GM Anish Giri (Netherlands) beat GM Nikolas Theodorou (Greece) in round 4 of the 46th FIDE Chess Olympiad Samarkand 2026 (Open), in 38 moves.
The game turned on 20.f4. Before it, Stockfish had the position as a clear advantage for Black (-1.76); one move later, a clear advantage for Black (-2.48).
Stockfish wanted 20.Ba1 instead. Can you see why? And 20...Bxh3, the engine's best reply, came straight back.
It began as the Zukertort Opening.
Replay it move by move, then take the key position on against the engine.
- White
- GM Nikolas Theodorou, 2633 · Greece
- Black
- GM Anish Giri, 2757 · Netherlands
- Result
- 0–1 in 38 moves
- Opening
- Zukertort Opening · A05
- Event
- 46th FIDE Chess Olympiad Samarkand 2026, Open, Round 4 · Samarkand, Uzbekistan
- Key move: {0}
- 20.f4
- Engine’s choice
- 20.Ba1