Reasoning eval · Puzzle 5MPMl

3 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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SolutionPlayed (same)White to move
Rating
1191(1200 band)
Solution
e4f6 g7f6 d3f5
Motifs
crushingdiscoveredAttackkingsideAttackmiddlegameshort
FEN
r4rk1/1bq2ppp/p4n2/2p1pn2/1p2N3/3BQ2N/PPP2PPP/2RR2K1 w - - 2 20
SolvedPlayed e4f6(−15cp)Claims true 60%3866 out · $0.0394 · 50.4s

Stated plan

Play Nxf6+ to force open Black's king position with check while gaining time to save the queen from the f5-knight's attack.

Resolves to e4f6 · −15cp

Reasoning

Black's knight on f5 attacks the queen on e3, so White must act with tempo. Ne4xf6+ forces an immediate response (gxf6, Kh8, or Rxf6) since it's check, trading knights on equal terms while shattering Black's kingside pawn cover (if gxf6) or leaving Black's position awkward, and importantly it gains a tempo so that after Black deals with the check White can safely reposition the queen away from the f5-knight's attack. This is clearly the most forcing and useful move, opening lines toward the black king for a strong follow-up attack (e.g., Qg3+).

Claims extracted from it

3 true · 2 false · 3 unverifiable

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

  • True

    Black's knight on f5 attacks the queen on e3

    attackedsquare=e3by=black

  • False

    Ne4xf6+ forces an immediate response

    lineprefix=playedmoves=Nxf6+assertion=type:forced_reply

  • False

    After Nxf6+, Black's options are gxf6, Kh8, or Rxf6

    lineprefix=playedmoves=Nxf6+assertion=type:forced_reply

  • True

    Nxf6+ trades knights on equal terms

    lineprefix=playedmoves=Nxf6+assertion=type:captures_piece piece:knight

  • Unverifiable

    If gxf6, White's move shatters Black's kingside pawn cover

    lineprefix=playedmoves=Nxf6+ gxf6assertion=type:unverifiable

  • Unverifiable

    Nxf6+ gains a tempo so that after Black deals with the check White can safely reposition the queen away from the f5-knight's attack

    lineprefix=playedmoves=Nxf6+assertion=type:unverifiable

  • Unverifiable

    Nxf6+ opens lines toward the black king for a strong follow-up attack

    lineprefix=playedmoves=Nxf6+assertion=type:unverifiable

  • True

    Nxf6 is clearly the most forcing and useful move

    best_movemove=Nxf6+