Free to play · no sign-up

Play chess against Bobby Fischer.

An AI in Fischer’s style – an independent interpretation, not Bobby Fischer himself.

Bobby calculates with the full strength of the DeepSquare engine and chooses among its strongest candidate moves by a Fischer-inspired style profile. Pick your match room, play right in your browser and take your game with you as PGN. Plus: Fischer’s life and 949 of his games to replay.

Play for free

Play as often as you like. An optional free DeepSquare Account collects your games and connects BobbyChess, DeepSquare and MateBlade.

Atmospheric illustration of a chess match room inspired by Reykjavík 1972 – not a historical photograph — Inspired by Reykjavík · 1972 **The calm before the match.** An atmospheric interpretation — not a historical photograph.

Era Profiles

Rise, peak, comeback or the complete career. Explore profiles →

Your games stay yours

A free account saves every completed game automatically.

DeepSquare inside

Meet the technology behind your opponent. Explore Engine Lab →