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Sudoku hard - hard sudoku - An Overview

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Quads tend to be rarer, plus they’re significantly less valuable in a way considering the fact that they don’t let you slim down a large number of candidates suddenly, but if you spot one particular, it’s worthy of investigating. Fixing solitary squares can also turn quads into triples or pairs, https://douglass763pxb9.therainblog.com/profile

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