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Play Chess960 online

In your browser or in the app. Nothing to install.

CH960 is a free Chess960 platform: play a friend by link or QR code, play the computer from any of the 960 starting positions, or solve puzzles in an endless feed — right here, no sign-up. The Android app adds rated games, arenas and training without internet. No ads, no purchases.

Made by Roman Morozov. CH960 is a free Chess960 platform: this website and an Android app on Google Play; papers on Undo Chess and on balanced start pairs are published on Zenodo. [email protected] · About the author

Think from move one.

Start position #356 — one of 960
960 starting positions
30,000+ tactics puzzles
1000-day training course
Free. No ads, ever

Everything you need to master Chess960

Undo Chess: take a move back — for a token

An experimental friendly game format for games with a friend. You can take your move back only by handing one of your tokens to the opponent, so every undo makes them stronger.

Opponent · Black
You · White

Each player has 2 tokens. A normal game is under way.

  1. Each player has 2 tokens. A normal game is under way.
  2. A mistake: the knight steps where a pawn can take it.
  3. The opponent punishes it: the pawn takes the knight.
  4. You give one token to the opponent — two half-moves go back.
  5. Your move again. The opponent now has 3 tokens, you have 1.
  6. This time the knight goes to g3. Clock time is not given back.

Chess960 starting position No. 1. Line: 1.e4 e5 2.Ne2 Nf6 3.Nf4?? exf4 — token — back to move 3 — 3.Ng3.

A token is the right to take back your previous move together with your opponent's reply. Once used, it passes to your opponent. Time is not returned.

Try it yourself

The same position as in the demo. Make the mistake yourself, then take it back with a token.

Opponent · Black
You · White

Your move as White. Play the mistake: knight e2 to f4 (tap or drag).

A token is the right to take back your previous move together with your opponent's reply. Once used, it passes to your opponent. Time is not returned.

Made by Roman Morozov. CH960 is a free Chess960 platform: this website and an Android app on Google Play; papers on Undo Chess and on balanced start pairs are published on Zenodo. [email protected] · About the author

Undo Chess rules

Frequently asked questions

What is Chess960?

Chess960 (also known as Fischer random chess) is a chess variant where the back-rank pieces start in one of 960 possible arrangements. Opening memorization matters less — understanding the position matters more.

Is CH960 really free?

Yes. Games, ratings, tournaments, lessons, puzzles and the 1000-day course are all free — no ads, no purchases. The app has no third-party trackers; how the website counts visits is described on the privacy page. The client is open source under GPLv3.

How does castling work in Chess960?

The king and rook always land on the same squares as in classical chess (g1/c1 for White), no matter where they started. To castle, move the king onto its own rook: in the browser, tap the king and then the rook; in the app, drag the king onto the rook.

Can I use CH960 offline?

Yes, in the app: lessons, puzzles and the 1000-day course work without internet; it is only needed for games with people.

Do I need to install anything?

No. Play a friend, play the computer and solve puzzles right in the browser — on a phone or a computer, without an account. The Android app is optional: it adds rated games, arenas and training without internet.

Start playing — nothing to install

Prefer an app?

The Android app adds rated games at 5+3, 10+5 and 15+10, arenas and training without internet.

The APK is for devices without Google Play.

Who makes CH960

CH960 is made by Roman Morozov. The goal: Chess960 open to everyone, for free — a game with a friend by link, learning from zero, honest balanced starts and new formats, with no ads and no purchases.

About the author · Write to us: [email protected]