Ronnie O'Sullivan and Stephen Hendry share the record for the most maximum 147 breaks in World Snooker Championship history.
O'Sullivan's trio of 147s in the history of the tournament came following perfect breaks in 1997, 2003 and 2008.
Stephen Hendry, a seven-time world champion, is the only other player to record multiple perfect breaks at the Crucible. They came at the 1995, 2009 and 2012 editions of the World Snooker Championship.
A total of 15 maximum breaks have been hit in the tournament's history.
Cliff Thorburn was the first player to ever record one in 1983, doing so in a second-round match against Terry Griffiths.
There was then a nine-year wait for the second, with Jimmy White scoring one in 1992 in a first round meeting with Tony Drago.
Mark Allen was the most recent player to score a Crucible maximum, doing so in last year's tournament against Chris Wakelin.
Mark Williams, Ali Carter, John Higgins, Neil Robertson, Kyren Wilson and Mark Selby have also recorded perfect breaks at the tournament.
Any player hitting a 147 at this year's World Snooker Championship will win a cash prize of £40,000.
Of the 14 maximum breaks, the difference between players scoring them and going on to win, and going on to lose, is slim.
Eight of the 147s in Crucible history have led to victories, with the other six occasions being by players who would go on to lose.
The first four 147s, hit by Thorburn, White, Hendry and O'Sullivan, all came in victories.
The two most recent maximum breaks, scored by Selby and Allen, both came in losses.
Starting at the 2025 edition, the Midnite Maximum prize is awarded to a lucky member of the Crucible crowd if a maximum 147 break is hit during the World Snooker Championship.
At last year's tournament, a flat prize of £25,000 was awarded to spectator Brian Nicholls following Allen's perfect break against Wakelin.
This year the initiative has returned, but with a more staggered rate of distribution that increases throughout the tournament.
In the first round, a perfect break will win a fan £5,000 – doubling to £10,000 in the second round.
This jumps up in the quarter-finals to £25,000, emulating last year's prize fund.
In the semi-finals, it doubles again to offer £50,000 to a supporter if one is hit. This again doubles in the final to £100,000.
This article is the latest from BBC Sport's Ask Me Anything team.