Chess on a 10×10 board.
The border matters.

Classic FIDE rules on an inner 8×8, plus a one-square border you can step onto. Play in your browser: pass-and-play or vs Fairy-Stockfish (a powerful open-source chess engine that supports non-standard board variants). Now on iPhone, too.

Play in browser Get it on iPhone
Border Chess game in progress

Play in browser

No install. Works on desktop and mobile.

  1. Open the game
  2. Choose Play vs Bot or Play with Friend
  3. Works best in Safari or Chrome

Now on iPhone

Border Chess is on the App Store. Download it for iPhone, or play in your browser on any device.