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100% in your browser · Stockfish 18 · no account
Play Chess Against Computer — Free, No Sign-Up
Play chess against the computer at any level, free: nine bots from 400 to 3200 Elo, powered by Stockfish 18 running in your browser. No account, no download, no daily limits — and every game ends with a free full game review.
Chess bots from beginner to unbeatable
Each bot plays at a fixed strength, so you always know what you're up against. The beginner bots make real blunders — hanging pieces, missed mates — while the 1500+ bots use Stockfish's own calibrated Elo limiting. Every bot has its own page if you want to jump straight into a game at that level:
- Pia — 400 Elo · Just learned the rules. Hangs her queen and celebrates anyway.
- Ben — 700 Elo · Plays in the park at lunch. Spots your threats… about half the time.
- Zara — 1000 Elo · Knows forks and pins. Still forgets her back rank exists.
- Ravi — 1250 Elo · Club regular. Punishes hung pieces, drifts in quiet positions.
- Elena — 1500 Elo · Solid club player. You will need a real plan, not just tricks.
- Viktor — 1800 Elo · Tournament veteran. Converts small edges with zero mercy.
- Mei — 2100 Elo · Expert strength. One loose move and the game quietly slips away.
- Nadia — 2500 Elo · Master level. Beating her is a story you get to tell.
- Max — 3200 Elo · Full-strength Stockfish. Nobody beats Max. Draw and be proud.
How to play chess against the computer
- Choose your side and time. Play as White, Black, or random, with a preset clock (1 to 30 minutes, with or without increment), your own custom time and increment, or no clock at all.
- Click an opponent. Pick a bot from 400 to 3200 Elo — from total beginner to full-strength Stockfish. The game starts instantly.
- Play the game. Move by dragging or tapping. The bot replies in about a second, right in your browser.
- Review the game free. When it ends, one click gives you a full free game review — accuracy, blunders, and the moves you missed.
Finish the game, get a free game review
This is what makes playing here different: when your game ends, one click runs a full free game review — every move classified from Brilliant to Blunder, your accuracy and estimated rating, and an eval graph of the whole game. Play a bot, see exactly where you went wrong, then fix your mistakes — the entire improvement loop, free.
No download, no account, no limits
The engine is Stockfish 18 compiled to WebAssembly, running on your own device. That's why there is no sign-up wall, no ads between games, and no "3 games per day" meter — there's no server doing the work, so there's nothing to ration. It also means your games are private: nothing you play is uploaded anywhere.
How this compares to Chess.com and Lichess
| Chessda (this site) | Chess.com bots | Lichess vs AI | |
|---|---|---|---|
| Price | Free, all bots | Most bots need a paid plan | Free |
| Account needed | No | Yes, for most features | No (limited without one) |
| Strength range | 400 – 3200 Elo | 250 – 3200 | Stockfish levels 1–8 |
| Post-game review | Free, unlimited, one click | Paywalled after the free taste | Free (server analysis) |
| Where it runs | Your browser (private) | Their servers | Mixed |
Comparison based on each site's publicly described free tier and may change; Chessda is independent and not affiliated with Chess.com or Lichess.
Frequently asked questions
Is playing chess against the computer here really free?
Yes — every bot, every game, unlimited. The engine (Stockfish 18) runs in your own browser, so there's nothing to meter and nothing to pay for.
Do I need an account or a download?
No sign-up, no login, no app. Open the page and play. Your game is saved in your browser, so a refresh doesn't lose it.
How strong are the bots?
The ladder runs from Pia (400 — just learned the rules) to Max (3200 — full-strength Stockfish). Bots at 1500+ use Stockfish's own calibrated strength limiting; the beginner bots also make genuinely human-ish blunders so they're actually beatable.
Which bot should I play first?
Pick one about 100–300 points above your rating for a challenge, or at your level to practice technique. If you don't know your rating, start with Zara (1000) and move up when you win twice in a row.
Can I review the game afterwards?
Yes — that's the point. Every game ends with a one-click, free, unlimited game review: move classifications from Brilliant to Blunder, accuracy, and an eval graph. On other sites that's a paid feature.
Got a human opponent handy? Play 2 player chess with a friend on one device — pass-and-play with the same clocks and free review. Want to analyze a position instead? Open the free analysis board, or review a game you already played.