In order to make things easier, the program shows unfinished lines in the player's color. Often you just want to extend your own lines, but sometimes it can be better to cut your opponents short! It is all allowed. The computer players are strictly programmed to maximize the number of points you have, except when there are only two players. You can start a new game with different settings by pressing new game.
The AppletThis computer version is made by Sieuwert van Otterloo.
Advanced feature: If you would like to know how the computer evaluates the current position, open the java console. You see a printout of the expected length of lines for each open tile.