Dmitry Andreikin: 31...Kf7? (blitz, 2026-08-24)

Deep puzzles: what the analysis missed

8 手

Dmitry Andreikin to move, Black. Lichess's analysis gave the move played no mark (+1.29 before, +1.07 after). A 20-million-node search calls it a mistake, 12 win-chance points against a best move that is unique. Find it before opening the sideline.

The game move. Lichess: +1.29 to +1.07, no label. At 20M nodes: mistake, 13.9 win% given up, 12 points worse than Rc8.