Chess

About chess

Play chess online for free against the Stockfish AI engine, or share a device for a two-player hot-seat match. Pick a difficulty from Beginner to Master — Stockfish adjusts its strength on the fly. The board uses standard rules: castling, en passant, promotion, and the fifty-move draw.

Pondernook chess is built for quick five-minute sessions when you want to think but don't want to commit to a tournament timer. No signup, no install, no ads chasing you between moves — the game loads in your browser and runs entirely on your device. If you're learning, drop the difficulty and use undo to explore alternate lines; if you're sharpening up, push Stockfish to Hard and try not to drop material. Works on desktop, tablet, and phone.