TheMaka already answered this specific case and there is indeed nothing technically "banned" in competitive SC2. BW however did have a few bugs that were banne

TheMaka already answered this specific case and there is indeed nothing technically "banned" in competitive SC2. BW however did have a few bugs that were banned by tournament ogranizers [1]. [1] http://wiki.teamliquid.net/starcraft/Competitive_Rules http://wiki.teamliquid.net/starcraft/Competitive_Rules