On the Subject of Tau
It’s equal to pi, multiplied by two. But it has half of the legs in its symbol? The tau is a lie!
See Appendix τ for tau identification reference.
A Tau module shows five letters that correspond to a sequence of six digits within tau (τ). The letters must be decrypted to find the sequence which must be modified to determine the order of pressing the buttons.
Convert all letters to their alphabetic positions (A=1, B=2, etc.), with the exception of Z being 0. Multiply the first number by 26, then add the second number. Multiply this result by 26, and add the third number. Repeat this twice more with the fourth and fifth numbers. Take the last six digits of this result.
Find this string of digits within tau, and obtain the next six digits to get a new sequence of six digits. However, if there is a Pie module present, obtain the six previous digits instead. If there is a Pie Flash module present, reverse the obtained sequence. You will never need to wrap around when continuing the sequence.
For each pair of adjacent digits, take the last digit of their sum, and concatenate them to form one five-digit number. Associate these with the five letters on the module.
Press the digits in the order they appear in tau, starting with 6.28. If any digits are equal, press them from left to right, but do not press repeated digits until you have reached the next occurrence of that digit in tau.
For example, if the digits are 81338, the positions to press in order would be 13254.
If an incorrect letter is pressed, the module will strike immediately, but the letters and solution will not change.