Reasoning eval · Puzzle hTdN0

1 of 3 models found the move, and said 10 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
1143(1200 band)
Solution
g3e1 d2c1 e3c3
Motifs
crushingendgamemastershort
FEN
5k2/p4p2/4pQ2/P7/5p2/1P2r1bq/3K2R1/6R1 b - - 6 42
MissedPlayed h3g2(−1682cp)Claims true 50%2244 out · $0.0231 · 31.8s

Stated plan

Sacrifice-capture with Qxg2+ to force the king into a mating net completed by Re1+.

Resolves to h3g2 · −1682cp

Reasoning

Qxg2+ captures the rook and gives check along the second rank, since g2 and d2 share rank 2. The king is forced to d1 or c1 (all other squares are covered by the queen on rank 2, the rook on e3's rank 3, or the bishop on g3 hitting e1). Then Re3-e1+ delivers checkmate, since the king cannot capture the rook (e1 is defended by the bishop on g3) and every escape square is controlled by the queen or rook.

Claims extracted from it

2 true · 2 false · 1 unverifiable

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

  • True

    Qxg2+ captures the rook and gives check

    linemoves=Qxg2+assertion=type:captures_piece piece:rook

  • True

    Qxg2+ gives check along the second rank

    linemoves=Qxg2+assertion=type:gives_check

  • False

    The king is forced to d1 or c1

    lineprefix=playedmoves=Qxg2+assertion=type:forced_reply

  • False

    Re3-e1+ delivers checkmate

    lineprefix=playedmoves=Qxg2+ Kd1/Kc1 Re1+assertion=type:is_mate

  • Unverifiable

    e1 is defended by the bishop on g3

    defendedsquare=e1by=g3