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by kazinator
1356 days ago
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> New strategies are discovered I highly doubt it. In Sudoku, it is either logically deducible that a particular value is to be placed into a given square. Or else it isn't; one can deduce that one of several values can be placed there, after all other exploration elsewhere has been exhausted. Deducing what can be placed into what square is a simple elimination. If the square is in a row that already has 7, 7 cannot be placed there. If it's in a 3x3 square that has 5, 5 cannot be placed there. If it's in a column that has 4, 4 cannot be placed there. For every square of the Sudoku board, we can do this evaluation. We hit upon a square where all values are eliminated but one, and so that one is confirmed. Based on that confirmation, we can update the other eliminations and keep going. When this process cannot continue, there is no choice but to guess. OK, here we can have a 7 or a 4, and so it goes. I don't see how you can pretend to have some strategies here, let alone ones with pet names and all. People have different systems for tracking the information, to be sure. |
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