rect.run

rect.run is a daily Shikaku puzzle web app built with Fresh and Deno.

The app generates one puzzle per date from a deterministic seed, stores progress in localStorage, and is designed for touch-first play on phones.

Core product behavior:

• one daily puzzle route per date
• deterministic generation from the date seed
• swipe/drag rectangle entry on the board
• local resume on the same device
• fixed one-screen mobile game layout
• compact clue strip for dense boards
• PWA metadata and installable web app assets

Tech stack:

• Deno 2
• Fresh
• Preact islands for board interaction
• Deno Deploy-friendly static + server-rendered app structure

Development:

deno task dev

Quality checks:

deno task check
deno task test
deno task build

Project structure:

• routes/ page routes and API routes
• islands/ShikakuGame.tsx interactive game UI
• lib/shikaku/ puzzle generation, validation, interaction helpers
• lib/storage/ local progress persistence
• static/ icons and web manifest
• tests/ unit tests

Notes:

• /d redirects to the current available puzzle date
• /api/puzzles/[date] returns generated puzzle data for a date
• branding is set for deployment at rect.run