Vassal is a free piece of software that enables players to play each other either live online or turn by turn using emailed log files that you step through and interact with. You can also use it to play games solitaire, as I do when playing solitaire ASL, and games that were designed to be solitaire such as B-17: Queen of the Skies, Silent Victory, etc. Having the game set up on the computer means that I don't have to worry about my other half or the animals messing up the board, plus I can take it with me on the laptop or on a pen drive, and could email turns to myself for use at work etc.[/url]