Games · 3–15 min · Mouse · Touch

Chess vs. a tiny AI

Chess against a few hundred lines of minimax

Open-source work, ported to the web by Spare · Apache-2.0

Live preview · Chess vs. a tiny AIOpen in new window

Drag a white piece (hover shows legal squares); “New game” restarts; auto-saves

AboutWhat it is and how to play

The classic tutorial project: minimax with alpha-beta pruning and piece-square tables. You play White; the AI shows positions evaluated and time taken. Search depth 1–5.

#chess #board #ai #strategy

DetailsSource and licence

Author: Lauri Hartikka
Origin: Open-source work, ported to the web by Spare
Type: Games
Length: 3–15 min
How to play: Drag a white piece (hover shows legal squares); “New game” restarts; auto-saves
Controls: Mouse · Touch
Licence: Apache-2.0
Source: github.com/lhartikk/simple-chess-ai★ 946 · as of 2026-09-25
Version: 665606d
Changes: Added a localized title bar, status line and “New game” button, in-page messages instead of alert(), a narrow-screen board and Spare pause/snapshot hooks (PGN saves); AI and board code unchanged. Includes chessboard.js (MIT), chess.js (BSD-2), jQuery (MIT)
Attribution: simple-chess-ai © Lauri Hartikka, Apache License 2.0 — modified by Spare (see SPARE-CHANGES.md)