Reasoning eval · Puzzle XJNlY

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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a
SolutionPlayedBlack to move
Rating
2053(2000 band)
Solution
f3h1 f1e2 h1c1
Motifs
crushingendgamemastershortskewer
FEN
8/5p2/4p3/p3P1k1/r2B2p1/3QPqPp/5P1P/2R2K2 b - - 3 38
MissedPlayed f3g2(−832cp)Claims true 67%20468 out · $0.2054 · 244.1s

Stated plan

Play the safe check Qg2+, exploiting the h3 pawn's protection to force the king into a worse square and continue the attack.

Resolves to f3g2 · −832cp

Reasoning

Black's queen on f3 is deep in White's camp. Direct checks like Qe2+ or Qxf2+ fail to Kxe2/Kxf2 since the queen would be undefended there. However, Qg2+ is different: the black pawn on h3 defends g2, so the White king cannot capture the queen. The king is forced to move (e1 or e2), since g1 is also covered by the queen and f2 is blocked by White's own pawn. This gives Black a powerful, safe check that seizes the initiative and keeps the attack going with tempo, which is clearly the strongest try in this position.

Claims extracted from it

6 true · 3 false · 0 unverifiable

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

  • True

    Black's queen on f3 is deep in White's camp

    piece_on_squaresquare=f3piece=queenby=black

  • True

    Qe2+ fails to Kxe2 since the queen would be undefended

    linemoves=Qe2+ Kxe2assertion=type:captures_piece piece:queen

  • True

    Qxf2+ fails to Kxf2 since the queen would be undefended

    linemoves=Qxf2+ Kxf2assertion=type:captures_piece piece:queen

  • True

    The black pawn on h3 defends g2

    defendedsquare=g2by=black

  • False

    The White king cannot capture on g2

    attackedsquare=g2by=whitenegated=true

  • True

    After Qg2+, the king is forced to move to e1 or e2

    linemoves=Qg2+assertion=type:forced_reply pattern:king

  • False

    g1 is covered by the queen

    controls_squaresquare=g1by=black

  • True

    f2 is blocked by White's own pawn

    piece_on_squaresquare=f2piece=pawnby=white

  • False

    Qg2+ is clearly the strongest try in this position

    best_movemove=Qg2+