Reasoning eval · Puzzle dbUkh

2 of 3 models found the move, and said 9 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
2030(2000 band)
Solution
f4d3 e1e3 d3e5 c4e5 b8e5
Motifs
advantagelongmiddlegame
FEN
1b3rk1/1Q3ppp/1p2p3/4B2q/1PN2n2/P4PP1/5P1P/4R2K b - - 4 27
SolvedPlayed f4d3(−0cp)Claims true 67%1899 out · $0.0197 · 24.4s

Stated plan

Play Nd3, forking the rook on e1 and bishop on e5 to win material.

Resolves to f4d3 · −0cp

Reasoning

The bishop on b8 is attacked by Qb7, but Black has a stronger tactical resource: Nf4-d3 forks the rook on e1 and the bishop on e5, and the knight lands on a square not attacked by any white piece. Whatever White does (save the rook, save the bishop, or grab the bishop on b8), Black wins material with the fork, e.g. after Qxb8 Nxe1 winning the rook for a bishop.

Claims extracted from it

2 true · 1 false · 1 unverifiable

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

  • True

    The bishop on b8 is attacked by Qb7

    attackedsquare=b8by=white

  • Unverifiable

    Nf4-d3 forks the rook on e1 and the bishop on e5

    unverifiable

  • True

    The knight lands on d3, a square not attacked by any white piece

    attackedsquare=d3by=whitenegated=true

  • False

    After Qxb8 Nxe1, Black wins the rook for a bishop

    lineprefix=playedmoves=Qxb8 Nxe1assertion=type:material_delta side:black min_value:2