Reasoning eval · Puzzle plbGC
2 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.
- Rating
- 1154(1200 band)
- Solution
- h2h6 g7h6 g4g8
- Motifs
- matemateIn2middlegameshort
- FEN
- r3b1rk/pp4p1/7p/2pPq3/6Q1/2P1P3/PP5R/2K3R1 w - - 0 26
Stated plan
Sacrifice the rook on h6 to force gxh6, then deliver mate with Qxg8+.
Reasoning
Black's bishop on e8 blocks the a8-rook from ever reaching g8, which is the key to this combination. Playing Rxh6+ forces gxh6 (the only legal response, since Kg8 is blocked by the black rook and no other piece can capture or block). Then Qxg8+ is unstoppable mate: the king cannot capture (Rg1 covers g8 through the now-open g-file), the rook on a8 is blocked by its own bishop on e8, and the bishop cannot reach g8. This forces checkmate.
Claims extracted from it
3 true · 0 false · 3 unverifiable
Hover a claim to light up the squares it is about.
- True
Black's bishop on e8 blocks the a8-rook from ever reaching g8
piece_on_squaresquare=e8piece=bishopby=black
- True
Playing Rxh6+ forces gxh6, the only legal response
lineprefix=playedmoves=Rxh6+assertion=type:forced_reply
- Unverifiable
Kg8 is blocked by the black rook
- True
After Rxh6+ gxh6, Qxg8+ is unstoppable mate
lineprefix=playedmoves=Rxh6+ gxh6 Qxg8+assertion=type:is_mate
- Unverifiable
The king cannot capture on g8 because Rg1 covers g8 through the now-open g-file
- Unverifiable
The rook on a8 is blocked by its own bishop on e8
unverifiable