The Chess Variants Pages is the most comprehensive reference site for chess variants on the internet, documenting hundreds of variants from well-known ones like Chess960, Bughouse, and Crazyhouse to obscure historical forms and modern inventions. Each variant entry covers the rules, history, strategic differences from standard chess, and links to where it can be played online.

The site also hosts a game courier system that allows players to conduct turn-by-turn correspondence games in dozens of variants, including many that have no dedicated online server. User-designed variants can be submitted and added to the collection.

All content is free to read without registration. The Chess Variants Pages is the go-to reference for anyone curious about the breadth of chess-related games — from four-player chess and atomic chess to Shogi-inspired hybrids and century-old regional variants.