Reasoning eval · Puzzle 2B2I1

3 of 3 models found the move, and said 13 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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h8
g
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a
SolutionPlayed (same)Black to move
Rating
2028(2000 band)
Solution
f2d3 e5d6 d3f4 g5h6 g7h6
Motifs
crushingdeflectionendgameknightEndgamelongmaster
FEN
8/5kp1/1N2p2p/3pK1PP/3P1P2/8/5n2/8 b - - 0 55
SolvedPlayed f2d3(−0cp)Claims true 17%883 out · $0.0095 · 13.3s

Stated plan

Play Nd3+ to start a knight fork sequence that wins the white knight on b6.

Resolves to f2d3 · −0cp

Reasoning

Black's knight can jump into d3 with check, forcing the white king to move (likely to e4, attacking the knight). But then the knight jumps to c5 with another check, simultaneously attacking the white knight on b6, winning material after the king moves away.

Claims extracted from it

1 true · 5 false · 0 unverifiable

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

  • True

    Black's knight can jump into d3 with check

    linemoves=Nd3+assertion=type:gives_check

  • False

    After Nd3+, the white king is forced to move, likely to e4

    lineprefix=playedmoves=Nd3+ Ke4assertion=type:forced_reply

  • False

    After Ke4, the white king attacking the knight

    lineprefix=playedmoves=Nd3+ Ke4assertion=type:attacked square:d3 by:white

  • False

    After Ke4, the knight jumps to c5 with another check

    lineprefix=playedmoves=Nd3+ Ke4 Nc5+assertion=type:gives_check

  • False

    After Nc5+, the knight simultaneously attacks the white knight on b6

    lineprefix=playedmoves=Nd3+ Ke4 Nc5+assertion=type:attacked square:b6 by:black

  • False

    After Nc5+, the knight wins material when the king moves away

    lineprefix=playedmoves=Nd3+ Ke4 Nc5+assertion=type:captures_piece piece:knight