Reasoning eval · Puzzle ngWvr

1 of 3 models found the move, and said 12 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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a
SolutionPlayedBlack to move
Rating
1201(1200 band)
Solution
d2d1 a1d1 d8d1
Motifs
matemateIn2middlegameshort
FEN
1k1r4/ppp2pp1/8/4PQ1p/8/1PP1q3/PB1r1RPP/R4K2 b - - 1 22
MissedPlayed d2b2(lost a forced mate)Claims true 33%1430 out · $0.0150 · 18.8s

Stated plan

Win the undefended bishop on b2 with the rook.

Reasoning

Black's rook on d2 lies on the second rank alongside White's bishop on b2, which is undefended (Ra1 only guards a2). Capturing it wins a piece outright; even if White trades rooks on b2, Black recaptures with the queen and comes out a clear piece ahead with no counterplay against the black king.

Claims extracted from it

1 true · 2 false · 0 unverifiable

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

  • True

    White's bishop on b2 is undefended

    defendedsquare=b2negated=true

  • False

    If Black captures the bishop on b2 with the rook, Black wins a piece

    lineprefix=playedmoves=Rxb2assertion=type:captures_piece piece:bishop

  • False

    After Rxb2 Rxb2 Qxb2, Black comes out a clear piece ahead

    lineprefix=playedmoves=Rxb2 Rxb2 Qxb2assertion=type:material_delta side:black min_value:3