STONECROWN CHESS — Sculpted 3D Chess with Four AI Levels

Play classic chess against four levels of local AI on a sculpted stone board. Ivory and obsidian pieces move with weight and shatter into geometric fragments when captured. Choose white, black or random; full castling, en passant and four promotion choices. Local resume, full-turn undo and optional quick or reduced-motion animations. Desktop, tablets and phones; portrait-first mobile, sound off by default.

Platforms & play modes

desktop, tablet, mobile. Single-player game. No human multiplayer.

Controls

Click or tap your piece, then a marked legal square. Desktop also supports drag-and-drop. Choose white, black or random and four real local Stockfish AI strengths. Standard chess with castling, en passant, checkmate, stalemate, insufficient mating material and queen/rook/bishop/knight promotion. Claim threefold repetition or fifty moves; fivefold repetition and seventy-five moves end automatically, with checkmate taking precedence. Undo the last complete human turn, restart, resign, toggle legal hints and fold the scorebook. P/Esc pauses, Space skips the current animation, M toggles sound. Board view buttons allow limited rotation and a higher angle. Legal results and statistics save before animation; resume the current position in this browser. No accounts, cloud sync or online multiplayer. AI runs in a local browser Worker, not Cloudflare Workers; no gameplay APIs. Phones favor portrait. Every visit is muted and language comes only from the portal URL.

Can I play against other people?

This version is a solo chess game against four AI levels. AI runs locally in your browser; no online or local human multiplayer is included.

Do the capture animations change chess rules?

No. Every legal move is committed before the visual animation. There are no health bars or random damage; kings are checkmated rather than captured.

How is my position saved?

The position, full move history and difficulty records save automatically in this browser. Reopening offers Continue; clearing browser storage removes the local save. There is no cloud account.

Free to play. No downloads or sign-up. Sound starts off; enable it manually.