Touch: Tap a piece to select it, tap a legal destination to move it. Confirmed working end to end against a real AI opponent on a simulated touchscreen. · Keyboard: Not required for play; U to undo, R to restart, Esc to pause are available as shortcuts.
About:
Part of LittleJS Arcade, an actively-maintained collection of classic games built on the LittleJS engine by its own author. Offers Player vs AI at a stated "Medium" difficulty, local Player vs Player, an AI vs AI spectator mode, options and a help screen — a complete chess implementation, not a tech demo.
Touch was tested directly: tapping a piece then its destination square moves it, the board updates, and the AI opponent replies on its turn, confirmed in separate sessions on a simulated phone and with mouse clicks on desktop. Zero console errors and zero failed requests throughout.
Phone check: played on a simulated phone (390x844, real touch tap-to-select-tap-to-move) and on desktop (mouse clicks) on 7 Sep 2026 — piece movement and AI response confirmed working on both; zero console errors, zero failed requests
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