This is a PHP-based implementation of the popular Reversi strategy game, invented by Lewis Waterman in England in 1888; the standard modern version was developed by Goro Hasegawa, and this version is called Othello, which is a trademark of Tsukuda Original. The rules are available here.
The PHP script implements the board state and game rules, and optionally calls a separate server-side program to implement game strategy for the computer player.
Thanks to Jacques Gasselin de Richebourg for his C++ implementation of a depth-n minimax search strategy, licensed under GPL.
Requires JavaScript on your browser.
Yes, you can cheat with the `back' button... but why would you want to do that?