On the Subject of Permuto

The communicator took the day off.

The module displays a number, two buttons that read “NEXT” and “READY”, and five colors underneath.

Initially, the module displays a permutation of five colors. The number on the display shows how many colors are in their correct positions for the current permutation. Pressing NEXT will show the next permutation, looping back to the first one if you get to the end.

The goal of Permuto is to find the only permutation that satisfies every condition in the input.

When you believe you have found the correct permutation, pressing READY will clear the display, change the READY text to SUBMIT, and enables the input mode. If you need to review the inputs, simply press the NEXT button instead of submitting. In input mode, you can rearrange the colors to form your answer:

• Click one color to select it.
• Click a second color to swap it with the first in your input.

When you’re ready, press SUBMIT to submit your current permutation.

• If you submit the correct permutation, the module will disarm.
• If you submit an incorrect permutation, the module will strike. No feedback will be provided on the submitted permutation.