The game could use a better definition of what constitutes a pattern.
> A pattern is a sequence of pebbles repeated three times in a row.
By that logic, player 2 would have lost at their fifth turn. ... And 'in a row' is open to interpretation since it is additional information to 'repeated three times'.
I think it's pretty clear that a string s of pebbles is a pattern iff there exist strings x and y such that s = x|y|y|y, where | denotes string concatenation and y is nonempty.
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The game could use a better definition of what constitutes a pattern.
By that logic, player 2 would have lost at their fifth turn. ... And 'in a row' is open to interpretation since it is additional information to 'repeated three times'.
I think it's pretty clear that a string s of pebbles is a pattern iff there exist strings x and y such that s = x|y|y|y, where | denotes string concatenation and y is nonempty.
EDIT: Clarify that only y is nonempty.
I was confused also. My guess was that maybe a “sequence” has to be 4 or more pebbles?