Snooker Rules: Why the Minimum Foul Is Four Points, and What a Free Ball Really Does

The values, and why the floor is four

Ball	Value
Red	1
Yellow	2
Green	3
Brown	4
Blue	5
Pink	6
Black	7

A foul concedes a minimum of four points, or the value of the ball involved if that is higher.

Four is not arbitrary. It is the value of the brown, and it means fouls involving the yellow, green or brown all cost the same. Below the brown, the penalty stops tracking the ball.

The effect is that no foul is cheap. Without a floor, a player could concede a two-point yellow foul deliberately as a tactical escape, and safety play would collapse into cheap surrenders. The minimum makes every mistake cost at least a colour worth having.

A free ball is not a free shot

The free ball is snooker’s most misunderstood rule, and the misunderstanding is about scoring, not about when it is awarded.

If a foul leaves the incoming player snookered on the ball they should be able to play, they receive a free ball: they may nominate any ball as the ball on.

The scoring is the clever part. The nominated ball counts as the value of the ball that was actually on.

So if reds are on and a player nominates the black as a free ball, potting it scores one, not seven. The free ball restores their opportunity, not their potential.

That distinction is the whole design. A player fouled into a snooker should not be worse off — but neither should the offender’s mistake hand them a windfall.

The maximum is 147, and the arithmetic explains the sport

A maximum break is 147:

Fifteen reds, each followed by a black — 15 × (1 + 7) = 120. Then the six colours in sequence — 2 + 3 + 4 + 5 + 6 + 7 = 27.

That sum reveals the structure of snooker. Reds are individually worthless; their function is to earn access to a colour. The scoring engine is the black, returned to over and over, and a break is really a sequence of trips to the same corner of the table.

A player who pots fifteen reds and fifteen blues scores 90 instead of 120. The rules do not require the black — they simply make it the correct choice every time, which is why breakbuilding looks so repetitive to a newcomer.

The re-spotted black

If scores are level with only the black remaining, it is re-spotted, and the first player to pot it — or force a foul — takes the frame.

This is a tiebreak that is unusually true to the sport. It does not switch to a different skill or a shortened format. It plays one more shot of exactly the same game, on the highest-value ball.

Compare judo refusing to settle Golden Score on penalties and Olympic hockey refusing a shootout for gold. Snooker reaches the same conclusion: the decider should be won at the table, not awarded by a rule.

Safety is a scoring strategy

Because fouls concede points, snooker contains a full second game inside the first: not potting, but leaving the opponent unable to pot.

A player who cannot make a break can still win by forcing errors, and each error is worth at least four. The minimum foul value is what makes that viable — with a one-point floor, safety would be nearly costless to escape.

So one small number, chosen to match the brown, produces an entire strategic dimension. More rulebook coverage is in rules and techniques.