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The 2-Minute Rule for sudoku hard - hard sudoku

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Quads are much rarer, and they’re much less beneficial in a means considering the fact that they don’t let you slim down a large number of candidates abruptly, but when you see a single, it’s worthy of investigating. Solving single squares also can switch quads into triples or pairs, so https://heinzc087ael8.dreamyblogs.com/profile

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