Your original fails in one case: 

/^(...)*(X|O)\2\2|(X|­O)(.{2,3}\3)\4|^..(X­|O).\5.\5/
#                       ^^^^^^   ^^

[download]
The parts above ^s are the problem. They require that, in a '.X..X..X.' type of solution that the two '..' parts be the same. So it won't match '-XO-X-OX-' even though it should.

                - tye

In reply to Re: tic-tac-toe regex golf (bug) by tye
in thread tic-tac-toe regex golf by barrachois

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