Make 8 balls into your chosen pocket. The break shot is designed to leave balls near your pocket and leave the cue ball in a position to make balls, but leave no shot for your opponent. Similarly, when shooting directly or by banking, you have to be mindful, should you miss, you don't leave the cue ball in a position for your opponent to have an easy shot. Hopefully when you make a ball you also succeed in positioning your cue ball in a position for a follow up shot. Sometimes it pays to go ahead a knock one of your opponents balls in their pocket, leaving the ball near their pocket and no shot on more. Positionally, it also pays to take a foul, to leave them in a bind where they have to shoot something difficult. You lay a penny near your hole showing you owe one. Three consecutive fouls and it's loss of game. But pennies can still stack up by making a legal hit, then fouling again. Very much a positional and strategic game.