Reasoning eval · Puzzle 90Vvx

1 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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SolutionPlayedBlack to move
Rating
1911(2000 band)
Solution
f2f1 e2f1 e8e1
Motifs
endgamematemateIn2short
FEN
4r2k/p5pp/2P5/8/P6P/1R3n2/2P1Br2/3K1R2 b - - 4 26
MissedPlayed e8e2(lost a forced mate)Claims true 50%3535 out · $0.0360 · 42.5s

Stated plan

Win the bishop and follow-up rook through the double attack on e2.

Reasoning

The bishop on e2 is attacked twice (by Re8 and Rf2) but defended only once (by Rf1). By playing Re8xe2, White must recapture with Rf1xe2, and then Rf2xe2 wins that rook too, netting bishop and rook for a single rook - a clear material win.

Claims extracted from it

2 true · 2 false · 0 unverifiable

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

  • True

    The bishop on e2 is attacked twice (by Re8 and Rf2)

    attackedsquare=e2by=black

  • True

    The bishop on e2 is defended only once (by Rf1)

    defendedsquare=e2by=white

  • False

    After Re8xe2, White must recapture with Rf1xe2, and then Rf2xe2 wins that rook

    lineprefix=playedmoves=Rxe2 Rxe2 Rxe2assertion=type:captures_piece piece:rook

  • False

    Re8xe2 followed by Rf1xe2 and Rf2xe2 nets bishop and rook for a single rook

    lineprefix=playedmoves=Rxe2 Rxe2 Rxe2assertion=type:material_delta side:black min_value:3