Reasoning eval · Puzzle 0jC1E

0 of 3 models found the move, and said 7 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
1229(1200 band)
Solution
e7g7 g1f1 h4h1
Motifs
endgamematemateIn2queenRookEndgameshort
FEN
8/pp2r3/2p4p/7P/P1QPPP1r/5k2/5P2/6K1 b - - 2 42
MissedPlayed h4h1(lost a forced mate)Claims true 80%2458 out · $0.0266 · 31.9s

Stated plan

Deliver checkmate with Rh1+.

Resolves to h4h1 · lost a forced mate

Reasoning

Rh1+ delivers check along the first rank. The king cannot go to f1 (still on rank 1, attacked by rook), cannot go to g2 (adjacent to black king on f3), and f2 is occupied by own pawn. No piece can block or capture the rook. This is checkmate.

Claims extracted from it

4 true · 1 false · 0 unverifiable

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

  • True

    Rh1+ delivers check

    linemoves=Rh1+assertion=type:gives_check

  • True

    The king cannot go to f1

    lineprefix=playedmoves=Rh1+assertion=type:king_cannot_go square:f1 side:white

  • True

    The king cannot go to g2 (adjacent to black king on f3)

    lineprefix=playedmoves=Rh1+assertion=type:king_cannot_go square:g2 side:white

  • True

    f2 is occupied by own pawn

    piece_on_squaresquare=f2piece=pawnby=white

  • False

    After Rh1+ no piece can block or capture the rook, this is checkmate

    linemoves=Rh1+assertion=type:is_mate