Snooker: World Championship2012Day 12, Part 3BBC Sport Duration: 1 hourFirst broadcast: Wed 2nd May 2012, 19:00 on BBC HDLatest broadcast: Wed 2nd May 2012, 19:00 on BBC Two EnglandLive coverage from the concluding sessions of 2012's quarter-finals, with the first players to win 13 frames moving into the last four.ContributorsPresenter:Hazel IrvinePresenter:Rishi PersadParticipant:Steve DavisParticipant:Ken DohertyParticipant:John ParrottParticipant:Stephen HendryCommentator:Neal FouldsCommentator:Terry GriffithsCommentator:Dennis TaylorCommentator:Willie ThorneCommentator:John VirgoGenresSportSnookerBrandSnooker: World ChampionshipSeriesSnooker: World Championship: 2012 Source: BBC Online