Reasoning eval · Puzzle obf5U

0 of 3 models found the move, and said 4 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
2336(2400 band)
Solution
c2e2 b7a8 g8h7 a8e4 e2e4
Motifs
crushingdefensiveMoveendgamelongpin
FEN
6k1/1Q3bp1/p4p1p/8/1BP5/1P6/P1q3PP/3rR2K b - - 0 31
MissedPlayed d1e1(−699cp)Claims true 67%426 out · $0.0049 · 6.2s

Stated plan

Deliver mate by capturing on e1 with the rook.

Reasoning

Rxe1 captures the rook and delivers check along the first rank; king on h1 cannot escape since e1 rook covers f1, g1, h1, and nothing can block or capture on e1. This is checkmate.

Claims extracted from it

2 true · 1 false · 2 unverifiable

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

  • True

    Rxe1 captures the rook

    linemoves=Rxe1assertion=type:captures_piece piece:rook

  • True

    Rxe1 delivers check along the first rank

    linemoves=Rxe1assertion=type:gives_check

  • Unverifiable

    The king on h1 cannot escape since the rook on e1 covers f1, g1, h1

  • Unverifiable

    Nothing can block or capture on e1

    unverifiable

  • False

    Rxe1 is checkmate

    linemoves=Rxe1assertion=type:is_mate