claude (duplicate_chess)
31 lines
1.1 KiB
Markdown
31 lines
1.1 KiB
Markdown
# Duplicate Chess
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A local, single-operator browser sandbox for **duplicate chess** — a four-player
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chess variant invented by Andrew Freiberg. Four players (North, South, East, West)
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and four boards (NW, NE, SW, SE); each player controls one colour on two boards and
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must play the identical move on both. A captured piece leaves a frozen "ghost" twin
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on the player's other board.
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This tool puts all four boards on one screen as a rotated "compass", enforces the
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synchronized-move coupling, renders ghosts, shows the move-legality intersection,
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and detects the endgame.
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## Develop
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```
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pnpm install
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pnpm dev # run the dev server
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pnpm build # production build
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pnpm test # run the engine test suite (vitest)
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```
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`pnpm exec svelte-check --tsconfig ./tsconfig.json` typechecks the Svelte/TS code.
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## Design
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See `docs/superpowers/specs/2026-05-19-duplicate-chess-design.md` for the full design,
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and `docs/superpowers/plans/2026-05-19-duplicate-chess-sandbox.md` for the build plan.
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This is v1 — a local sandbox. Networked multiplayer, AI opponents, and a free
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position editor are explicitly out of scope (see the spec, §7).
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