WHAT IS AN X-O GAME?
The X-O game, also called "Five in a Row", is a strategic game which doesn't need any equipment, except a squared sheet of paper and pencil. Players alternate placing their signs ("X" or "O") into the squares. The winner is the first one with five signs in a row - horizontal, vertical or diagonal (both positive and negative slopes).

WHY AN "ARENA" FOR THE X-O GAME?
With evolving computer technology, computer programs prove themselves good opponents in many strategic games. The last human vs. computer chess championship (1999) indicates that it would make sense to equip the human with database access and computing power to equalize the chances of the opponents.

The era of humans playing strategic games against each other comes slowly, but inevitably, to an end. Now begins an era of competition, where the opponents are programmers battling vicariously through their programs for the win.

WHAT IS THE X-O GAME ARENA FOR?
The X-O Arena provides the appropriate environment for competing Java Script X-O implementations. Opponents can be any two files containing Java Script code (engines). There are some conditions these files must meet.