THE PLAYBOOK · YSSDYY
How to play Chess Online
Chess Online on YSSDYY is organised around a clear objective: Checkmate the opposing king. Begin with one decision at a time and use the playbook beside the game.
Play on one device with a friend or against the basic computer opponent. Repetition and the fifty-move rule trigger an automatic draw here; there is no internet matchmaking or tournament clock.
One decision at a time
Focus on the next valid action. After taking it, check how the position or game state changed before making another choice.
Your goal
Checkmate the opposing king.
Step by step
- Select local play or basic computer.
- Choose a piece and a legal target.
- Castling, en passant and promotion obey king-safety rules.
- Use the promotion selector before moving to the last rank.
- Undo or New game restarts play.
Controls
Tap a piece and target; choose a promotion piece when needed.
A useful example
Castling cannot pass through an attacked square.
Watch out for this
The computer is a small search opponent, not a rated engine.
Common questions
What completes a round?
Checkmate the opposing king.
Which controls should I use?
Tap a piece and target; choose a promotion piece when needed.
What can I play here?
Play on one device with a friend or against the basic computer opponent. Repetition and the fifty-move rule trigger an automatic draw here; there is no internet matchmaking or tournament clock.
Does play involve an account or cash?
No. Play is free, without registration, deposits, bets or cash prizes.