0.0127 · 13.9s

Stated plan

Sacrifice the queen on d2 with check to win material after the forced recapture sequence.

Reasoning

Black's queen can capture the d2 bishop with check via a5-d2 diagonal, since d2 is also defended by the rook on c2. White cannot capture with the king (rook defends d2), so must recapture with Qe2xd2, allowing Rc2xd2 to win the queen back, netting a full piece.

Claims extracted from it

2 true · 2 false · 0 unverifiable

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

  • True

    Black's queen can capture the d2 bishop with check via the a5-d2 diagonal

    linemoves=Qxd2+assertion=type:gives_check

  • True

    d2 is defended by the rook on c2

    defendedsquare=d2by=c2

  • False

    White cannot capture with the king because the rook defends d2

    lineprefix=playedmoves=Qxd2+assertion=type:forced_reply pattern:queen

  • False

    After Qxd2+ Qe2xd2 Rc2xd2, Black wins a full piece

    lineprefix=playedmoves=Qxd2+ Qxd2 Rxd2assertion=type:material_delta side:black min_value:3