John Costello

Research John Costello’s games and opening repertoire

John Costello is rated 1806 in standard, 1820 in rapid by FIDE. John Costello plays for Isle of Man.

John Costello has FIDE ID 451819. Confirm the player’s identity and linked accounts before using their games for preparation.

Check the official FIDE record for ratings and identity. It is not a complete archive of game moves.

Use the openings as White and Black to identify recurring choices in the available games. Follow a branch into the repertoire explorer and inspect example games in the game history. Dates, time controls and sources affect which patterns are relevant to your next match.