I left a note on the game.
1) Install the Makita battery
2) Push down hard in the center of each game board until it sticks.
3) Press Start. You have to beat the timer and the other player.
4) When you solve your side, press WIN. This causes the other side to pop and stops the timer.
5) The other player is locked out from doing that to you.
6) Press Reset. This allows both sides to pop.
7) Go to step 2
Remove the battery when you're done. Happy playing.