Spar with an adjustable engine opponent
Testing yourself in real games is essential for improvement. Chessyi lets you play full games against a computer opponent whose strength you control, from beginner-friendly ~1200 ELO to challenging master-level play.
Pick white or black, choose a time control from bullet to classical, and play on the same interactive board you use for analysis. When the game ends, stay on the position and switch to analysis mode instantly.
What you get
- ELO slider maps engine depth to human-like playing strength
- Play as white or black with full move validation
- Integrated chess clock with preset and custom time controls
- Seamless transition from game to post-mortem analysis
- Sound effects and captured-piece display for a polished feel
How it works
Choose vs Computer mode
Select your colour and target ELO on the mode selector.
Set the clock
Pick bullet, blitz, rapid, or a custom time control.
Play and review
Finish the game, then rewind and run Stockfish on critical moments.
Unique on Chessyi
- Same board for play and analysis, no exporting games elsewhere
- Local engine means the computer responds quickly without server lag
- Pair sparring sessions with opening practice on identical lines
Frequently asked questions
Related features
Full-strength Stockfish analysis in your browser
Run Local Stockfish engine analysis in your browser on Chessyi. Eval bar, multi-PV lines, depth control, and best-move arrows, no install, instant feedback.
Drill your openings with guided move validation
Train chess openings on Chessyi with 70+ named lines, move validation, hints, arrows, and repertoire-style practice. Build muscle memory for your opening repertoire.
Bullet, blitz, rapid, and custom clocks
Use Chessyi built-in chess clock for timed games vs the computer or local two-player. Presets for bullet, blitz, rapid, classical, plus custom controls.
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