Reasoning eval · Puzzle 09ol7

1 of 3 models found the move, and said 8 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)Black to move
Rating
1688(1600 band)
Solution
e6e5 d4e4 c7c5
Motifs
advantageendgamemastermasterVsMastershort
FEN
6k1/1bq2p1p/p3p1p1/1pNn4/3Q4/P3P2P/1P3PP1/1B4K1 b - - 4 29
SolvedPlayed e6e5(−0cp)Claims true 64%10977 out · $0.1105 · 128.8s

Stated plan

Push e6-e5 to attack the white queen with tempo while keeping the knight on d5 safely defended by the bishop.

Resolves to e6e5 · −0cp

Reasoning

The white queen on d4 attacks the knight on d5, but the knight is actually defended twice (by the e6 pawn and by the bishop on b7 via the long diagonal b7-c6-d5). This means Black can safely push e6-e5, gaining a tempo by attacking the queen directly while the knight remains adequately protected. If White tries Qxd5, Bxd5 wins the queen for a knight. Otherwise White must retreat the queen, and Black improves the position with initiative. Other tactical tries (Nxe3, Nb4, Nc3, Nf4) all lose material to simple pawn recaptures, and Qxc5 loses the queen for a knight since the knight is defended by the queen on d4. Thus e5 is the strongest, safe, forcing move.

Claims extracted from it

7 true · 4 false · 1 unverifiable

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

  • True

    The white queen on d4 attacks the knight on d5

    attackedsquare=d5by=white

  • True

    The knight on d5 is defended by the e6 pawn

    defendedsquare=d5by=black

  • True

    The knight on d5 is defended by the bishop on b7

    defendedsquare=d5by=black

  • False

    Black can safely push e6-e5, gaining a tempo by attacking the queen directly

    linemoves=e5assertion=type:gives_check

  • True

    If White plays Qxd5, Bxd5 wins the queen for a knight

    lineprefix=playedmoves=Qxd5 Bxd5assertion=type:captures_piece piece:queen

  • Unverifiable

    If White does not take on d5, White must retreat the queen

    unverifiable

  • True

    Nxe3 loses material to simple pawn recaptures

    linemoves=Nxe3assertion=type:material_delta side:black min_value:1

  • False

    Nb4 loses material to simple pawn recaptures

    linemoves=Nb4assertion=type:material_delta side:black min_value:1

  • False

    Nc3 loses material to simple pawn recaptures

    linemoves=Nc3assertion=type:material_delta side:black min_value:1

  • False

    Nf4 loses material to simple pawn recaptures

    linemoves=Nf4assertion=type:material_delta side:black min_value:1

  • True

    Qxc5 loses the queen for a knight since the knight is defended by the queen on d4

    linemoves=Qxc5assertion=type:material_delta side:black min_value:3

  • True

    e5 is the strongest move

    best_movemove=e5