Reasoning eval · Puzzle T7vB2

0 of 3 models found the move, and said 18 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
2489(2400 band)
Solution
g3f3 f6f3 d7d8 g8g7 g2f3
Motifs
advantagedeflectionendgameintermezzolongsacrifice
FEN
3r2k1/1p1R1p2/p3pqp1/8/3P4/6Q1/Pr3PP1/4R1K1 w - - 2 31
MissedPlayed d7d8(−1175cp)Claims true 33%5220 out · $0.0529 · 64.7s

Stated plan

Capture the rook on d8 with check, forcing a favorable simplifying trade.

Reasoning

White's rook on d7 attacks the black rook on d8 along the d-file, and since e8/f8 are empty, capturing gives check along the 8th rank. Black is forced to recapture with the queen (Qxd8), trading rooks and simplifying into a roughly balanced position while keeping White's pieces active and avoiding any tactical tricks (like losing the rook to a subsequent fork). This is clearly better than passive alternatives, which allow Black to consolidate the extra pawn and keep two active rooks.

Claims extracted from it

2 true · 4 false · 1 unverifiable

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

  • True

    White's rook on d7 attacks the black rook on d8

    attackedsquare=d8by=white

  • True

    Capturing on d8 gives check along the 8th rank

    lineprefix=playedmoves=Rxd8+assertion=type:gives_check

  • False

    Black is forced to recapture with the queen

    lineprefix=playedmoves=Rxd8+assertion=type:forced_reply pattern:queen

  • False

    After Rxd8+ Qxd8, the position is roughly balanced

    lineprefix=playedmoves=Rxd8+ Qxd8assertion=type:eval_at_least cp:0

  • False

    Rxd8+ keeps White's pieces active

    lineprefix=playedmoves=Rxd8+assertion=type:forced_reply

  • Unverifiable

    Passive alternatives allow Black to consolidate the extra pawn

    unverifiable

  • False

    Rxd8+ is clearly better than passive alternatives

    best_movemove=Rxd8+