Sudoku - 9x9, 6x6 and Killer Samurai Sudoku
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What is Sudoku?
Sudoku is a Number Puzzle that requires no mathematical knowledge. (no adding or multiplication). It is based upon Japanese style crosswords where you are required to use logic to place numbers onto a 9x9 grid.Rules
To solve the puzzle you must make sure that every column, row and 3x3 box contains the numbers 1 through to 9.
Almost all of the puzzles can be solved using logic alone and there is no need to guess. A puzzle can take from 20 minutes to 2 hours to complete depending on its level and your experience.
People have developed a range of methods and tactics in order to solve the puzzles.
Sudoku Solver
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