GM Arjun Erigaisi (India) beat GM Maksim Chigaev (Spain) in round 4 of the 46th FIDE Chess Olympiad Samarkand 2026 (Open), in 36 moves.
The game turned on 28...Rxf1. Before it, Stockfish had the position as a clear advantage for White (+1.72); one move later, winning for White (+3.63).
Stockfish wanted 28...Qd6 instead. Can you see why? And 29.Rxf1, the engine's best reply, came straight back.
It began as the Queen's Indian Defense: Opocensky Variation.
Replay it move by move, then take the key position on against the engine.
- White
- GM Arjun Erigaisi, 2759 · India
- Black
- GM Maksim Chigaev, 2629 · Spain
- Result
- 1–0 in 36 moves
- Opening
- Queen's Indian Defense: Opocensky Variation · E17
- Event
- 46th FIDE Chess Olympiad Samarkand 2026, Open, Round 4 · Samarkand, Uzbekistan
- Key move: {0}
- 28...Rxf1
- Engine’s choice
- 28...Qd6