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.


Grid Controls

Click the Read/Swap button to switch between modes.
In Read mode:

  • Click a card and type 1-15 on your keyboard to enter the number.
  • Selection advances automatically or by pressing [Space] or [Enter]
  • If on mobile, you can use Swap mode to put the cards in order for stage 0.

In Swap mode:

  • Click a card to select it as the first of the pair to be swapped.
  • Click outside the grid or on the same card to cancel.
  • Click a second card to swap.
  • Save after every swap to preserve the stage number and each action taken at each stage.

Use the - and + buttons or press [-] and [+] to increment the stage number.

Using the other buttons, you can save the current state of the grid (increments stage number), replace a selected save, reset the grid, delete the saves, delete saves after a selected one, or reset everything.