Omnibus

Chess

Play the computer, or a friend device-to-device — no accounts, no server. Host a game to get a link, or open the link they sent you.

Play the computer

Difficulty

Play as

Play a friend

You'll play White. Host a game and send the link.

Got a game link or code?

  • 100% Free
  • No Sign-Up
  • No Credit Card
  • No Free Trial
  • No Pro Tier
  • No Watermarks

Nothing is uploaded. Just open it and start.

Play chess online, free

No sign-up, no download, no server. Take on a built-in computer opponent at the level you want, or play a friend by sharing a single link — the two browsers connect directly and every move travels straight between you. Full rules, with music and sound.

Play the computer

Three difficulties and your choice of color — an AI that searches ahead, takes what you hang, and hunts for mate.

Two-player, peer-to-peer

Play a friend over a direct browser-to-browser link — no game server, and moves never pass through us.

All the real rules

Castling, en passant, promotion, check and mate — plus draws by stalemate, repetition, the fifty-move rule and insufficient material.

Phone or laptop

A responsive, touch-friendly board plus a scannable QR code, so any two devices can face off.

Private by design

No accounts, nothing uploaded, no server storing your game. Free, with no sign-up.

Music & sound

A contemplative background track and crisp move, capture and check effects — all synthesized in your browser, with toggles.

Optional voice & video

Flip on a camera-and-mic call before you connect and chat face-to-face while you play — same connection, still peer-to-peer.

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Frequently asked questions

Can I play against the computer?
Yes — pick “Play vs Computer”, choose a difficulty (Easy, Normal, or Hard) and whether you play White, Black, or a random side, and start straight away. No connection is needed. The computer places no demands on the network — it runs entirely in your browser.
How strong is the computer?
It searches ahead and scores positions by material and piece placement, so it takes free pieces, avoids hanging its own, and finds forced mates. Easy looks one move ahead and plays loosely; Normal looks two; Hard looks three and always picks a top move. It's a solid, beatable casual opponent rather than a grandmaster engine.
How do two people play on different devices?
It uses a direct browser-to-browser (WebRTC) connection with a manual handshake. One player taps “Host a game” and gets a link; the other opens that link and their device produces a short answer code; the host pastes that code back in and the two browsers connect directly. There's no game server in the middle — after the handshake, every move travels straight between the two devices.
Do both players have to be on the same Wi-Fi?
Not necessarily. On the same network it always works. Across different networks it works in most cases too, using free public STUN servers purely to help the two browsers find each other — they never see your moves. The only setups that can't connect directly are strict “symmetric NAT” networks, which need a relay server this tool deliberately doesn't run.
Which chess rules are supported?
All of them. Castling (with the usual restrictions), en passant, pawn promotion, and check, checkmate and stalemate are all enforced, and draws are called by stalemate, threefold repetition, the fifty-move rule, and insufficient material. Illegal moves — including ones that would leave your king in check — simply aren't allowed.
How do I move a piece?
Tap one of your pieces and its legal moves light up; tap a highlighted square to move there. Tap a different piece to switch your selection. When a pawn reaches the last rank, a small chooser lets you promote to a queen, rook, bishop, or knight.
Is anything uploaded or tracked?
No. There's no account, no server storing your game, and nothing uploaded. Against the computer everything is local; against a friend your moves are exchanged directly between the two browsers over the peer connection. It's free, with no sign-up.
Is there sound?
Yes — a calm background track and effects for moves, captures, castling, check and checkmate, all generated in your browser (no audio downloads). Independent music and sound-effects toggles sit at the top of the game if you'd rather play quietly.
Can we talk over voice or video while playing?
Yes. Tick “Play with voice & video call” before you host, and the game will ask for your camera and mic. Your opponent is prompted too when they open the link, and you'll see each other in small video tiles beside the board, with buttons to mute or turn off your camera. The call rides on the very same peer-to-peer connection as the game — nothing extra to set up, and it never passes through a server. If someone has no camera, it gracefully falls back to voice only.
Can I play on my phone?
Yes. The board is fully responsive and touch-friendly, and the host screen shows a QR code so your opponent can scan the link straight into their phone. One of you can be on a laptop and the other on a phone.
The connection didn't work — what can I do?
Make sure the second player opened the full link (or pasted the whole code), and that the host pasted the answer code back in and pressed Connect. If you're on networks that block peer connections, try putting both devices on the same Wi-Fi. You can always start over from the host screen — or just play the computer instead.

Spotted a bug or have a suggestion?

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