One bowl. Take some scoops — but never more than double what your opponent just took. Whoever takes the last scoop wins.
This is Fibonacci Nim. One bowl, players alternate taking scoops, and whoever takes the last scoop wins.
Your first move can't clear the whole bowl. After that, you may never take more than double what your opponent just took —
take too greedily early and you'll hand them room to sweep the rest.
Computer plays perfect strategy. If a bowl happens to be mathematically unwinnable from the start, use "New bowl" before your first move — it won't cost your streak. You can click it as many times as you like until you get one you're happy with.