Hazel Irvine and Colin Murray reflect on 40 years of the snooker World Championship at the Crucible, Sheffield charting some of the incredible matches, memories and characters. Show more

Hazel Irvine introduces live coverage from the Crucible Theatre in Sheffield. Mark Selby begins the defence of the title as the climax to the snooker season gets underway. Show more

Hazel introduces live second-round action as players vie for places in the quarter-finals.

Another quarter-final spot is filled on day eight of the World Championship. Hazel Irvine introduces live coverage from the Crucible Theatre.

Live second-round action continues in Sheffield as two more best-of-25-frame matches get under way.

Hazel Irvine introduces live second-round action from Sheffield.

Live second-round action continues at the Crucible. Matches are the best of 25 frames and are played over three sessions. Jason Mohammad introduces coverage from Sheffield.

Continued coverage from Sheffield as players vie for quarter-final places. Two more matches reach their conclusions, with the first players to 13 frames moving into the last eight. Show more

Live coverage featuring the opening frames from the concluding sessions of the second-round matches. Hazel Irvine presents from the Crucible Theatre in Sheffield. Show more

It is quarter-finals day at the Crucible as the tournament enters its 11th day. Jason Mohammad introduces live coverage as the best-of-25-frame matches get under way.

Hazel Irvine introduces quarter-final action. The first two matches got under way on Tuesday morning. Matches are the best of 25 frames, played over three sessions.

Jason Mohammad presents live coverage from Tuesday's quarter-finals, where the difference between winning and losing is £37,500.

Live quarter-final action continues, with the first semi-final spot being decided on Wednesday morning. The first player to 13 frames moves into the last four. Show more

Hazel Irvine introduces action from Wednesday morning's quarter-finals before live coverage continues of the other last eight matches.

Jason Mohammad introduces live coverage from the concluding sessions of 2017's quarter-finals, with the first players to 13 frames moving into the last four.

We are down to one table as semi-final action gets under way. The matches are now the best of 33 frames, played over four sessions. Jason Mohammad introduces live coverage. Show more

The second semi-final gets under way on Thursday evening. Live coverage of the first eight frames is introduced by Hazel Irvine from the Crucible Theatre in Sheffield.

Live semi-final action continues with eight frames to be played in the best-of-33-frame match. Jason Mohammad presents coverage from Sheffield.

Hazel Irvine introduces semi-final action, with eight frames to be played on Friday afternoon.

Live action from the penultimate session of the first semi-final is introduced by Jason Mohammad in Sheffield, where the winner is guaranteed a minimum of £160,000.