iPhone & iPad
Safari only - iOS does not let other browsers install web apps.
- Open ITZA Chess in Safari.
- Tap the Share button.
- Choose Add to Home Screen.
- Tap Add.
Install
Put it on your home screen
ITZA Chess is a website that installs like an app. There is nothing to download from a store, nothing to approve, and nothing to update by hand - but you can still have an icon and a full screen.
The short version
Open Settings, then App, then Install
On Chrome and Edge that button raises the browser's own install prompt. On every other browser it shows you exactly which menu to open, because Safari, Firefox, Opera and Samsung each do it their own way. The instructions below are the same ones the app will give you.
Android - Chrome or Edge
The only browsers that raise a prompt automatically.
- Open ITZA Chess.
- Tap Install when the prompt appears, or open Settings -> App -> Install.
- Confirm, and the icon appears with your other apps.
Android - Firefox
Installs from the browser menu by design.
- Open ITZA Chess in Firefox.
- Open the browser menu.
- Choose Add app to Home screen.
Android - Opera
Also a menu item rather than a prompt.
- Open ITZA Chess in Opera.
- Open the browser menu.
- Choose Home screen.
Android - Samsung Internet
- Open ITZA Chess in Samsung Internet.
- Open the menu.
- Choose Add page to, then Home screen.
Desktop
Chrome, Edge and other Chromium browsers.
- Open ITZA Chess.
- Click the install icon at the end of the address bar, or use Settings -> App -> Install.
- It opens in its own window from then on.
No install button? Only Chrome and Edge can raise one programmatically. Firefox, Opera and Safari install through their own menus, which is a decision those browsers made rather than something missing here. ITZA Chess also runs perfectly well as an ordinary tab - installing only removes the browser furniture and adds the icon.
Once it is installed
It keeps working when the signal does not
The app caches itself the first time you use it, so the board, the engine, the lessons and your saved games are all on the device. On a plane, on the underground, or on a hotel network that has given up, you can still play.
- Works offline: games against the computer, learner mode, offline mode, pass & play, all thirteen lessons, the analysis board, and your local game history.
- Needs the chain: online games, the lobby, in-game chat, rating updates and cross-device history sync.
- Updates itself the next time you open it with a connection. There is no update to install.
What it needs
- Connection
- HTTPS, required for install
- Browser
- Any current browser
- Account
- Only for online play
- Storage
- A few megabytes
- 3D board
- WebGL, loaded on first use
- Third-party requests
- None
The 3D library is served from the node rather than a content delivery network, so 2D players never download it.
Put it on your home screen.
No app store, no account required to start, and the board still opens when you are offline.