Most of any sudoku is solved with two deductions: the naked single and the hidden single. They place more digits than every advanced pattern…
Read moreThe X-Wing is the first advanced sudoku pattern most solvers learn, and it is the gateway to the wider family of “fish” techniques. It…
Read moreSudoku is a logic puzzle played on a 9×9 grid. There is no math and no guessing involved — just one simple rule and…
Read moreSometimes you want to solve away from a screen — on a train, over coffee, or with a pencil and a cup of tea.…
Read moreSudoku looks like a math puzzle because it is full of numbers, but the numbers are just symbols. The sudoku rules are short enough…
Read moreEvery standard sudoku has exactly one solution that can be reached by logic alone. You never need to guess. The skill is knowing which…
Read moreEvery version of sudoku rests on the same idea. You fill a grid so that no symbol repeats inside a row, a column, or…
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