THE PLAYBOOK · CDBRM
How to play Chess Online
Choose Chess Online at CDBRM for a browser session with its rules close at hand. The aim is straightforward: Checkmate the opposing king. This edition highlights read the feedback.
Full legal moves; checkmate, stalemate, basic insufficient material, automatic 50-move/threefold draws. No online matching or tournament clock.
Read the feedback
Status messages explain the current state and rejected actions. Check them when an action does not behave as you expected.
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 is included in this edition?
Full legal moves; checkmate, stalemate, basic insufficient material, automatic 50-move/threefold draws. No online matching or tournament clock.
Which controls should I use?
Tap a piece and target; choose a promotion piece when needed.
Can you show a concrete example?
Castling cannot pass through an attacked square.
