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by anthonyb 4934 days ago
Hmm, well that's not how we played it - the cards incremented, not numbers themselves.

The rules went something like: when you play 'X', then all cards are incremented by 1. Kings are 13 and wrap around to Ace, which is 1.

The second rule would have been, say, all primes are spades, so King + 2 would be 2, which is prime. King of clubs on a three of hearts... perfectly legit.