Originally posted by tomtom232 I always wondered about these proof games..is there always only one answer or can there be multiple answers?
EDIT: In other words, there are mate in x problems where you can mate in x moves in y different ways...are there some proof games like this? Or does that defeat the purpose?
There are proof games with more than one solution, but that should be part of the stipulation. If the stipulation does not mention multiple solutions then there must be only one solution.
This is true not only for proof games but for all types of chess problems.
Example of a multiple-solution PG:
Problem Observer, 1995
Proof game in 6.5 moves (3 solutions)
Which means: find 3 ways to reach this position after White's seventh move.