So it tells me my score is 75. But what does that mean? The statistics it should give me in the end is how many I got right and how many I got wrong. Obviously the strategy is to guess higher if you get A-6, guess lower if you get 8-10 or a face card, and either way if you get a 7. Statistically, if you do that, you should (since it apparently counts a tie, receiving the same card twice in a row, as a success, presumably whether you guess higher or lower) succeed 13 times out of 13 on A or K, 12/13 on 2/Q, 11/13 on 3/J, 10/13 on 4/10, 9/13 on 5/9, 8/13 on 6/8 and 7 times out of 13 on 7, making for a total chance of 133/169 or 78.7% of being right on any turn. Meaning on the 51 transitions to the next card, on average you'll get 40 of them. But this score of 75? WTF does that mean? It's as meaningless as a power level of over 9000. There's no units, there's no meaning, if it's just a number like that on its own.
But I guess the program does its thing and accomplishes what it was set out to do. Which isn't very ambitious.