Sorry about that! You should be able to enter the sum of a snowball, which will appear at the bottom center as you type. Press "Enter" and any snowballs matching that value will disappear.
Viewing post in All Hail Arithmetic jam comments
Alright fear not, it does work now, you see, I had to toggle one of those stupid proprietary keys on my keyboard for some reason. Yeah I can successfully repel the onslaught of snow with the power of my top-of-the-line, genius math skills........ and by that I mean I still failed almost as fast as when I couldn't type anything, but this time it is definitely a skill issue, lol.