On the Subject of Concentration
Your focus determines your reality.
Take note of the order in which the numbers 1–15 appear on the cards. When the first module is solved, the cards will flip face-down.
After each solved module (including the first), two cards are swapped. You may tap any card at any time to see the swap again (but the cards do not actually swap back).
After every non-ignored module is solved, up to a maximum of 106, the LED turns on. Tap the cards in the order 1–15, taking all the swaps into account.