Reasoning eval · Puzzle IXCby

2 of 3 models found the move, and said 3 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.

8
7
6
5
4
3
2
a1
b
c
d
e
f
g
h
SolutionPlayedWhite to move
Rating
1203(1200 band)
Solution
e3c5 b4c5 c1c5
Motifs
advantageforkmiddlegameshort
FEN
5k1r/p1p2p1p/6p1/3BPn2/1q5b/1P2B3/P2N2PP/2R2K1R w - - 2 21
MissedPlayed c1c4(−1546cp)Claims true 67%445 out · $0.0051 · 6.3s

Stated plan

Attack the queen with the rook to win material via a favorable exchange.

Reasoning

Rc1-c4 attacks the undefended black queen on b4. If Qxc4, Nd2xc4 wins the queen for a rook, a huge material gain; otherwise Black must retreat the queen losing tempo and initiative.

Claims extracted from it

2 true · 1 false · 1 unverifiable

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

  • False

    Rc1-c4 attacks the undefended black queen on b4

    attackedsquare=b4by=white

  • True

    the black queen on b4 is undefended

    defendedsquare=b4by=blacknegated=true

  • True

    If Qxc4, Nd2xc4 wins the queen for a rook

    lineprefix=playedmoves=Qxc4 Nxc4assertion=type:captures_piece piece:queen

  • Unverifiable

    If Black does not take on c4, the queen must retreat

    unverifiable