Magnus Carlsen: 15...Ne5? (blitz, 2023-07-01)

Deep puzzles: what the analysis missed

2 手

Magnus Carlsen to move, Black. Lichess's analysis gave the move played no mark (-0.94 before, -0.43 after). A 20-million-node search calls it a blunder, 16 win-chance points against a best move that is unique. Find it before opening the sideline.

The game move. Lichess: -0.94 to -0.43, no label. At 20M nodes: mistake, 13.1 win% given up, 16 points worse than f5.