DominionStrategy Wiki
QuoteSort-of. The self-referential aptitude test can be solved without assuming a unique solution, but doing so makes it easier to do so (I think you shave about 3 steps off the logic).This can also be applied to some Suduko puzzles. I don't know if it is definite rule of Suduko puzzles that they must have a unique solution but it makes sense to publish solutions that are unique.
Sort-of. The self-referential aptitude test can be solved without assuming a unique solution, but doing so makes it easier to do so (I think you shave about 3 steps off the logic).