Lelouch is canonically a speed chess bongcloud player : r/AnarchyChess

Lelouch and Light playing Chess by DinstruMental on DeviantArt

How did Lelouch win the chess match against the nobleman (Code Geass R1 Episode 1)? - Quora

Lelouch's logic : r/CodeGeass

ChessGPT is a genius among men : r/AnarchyChess

Lelouch vi Britannia (by LadyLazart) : r/CodeGeass

If Light and Lelouch played chess against one another, who would win? - Quora

This sums up the Bongcloud : r/AnarchyChess

If Light and Lelouch played chess against one another, who would win? - Quora

Chess, Code Geass Wiki