Reasoning eval · Puzzle SXrHg

1 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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SolutionPlayedWhite to move
Rating
1266(1200 band)
Solution
h6h7 g8h8 f1f8
Motifs
advancedPawndeflectionkingsideAttackmatemateIn2middlegameshort
FEN
r1b2rk1/6p1/p1p1p1PP/3p4/8/2N5/PPPqB3/RK3R2 w - - 0 25
MissedPlayed f1f8(lost a forced mate)Claims true 50%6535 out · $0.0660 · 83.0s

Stated plan

Sacrifice the rook to drag the king onto f8 and blow open the kingside pawns for a decisive mating attack.

Reasoning

White has no queen but a powerful pawn duo on g6/h6 aimed at the black king, while black's queen on d2 has strayed deep with no real threats (Qxe2 fails to Nxe2, Qc1+ fails to Rxc1). The rook on f8 is the last real defender near the king. Removing it with a check forces the king into the open, after which hxg7+ rips open the kingside completely, giving White a winning mating attack that outweighs the missing queen. Rxf8+ is essentially forced-response inducing, and after Kxf8 hxg7+ the black king is dragged into a fatal exposure.

Claims extracted from it

2 true · 2 false · 5 unverifiable

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

  • Unverifiable

    White has a powerful pawn duo on g6/h6 aimed at the black king

    unverifiable

  • Unverifiable

    Black's queen on d2 has strayed deep with no real threats

    unverifiable

  • False

    Qxe2 fails to Nxe2

    linemoves=Qxe2 Nxe2assertion=type:forced_reply

  • False

    Qc1+ fails to Rxc1

    linemoves=Qc1+ Rxc1assertion=type:forced_reply

  • Unverifiable

    The rook on f8 is the last real defender near the king

    unverifiable

  • Unverifiable

    Removing the rook with a check forces the king into the open

    unverifiable

  • True

    After Rxf8+ Kxf8 hxg7+ the black king is dragged into a fatal exposure

    lineprefix=playedmoves=Rxf8+ Kxf8 hxg7+assertion=type:gives_check

  • Unverifiable

    White has a winning mating attack

    unverifiable

  • True

    Rxf8+ is essentially forced-response inducing

    linemoves=Rxf8+assertion=type:forced_reply