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Square Chess

GitHub chriotte/square-chess

Install Square Chess

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  • Confirm in Android’s install dialog. Allow Zapstore to install unknown apps if Android asks

Unclaimed app

The catalog lists Square Chess from GitHub chriotte/square-chess and signs its releases. The developer has not claimed it. The file is still checked before you install it.

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How trust works

Chess app designed for square screens, e-ink devices, and physical keyboards. Play against the computer at ten levels or solve 10,000 offline tactics puzzles. Record real-board games, use a chess clock, and export PGN files.

Square Chess is a chess app built for Android devices that ordinary chess apps often overlook — square and near-square screens, e-ink devices, compact devices and devices with physical keyboards.

The board comes first. Square Chess uses as much of the display as possible, whether you are playing by touch, typing moves on a physical keyboard, or using an e-ink screen.

Play against the computer at ten difficulty levels, from beginner-friendly play to full strength. You can also enable hints when you want a little help without giving up control of the game.

Train your tactics with 10,000 offline puzzles. Choose a theme or play a quick set of five, and the puzzles you miss come back for review.

You can also:

• Play with a friend on the same device, with an optional chess clock. • Record games played on a real chessboard and review them afterwards. • Type moves such as e4, Nf3, O-O or e2e4 on a physical keyboard. • Use a dedicated e-ink mode with a clear black-and-white board, shape-based highlights and no animations. • Review, undo and export your games as PGN for Lichess, ChessBase and other chess software. • Use the built-in standalone chess clock for over-the-board games.

Everything runs locally on your device.

No ads. No account. No Internet permission.

Your games and settings stay on your device.

Square Chess works on conventional Android phones and tablets too, but is designed especially for devices where standard chess apps do not make the best use of the screen or hardware.

Summary generated by Zapstore from source.

Original description, as the developer published it.

Zap Square Chess

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No developer has verified this app yet, so sats go to npub1gnwq4…thdn3y, the catalog that brought it to you.

Amount in sats

Latest release

Nov 5, 2026

Unclaimed app No Google servicesWorks offlineSource available · GPL-3.0-or-later

The catalog lists this app from GitHub chriotte/square-chess and signs its releases. The developer has not claimed it. Are you the developer? Claim your app

It asks for no sensitive access. Data stays on the phone.

Release notes

New: the chess clock panels turn separately, so both players can read their own time. Screen readers now say the selected piece and the last move, and announce each move in words or in chess notation (Settings).

SHA-256:

8bfb71b80315ae2877cff7fbb939e86e352caf0727c6bee55353ff93e108eb3a  Square-Chess-v1.5.0.apk

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Get Square Chess the private way

Updates checked on your device, and every release verified before it installs.

Get Zapstore for Android

  1. Tap Download APK below.Scan the code with your Android phone’s camera.
  2. If Android asks, allow your browser to install unknown apps.
  3. Open Zapstore and finish the onboarding.
Download APK

v2.0.4 · 71.2 MB · Android 10+

Verify the download

On a computer, run shasum -a 256 <the file you downloaded>. It should print: b13e01319fecf0b3ba1fd60132758bd0fa08a235836c52d44fddb412cf1b7137

If you have zsp, Zapstore’s publishing tool, zsp utils extract-apk <the file you downloaded> works too. Its hash should be the same SHA-256: b13e01319fecf0b3ba1fd60132758bd0fa08a235836c52d44fddb412cf1b7137

On the phone, AppVerifier should show this signing certificate: 99e33b0c2d07e75fcd9df7e40e886646ff667e3aa6648e1a1160b036cf2b9320

Source code All releases and notes

Get zsp

  1. Download the file for your computer.
  2. Make it executable and put it on your PATH.
  3. In your project folder, run zsp.

Have Go? This does the same:

go install github.com/zapstore/zsp/v2/cmd/zsp@latest
macOS, Apple silicon Linux, x86-64 Linux, arm64

v2.0.1 · macOS and Linux

Verify the download

On your computer, run shasum -a 256 <the file you downloaded>. It should print the SHA-256 for the one you chose.

macOS, Apple silicon · 18.6 MB 99018fb9744e5ace2b44557550dc333496239912c0e9b1137266d4922c803346

Linux, x86-64 · 23.8 MB 1ef5373f8ecd9ba63d2c3fab98abb0d31b2244a2aac31b3749fb205c7d5f5b38

Linux, arm64 · 22.1 MB e421005ee47cba58293dce4277bb784e4cfe706dbbcb8617d671629d0238be18

Source code All releases and notes