Play xiangqi (Chinese chess) with a friend
Open a board, send the link. Whoever opens it first plays the other side.
Clock
On your own? Solve an endgame puzzle.
- Red moves first. The general never leaves the palace, and the two generals may not face each other down an open file.
- Every move is checked on the server before the other board sees it, so a modified browser cannot slip one past you.
