Reasoning eval · Puzzle s7Hec

2 of 3 models found the move, and said 5 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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SolutionPlayed (same)Black to move
Rating
1173(1200 band)
Solution
b4a5 d4c5 a5a4
Motifs
crushingdefensiveMoveendgamemasterpawnEndgameshort
FEN
8/6p1/p3p2p/P7/1k1K1P2/6PP/8/8 b - - 2 37
SolvedPlayed b4a5(−0cp)Claims true 100%461 out · $0.0053 · 6.7s

Stated plan

Capture the a5 pawn with the king to remove White's outside passer.

Reasoning

Black's king can capture the undefended white a5-pawn, since it's not adjacent to the white king and eliminates White's outside passed pawn, which is the key long-term threat.

Claims extracted from it

2 true · 0 false · 0 unverifiable

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

  • True

    the white a5-pawn is undefended

    defendedsquare=a5by=whitenegated=true

  • True

    Black's king can capture the a5-pawn since it's not adjacent to the white king

    linemoves=Kxa5assertion=type:captures_piece piece:pawn