Stones and first move apply from the next game.
Two rows of six pits, with a store at each end. The row nearest you is yours, and so is the store on your right. Collect more stones in your store than your opponent.
Tap one of your pits. Its stones are picked up and dropped one at a time into the next pits, going counter-clockwise: along your row, into your store, then along the far row. Your opponent's store is skipped.
If your last stone lands in your store, you go again.
If your last stone lands in an empty pit on your side and the pit opposite has stones, you take that stone and all the opposite stones into your store.
When all six pits on one side are empty, the game ends. Each player adds the stones left on their own side to their store. Most stones wins.