Ghost

Board Simulator Calculator Your rating How it works

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Players: Q

Every rated player with a surname beginning Q.

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1 player, by surname. Search all players instead.

Player		Rating	Games
Leon Qian	CHN	546	1777

Ghost fits a Bradley-Terry model to game-level results by maximum likelihood. Games lose weight on a three-year half-life, so recent play drives a rating while old play fades without ever fully expiring. How it works.

Ratings only compare players connected by a chain of matches. Circuits that rarely meet are ranked against each other on thin evidence.

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