Snooker is a pool variant with 15 red balls, 6 colored balls and one white ball. The players must score one red ball (worth 1 point) and then a colored ball (worth 2-7 points), which is then placed back on the table. When all red balls are potted then the end-game is played where the colored balls must be potted starting with the lowest valued ball, the yellow ball, and finishing with the black ball. If you do a foul then the opponent gains a minimum of 4 points and up to 7 points depending on if you have played a higher valued ball wrongfully. The balls will be placed back on the table and you will need to repeat the play. By trapping the opponent into a situation where he cannot easily hit the desired balls you can gain a lot of points. Such a situation is called "snooker".