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sudoku most difficult 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 boston Sudoku competitions are held globally, where speed solvers compete to finish complex grids in the shortest time possible. when was sudoku invented There are several difficulty levels in Sudoku, ranging from easy for beginners to expert for seasoned players. Solving techniques include scanning, cross-hatching, and identifying candidate numbers.

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