Note that the legality of a cycle does not depend on where it started. See Rules Beast 1 for a case where unsound superko variants fail.
To not only have a sound end but also a sound result, proceed as follows:
- If the last move was not a pass, continue the cycle until it is.
- Apply the regret clause of the repeated-pass rule, in other words, let the fool lose if the cycle was a foolish one.
- If still undecided, score.
P.J.T.: Could you please include in this page an indication of where this terminology originates and who uses it?
Robert Pauli: It's my invention.