On the Subject of Cruel Karnaugh Map

This is the real Karnaugh map.

• The module shows a screen, a 9×9 grid, six numbered buttons, a green button in the top left corner, and a red button with a number on it.
• This module works identically to Karnaugh Map.
• The differences are the amount of variables and the requirement for an optimal solution.

6-variable variant and its groups:

Blue cells contain standard variables. Red cells contain inverted variables.

Optimal solution requirement:

The number on the red button tells how many digits you can enter. If submitted solution is correct, module will solve. Otherwise, if the submitted solution is incorrect or one of the submitted groups has duplicate digits, the module will strike.

Note: It is rare but still possible to find a solution that leaves extra digits to input.