This is a one player card game. When you click (or hit space bar), the "Scratch Cat" turn up a top card of the deck. Simultaneously, he counts a number. He counts like "1, 2, 3 ...11, 12, 13". When he counts 13, he re-counts form 1. If he says a number that is a value of a top card, game is over. The ranking from low to high is A-2-3-4-5-6-7-8-9-10-J-Q-K. I learned this game at japanese puzzle magazine "Nikoli", in 1988. On this magazine, this game is named "Kazoeru Dake (Just Counting)". I hope you enjoy.