A tournament between versions of the chess engine, played entirely in your browser. Every move is run from the code in this page, each game in its own background thread, and the rating table updates after every game.
Results are saved in this browser as games finish, so you can close the page and press Start later to continue.
Ratings here are relative: they show how far apart the players are, pinned to an anchor (by default: the original engine is pinned at 1000).
The default pins the original engine at 1000, which is my estimate.
Rating ± is a 95% interval. It narrows as games accumulate: roughly ±100 after 40 games per player, ±50 after 150.
No games yet.
Row player's score against the column player: wins–draws–losses.
Nothing running.
No games finished.