Feb. 22nd, 2006

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The (paranormal) magic of the Shadowrun RPG is not suited to duplicating many classical effects of stage magic, especially those that involve making things appear and disappear. There's no teleportation, unless you count a special ability possessed by a very small number of extremely overpowered NPCs and thought to be impossible by everyone else. You could use illusion, but that's not notably different from the way stage magicians do it.

In a Sudoku puzzle, what is the smallest number of "givens" that can appear while the puzzle still has a unique solution? Wikipedia tells me this is unsolved and the best anyone has done is 17. I can't find any proved lower bound, but it seems intuitive that 8 or fewer cannot possibly work, and last night it seemed plausible that 9 could. Now I'm not so sure.

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