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46th FIDE Chess Olympiad 2026 · Open Round 6

John Costello (1832) vs Jerome MBOULA MBOUMBA (1812)

Board 2, Isle of Man – Gabon. Result: 0-1. 29 moves. Opening: Semi-Slav Defense: Noteboom Variation (D31).

Key moments

Move 14. Ne5 — blunder
Move 15. Qb2 — blunder
Move 21. Bd3 — blunder