Reti's Queen Sacrifice · 1910
49% of club players play Re1 here — and it misses a forced mate in 2
rnb1kb1r/pp3ppp/2p5/4q3/4n3/3Q4/PPPB1PPP/2KR1BNR w kq - 0 949% of players rated around 1500 play Re1
in this position. It is the natural move, and it is not the best one.
| Move | Played by | Evaluation |
|---|---|---|
Re1 the reflex | 49% of 1500-rated humans | +111 centipawns |
Qd8+ the move | under 1% | mate in 2 and it is mate |
The move is Qd8+, which forces mate in 2. The reflex does not — it leaves an ordinary position. — a discovered check.
How this was checked
The evaluations are Stockfish. The human percentages are
Maia, a neural network trained on millions of human games and
conditioned on rating — so 49% of players around 1500
is a measurement of what people
actually do, not an estimate of what they might. Any tactical motif named above is verified against
the board geometry rather than described.
Paste a chess.com game you played and ChessCast makes a 10-20 minute coaching podcast about it — two hosts on the audio, and a board that moves in lock-step so you can watch the moment it turned. Every claim is checked against Stockfish before it is spoken.