ICC News Item #1594
We discovered a serious bug in some versions of BlitzIn today. (We're still tracking down which ones.) In the interest of fairness we felt it was important to publicize this as widely as possible. The bug allows you to type "!takeback" into the main console, and your last move will automatically be taken back. This does not require your opponent to agree. :-( We apologize for any inconvenience. This will be fixed in the next BlitzIn release.