Alekhine Defense, 2024: Erigaisi (2797) against Abdusattorov (2783), a game that ran to 117 moves. After 3.d4 d6 4.c4 Nb6 5.f4, White pushed 11.d6 and wedged a pawn into the black camp. The first turning point is 14.O-O, flagged as a mistake: the evaluation swings from −0.9 to +1.0, and Black’s edge evaporates. Later Black was clearly on top until 40...Kg5, another mistake, which pulls the evaluation from −4.1 back to −2.4. The rook-and-bishop ending dried out, the last pieces came off with 115.Rxb6+, and the draw was agreed. Accuracy: 94% for White, 90% for Black. The lesson: a big advantage can vanish with one loose king move.