When I log in to the computer, big bang chess opens up and even if I force quit, regularyly quit or go to activity monitor and quit, it opens up again in 5 seconds. Why is this happening? What can I do?
If you have more than one account check in your Admin. or the other account, I'm thinking that "Open at Login" may have been selected at some point from the BB Chess icon on the dock.
Try starting up in safe mode by rebooting while holding the shift key down. If it boots without big Bang Chess opening then find the preference file for it and trash it. Empty the trash. After that reboot normally and repair the disk permissions.