# Coronet

> Daily color-region logic puzzle at https://coronet.one — one crown per row, column, and color; crowns cannot touch (even diagonally).

Coronet is a free daily puzzle game in the browser. Today’s board is free for everyone. Optional Unlock All ($2.99 via Stripe) adds unlimited hints, expert practice sizes, and the past-daily archive.

## For people

- [Play Today](https://coronet.one/): open the live board
- [Guides hub](https://coronet.one/guides/): how to play, LinkedIn Queens, tips, rules, comparisons
- [Markdown summary](https://coronet.one/index.md): same facts without the SPA chrome

## For agents

- [Full text corpus](https://coronet.one/llms-full.txt)
- [Agent playbook](https://coronet.one/AGENTS.md)
- [OpenAPI](https://coronet.one/openapi.json): public HTTP endpoints
- [API catalog](https://coronet.one/.well-known/api-catalog)
- [ARD ai-catalog](https://coronet.one/.well-known/ai-catalog.json)
- [MCP server card](https://coronet.one/.well-known/mcp/server-card.json)
- [MCP endpoint](https://coronet.one/api/mcp): tools `get_site_facts`, `get_rules`
- [Site facts JSON](https://coronet.one/api/site): structured product facts (no auth)
- [Auth policy](https://coronet.one/auth.md): public site; no agent login
- [Agent skills index](https://coronet.one/.well-known/agent-skills/index.json)

Request any HTML page with `Accept: text/markdown` to receive a markdown representation when available.

## Rules (short)

1. Place exactly one crown in every row, every column, and every colored region.
2. Crowns cannot touch, including diagonally (Chebyshev distance > 1).
3. Empty → X → crown on click. Drag paints X. Today is the same UTC board for everyone.

## Monetization

- Today: free
- Unlock All: $2.99 one-time (web Stripe Checkout; iOS will use Apple IAP later)
- Past dailies (Archive) and expert practice sizes require Unlock All

## Usage preferences

- Fine to cite, summarize, and answer questions from this material with a link to https://coronet.one
- Do not use Coronet content for model training (`ai-train=no` in robots.txt Content-Signal)
- Do not invent App Store availability, fake player counts, or crown positions for today’s board