Marty R. wrote:Steve I have no doubt that you're correct about the UR not being needed. I was not claiming that it was. The way I play, being terrible at chains, I avoid situations where I have to find a chain, because too often I end up in what I call "chain purgatory." So I always look for a pattern-based move. I checked the UR and used it because it can solve the puzzle. I used two chains, one for each DP killer because I was unable to find a single chain that worked. I frequently use URs or DPs. They are a treasure trove or mother lode for non-chain solutions.
Thanks Marty, great sudoku psalm.
