9. ARTIFICIAL INSETS ON THE GREEN (RULE 24-2)
The artificial insets are classed as an ‘obstruction’ within the rules of Golf 24-2 Immovable Obstructions as follows:
(a) Interference by an immovable obstruction occurs when a ball lies in or on the obstruction, or when the obstruction interferes with the player’s stance or the area of his/her intended swing. If the player’s ball lies on the putting green, interference also occurs if an immovable obstruction on the putting green intervenes on their line of putt. Otherwise, intervention on the line of play is not, of itself, interference under this rule.
(b) Relief: If the ball lies on the putting green, the player must lift the ball and place it, without penalty, at the nearest point of relief that is not a hazard. The nearest point of relief may be off the putting green as provided in Rul2 24-2 (iii).