Chess.

DEMO

Features:

• Written in ruby
• Runs in browser using Opal
• Highlight valid moves.
• Follows the shades of chess rules:
  • En-passant capture
  • Pawn promotion
  • fifty-move rule
  • Castling through check
• PGN and FEN notations output
• Import game from FEN string

Run localy:

$ git clone git@github.com:ll14m4n/chess-opalrb-example.git
$ cd chess-opalrb-example
$ bundle install 
$ bundle exec rackup

Open localhost:9292