1
Four cards are dealt face-up. Select one card, then select a second — the first card is placed on top of the second, covering it. A new card is dealt into the now-empty spot.
2
You score the difference in rank between the two cards. Ace = 1, Jack = 11, Queen = 12, King = 13. Bigger gaps score more — try to pair extremes like A and K, or 2 and Q.
3
The game ends when only one stack remains. Maximise your total score across all moves.
4
Par is a benchmark score set by a greedy computer. Beat it to finish ahead of par.