mhonert/chess

:sushi: Wasabi Chess Engine - written in AssemblyScript

🍣 Wasabi Chess Engine

Wasabi Chess is a web-based chess engine, written in AssemblyScript that runs directly in the Browser.

Play here!

The React web application embeds the engine using Web Workers to compute the AI moves in the background without blocking the main thread for the UI.

Features

• Chess engine implemented in AssemblyScript
• Computer opponent with 6 difficulty levels
• Opening Database for varied gameplay
• Move history to undo player moves
• Drag'n'Drop support to move chess pieces
• Touch support for mobile devices

Built With

• AssemblyScript - for the chess engine
• as-pect - to test the engine
• react - for the user interface
• react-dnd - for Drag and Drop support
• styled-components - to style React components in JS
• react-fontawesome - for some font icons
• workerize-loader - to load modules as Web Workers
• as-wasi - for WASI system calls (only for the standalone UCI engine)

License

This project is licensed under the GNU General Public License - see the LICENSE for details.

Attributions

• Images for the chess pieces come from Wikimedia Commons
• The opening book was generated from a selection of chess games from the FICS Games Database
• A set of 725000 test positions collected by the author of Zurichess was used to tune all evaluation parameters

chess's Issues

v1.5.0 : error message (Windows 7 64 bit SP1) - after installation of Wasmer 0.17.1

Hello,

after a double mouseclick on wav.exe respectively Windows command script the following indication is shown: procedure entry point "GetSystemTimePreciseASFileTime"was not found (DLL, KERNEL32.dll) - Wasmer 0.17.1 for Windows https://github.com/wasmerio/wasmer/releases/download/0.17.1/wasmer-windows.exe is installed on my pc

(web app is o.k., of course)

What can be done?

Regards,

Win7 problem + fix

Hi Martin,

Today I found your Wasabi engine announced in the public CCRL forum and as I am the maintainer
of the XB/UCI chronology I wanted to check it before adding it to the chronology.
https://rwbc-chess.de/
https://docs.google.com/spreadsheets/d/1GXoy3lGhdKPJbatdw2_2dhWT3TkpthPcNtHs51MQydM/edit#gid=175552346

Wasm gives me an error on my old Win7-64 machine.
The procedure entry point GetSystemTimePreciseAsFileTime could not be located in the dynamic link library KERNEL32.dll.
Some googling led to attempting me to install a certain KB file from MS, but it couldn't be installed here. (KB2533623)

Another try was successful though and I just replaced Wasm with Wasmer and linked against it.
https://github.com/wasmerio/wasmer/releases
May be this helps people with the same problem. (still a lot Win7 users in the computerchess scene)

0.000: - Starting server: C:\Program Files (x86)\Wasmer\bin\wasmer.exe run C:\Engines\UCI\Wasabi_121-64\engine.wasm
0.046: - Priority class set to normal
0.046: - Thread priority set to normal
2.074: < Wasabi 1.2.1 by mhonert
3.775: > uci
3.775: < id name Wasabi 1.2.1
3.775: < id author mhonert
3.775: < option name Hash type spin default 32 min 1 max 768
3.775: < option name OwnBook type check default false
3.775: < option name UCI_EngineAbout type string default Wasabi Chess Engine (https://github.com/mhonert/chess)
3.775: < uciok

Do you have an idea of the speed difference with Wasmer vs. Wasm?

Guenther (RWBC)

No save/load

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