feat: SQL Chess — playable chess with SQL query panel, guest mode, invite links & GitHub Pages CI/CD

[Copilot]

Builds the entire SQL Chess application from scratch (repo was previously empty). Every chess move is translated into real SQL statements in real time, with an optional SQL panel alongside the board.

Core App

• index.html — single-page app: chess board, SQL panel, New Game / Guest / Invite modals, pawn-promotion dialog, toast notifications
• css/style.css — dark-themed responsive layout; board highlights (selection, valid moves, last move, check), SQL syntax colouring, modal animations
• js/app.js — chess.js engine integration, click-to-move with full rule enforcement (castling, en passant, promotion, check/checkmate/stalemate), SQL generation per move, invite URL encoding, undo/flip board
• vendor/chess.min.js — chess.js v0.10.3 vendored locally (no CDN dependency)

SQL Panel

Each move generates contextually correct SQL against a 3-table schema (chess_game, chess_piece, chess_move). Special moves get special treatment:

-- Capture: White pawn d4 ✕ e5
DELETE FROM chess_piece WHERE game_id = '...' AND position = 'e5' AND color = 'black';
UPDATE chess_piece SET position = 'e5' WHERE game_id = '...' AND position = 'd4' AND color = 'white';

-- Kingside castle
UPDATE chess_piece SET position = 'g1' WHERE ... -- king
UPDATE chess_piece SET position = 'f1' WHERE ... -- rook

Panel is toggleable; "Copy All" exports the full session SQL.

Guest Mode & Invite

• Guest mode — no login, click "Play as Guest" to start immediately
• Invite link — encodes full game state (PGN) as base64 in the URL query string; recipient opens the link and continues the exact same game

https://devn913.github.io/SQL_Chess/?w=Alice&b=Bob&sql=1&pgn=MS4gZTQ=

CI/CD

• .github/workflows/deploy.yml — validate job runs html-validate on every push/PR to main; deploy job publishes to GitHub Pages on push to main (requires Pages to be enabled in repo Settings → Pages → Source → GitHub Actions)

Screenshot

Warning

Firewall rules blocked me from connecting to one or more addresses (expand for details)

I tried to connect to the following addresses, but was blocked by firewall rules:

• cdn.jsdelivr.net
  • Triggering command: /usr/bin/curl curl -s REDACTED -o /home/REDACTED/work/SQL_Chess/SQL_Chess/vendor/chess.min.js (dns block)

If you need me to access, download, or install something from one of these locations, you can either:

• Configure Actions setup steps to set up my environment, which run before the firewall is enabled
• Add the appropriate URLs or hosts to the custom allowlist in this repository's Copilot coding agent settings (admins only)

Original prompt

Create a chess that lets you play chess, and in the right you will see a SQL Query, simply we will play chess with SQL. There's should be option to choose without sql as well. The chess should have option to play as guest, it can invite people and then when clicked it should generate a URL to invite. For now Integerate CI/CD and deploy it on github pages live