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46th FIDE Chess Olympiad 2026 · Open Round 9

Mchangama Omar (1701) vs Jeremias Costa G Miguel (1785)

Board 4, Comoros Islands – Sao Tome and Principe. Result: 0-1. 59 moves. Opening: French Defense: Exchange Variation (C01).

Key moments

Move 46… h6 — blunder
Move 50… g4 — blunder
Move 52. f5+ — blunder