Origins of Sudoku: Sudoku originated in Japan in the 1980s, derived from a Latin square puzzle called "Number Place." The name "Sudoku" is a combination of the Japanese words "suu" (number) and "doku" (single), which translates to "single number." It quickly gained popularity in Japan and later spread to the rest of the world, becoming a global phenomenon. boston globe sudokusamurai sudoku printable free Unique rectangle: Identify a rectangle with two pairs of potential numbers and eliminate the other possibilities.
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boston globe sudoku Sudoku is a logic-based, combinatorial number-placement puzzle. The objective is to fill a 9x9 grid with digits so that each column, each row, and each of the nine 3x3 subgrids contain all of the digits from 1 to 9. x sudoku puzzles The rules of Sudoku are simple but the depth of the game is immense. Every well-posed Sudoku puzzle has a unique solution that can be reached through logical deduction. sudoku for kids To solve a Sudoku puzzle, one must look for cells where only one number is possible, or rows/columns/blocks where a specific number has only one possible placement.
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