Originally posted by royalchickenThis sounds like the most miserable sort of puzzle imaginable.
You're given a 9x9 grid, which is further divided into 9 3x3 grids. Some of the cells contain numbers from 1-9. Your task is to insert digits such that every row, column, and 3x3 grid contains each digit exactly once.
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Originally posted by DoctorScribblesClarify what you mean by miserable; I think they may actually appeal to you. It's actually really cool for several reasons. First, it's a completely about maintaining consistency, second, it can be solved by deduction alone but can be solved more efficiently by a combination of deduction and making guesses and accumulating evidence. Third, very small changes in the initial configuration can drastically affect the difficulty of the puzzle.
This sounds like the most miserable sort of puzzle imaginable.
I just did the 'fiendish' one from the Times. Props can be supplied by PM 😛.
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Originally posted by DoctorScribblesFunny you mention it; I had to analyse the 15 puzzle in a linear algebra problem sheet a while ago. It's one thing to, say, tell whether a given configuration is possible. Actually doing the thing is quite another; I seem to recall getting one for Christmas a while back and being frustrated, because I'm very bad at giving up on that sort of thing.
The act of solving one would leave me in a state of misery, characterized by headaches, dizziness and general nausea. It sounds like the 15 sliding squares puzzles. I get sick just looking at those.