FIDE World Amateur Chess Championships 2026 · Sub2000 Round 3
Roy Marpaung (1864) vs Aqil Ainuddin Naufal Akhramsyah Muammar Ubaidah (1966)
Board 4. Result: 0-1. 40 moves. Opening: Sicilian Defense: Kalashnikov Variation (B32).
Key moments
- Move 16. a3 — blunder
- Move 19. b4 — decisive