The World Snooker Championship is famed for its longevity, with the winner needing to come through 17 arduous days of action and win a total of 71 frames to be crowned the king of the Crucible.
We take a look at how many frames feature in individual matches throughout the competition as well as details of how many frames take place in a single session of play.
Following the same match length as the four World Snooker Championship qualifying matches, first round encounters at the Crucible are played over a best-of-19 format, meaning players have to secure ten frames to advance to the next round.
The eight matches played in the second round of the World Snooker Championship are contested over 25 frames, with the victor being the player who reaches 13 frames first.
Quarter-final matches are played over the same match length of those in the previous round, best-of-25 frames, before expanding further in the semi-finals.
The most significant jump of the competition takes place between the quarter-finals and the semi-finals, with the two last four showdowns being contested over 33 frames.
That means the two winners will be the players who notch up 17 frames first.
An additional two frames are added to the final, meaning the tie takes place over a best-of-35 frame format, with the winner being declared after securing a total of 18 frames.
In the current format, a player will need to chalk up 71 frames to be crowned World Snooker Champion.
Kyren Wilson was the most recent player to do that en-route to his maiden Crucible crowning glory 12 months ago, winning 71 of the 111 frames he took part in across the event.
The 71 frames are made up by 10 in the first round, 13 in the second round and quarter-finals, 17 in the semi-finals and 18 in the final.
Every single match played at the World Snooker Championship will be contested across at least two sessions.
Matches in the first round feature two sessions, with the first being over nine frames, before playing out to a finish in the second (10 frames maximum).
Second round encounters and quarter-final ties are played over three sessions, the first two housing eight frames, before the third and final session, if needed, stages play until a winner is declared.
The two semi-finals and showpiece final then extend to four sessions, with eight frames taking place in the first, second and third of those, before the final session - often the most drawn out and dramatic with the winning line in sight - is played out until a winner is determined.
Mid-session intervals feature in every session of play at the World Snooker Championship, and take place once the first four frames have concluded.
At that point, players are allowed a 15 minute break in play to take in refreshments, regather their thoughts or spend a brief period of time on the practice table.
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