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#1: Tom O'Connell (sensei69) on Nov 2, 2013 [SPOILER]

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Found to be solvable with moderate lookahead by infrapinklizzard.

It doesn't seem as if Mary is checking her puzzles to see if they are logically solvable. Neither does she seem to be solving her own puzzles before posting them. She should do both being careful when she solves her puzzles to use just the clues and not fill in squares from memory. She has some cute ideas but so far most are not making very good puzzles.

AWE!

Found to be solvable with moderate lookahead by infrapinklizzard.

Here's a second puzzle that has un-solvabled itself.

Re: #2
What? You don't consider symmetry to be logical? I always just assumed symmetry to be one of the logical methods for solving these puzzles. If you understand the rules of symmetry, and how to identify symmetry, it is VERY much logical, just like with smile logic (really, another type of symmetry) and stair logic.

some thoughts on symmetry from another puzzle:

"So far as we know, symmetry logic probably holds if ALL the clues are symmetrical and there is only one solution. In that case, using symmetry is considered "cheating" only because there is no actual proof that it is true, just empirical evidence. (Also it's boring.)"

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