Left a single pin or a cluster? Use the interactive 3-6-9 spare guide below — tap the pins you left, choose your hand, set your hook, and it shows exactly how many boards to move your feet and rolls the ball down the line. Based on the USBC 3-6-9 spare system.
3-6-9 Spare Calculator
Tap every pin you left standing. The tool finds your key pin and shows how many boards to move your feet. Set your hook to see how a ball with revs curves into the pin.
Wood 39-board lane from your view. Arrows on boards 5-10-15-20-25-30-35.
For a cluster you aim at the key pin (front pin, ringed); the rest fall by deflection. Keep your strike target (about the 2nd arrow, board 10) and move only your feet — 3, 6 or 9 boards. The 3-6-9 board moves assume a straight ball: the cleanest spare play is a plastic ball thrown straight. If you hook, throw a straight spare ball, or aim toward your hook side so the ball curves back. Based on the USBC 3-6-9 spare system; fine-tune to your own walk and lane.