Stephen - I think your 50-60 second rule is good. I have solved several puzzles in under 120 seconds (especially the new 4x4s) and have never cheated. I consider myself to be a very fast solver, but it boggles my mind how any puzzle could legitimately be solved in less than 1 minute. I know there are some out there who are faster than I am, but it seems like even clicking the answers would take at least that long without even reading clues. Thanks for your efforts!
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