This is a simple Chess game that I wrote on a whim one day. It took me 3-4 hours in total.

• Fully-functional* 2-player Chess game.
• Check and checkmate detection.
• Permitted moves highlighted in red.
• Supports unlimited "undo" actions (right-click to undo).

^{* Some obscure rules not currently supported - see todos.}

• Implement "en passant" rule.
• Implement stalemate detection:
  • Not in check, but no legal move.
  • If the same game layout occurs 3 times.
  • If no captures are made or pawns are moved for 50 turns.
• Display a message when the game ends.
• Display a message when getting a promotion.
• Display a message when in check.
• Implement AI!
• Button to reset the game.
• Custom icon.
• Configurable window size.
• Give all pieces a grey outline?