[nonsequitur]

There's no assignment to the „m“ variables that would make your algorithm work in the general case.

im4w1l's strategy is just:

Player i returns (i - [Sum of the other players' suits]) % 4

(With i ranging from 0 to 3)

[josefdlange]

`m` is the result; this scratch here is meant to resemble algebra, not programming.

You know, solve for `m`, etc.

[josefdlange]

But the subtraction is simpler. I didn't want to confuse anyone with moduloing a negative number.