[Gemma]

Ok, some super-crazy combinations here. I've not worked them all out and I'd advise you to probably set everything to YES then let your members switch off as desired. Here are the queries I managed to determine.

Everything to YES

UPDATE `user` SET `arcadeoptions` = '1023'

Allow Challenges set to YES

UPDATE `user` SET `arcadeoptions` = '1'

Allow Challenges and Auto-Accept set to YES

UPDATE `user` SET `arcadeoptions` = '3'

Allow Challenges, Auto Accept, Email Notification and Tournament Events

UPDATE `user` SET `arcadeoptions` = '519'

Allow Challenges, Auto Accept, Use Email, Use PM and Tournament Events

UPDATE `user` SET `arcadeoptions` = '527'

Allow Challenges, Auto Accept, Use Email, Use PM, High Score Beaten, When Challenged and Tournament Events

UPDATE `user` SET `arcadeoptions` = '575'

Everything EXCEPT Email Notifications Set To YES

UPDATE `user` SET `arcadeoptions` = '1019'