


What Chess does
Real-time chess: grab an open seat or let the host pick two players — everyone else watches the board live. Full rules: castling, en passant, promotion, checkmate and draw detection (including threefold repetition).
What you can do
Seats by invitation
The host offers white and black; the players accept. Spectators cannot move pieces.
Full rules, everywhere
Castling, en passant, promotion, check and mate are enforced by the same engine on every screen.
A clock the room can see
Time control runs in sync for players and spectators alike.
Host controls
Pick a time control for the next game, seat players from the People panel, and free a seat when someone leaves, all from the Controls panel.
How it works
- The host opens Chess in the main window and picks a time control.
- The host seats two participants from the People panel; everyone else spectates.
- Players move on their own screen; the board and clock update for the whole room.
- The host can free a seat or start a new game at any time.
Add Chess to your show
- Start or open your show on cya.live or in the Cya app. You are the host.
- Open Apps in the room and switch to the Apps Center tab.
- Tap Install. The app joins My Apps in every room you host.
- Pick it from My Apps to put it in the main window. Its settings live in the Controls panel.
Only the host installs. Everyone else joins from the room on web or mobile with nothing to download.
Your questions, answered.
Can spectators move pieces?
No. Only the two seated players can move; the host seats them from the People panel.
Does Chess enforce the rules?
Yes. Legal moves, check, checkmate, stalemate, castling, en passant and promotion are all enforced.
Is the Chess app free?
Yes. Install it from the Apps Center inside any Cya show.
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Build your own Cya app
A public SDK with a manifest, synced state, roles, storage and moderator controls. Ship a game, a tool or a whole format into live shows.