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Sudoku 2

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Description

Logic | Math | Puzzle | Sudoku

The rules to sudoku are very simple: fill in the grid so that every row, every column, and every 3x3 box contains the digits 1 through 9. There is nothing more to it!
Use the Hint button if you get really stuck. Select the square you need help on and click "Use Hint" to fill in the correct digit. You get up ot 3 hints per level.
There are 75 levels in total split up into the categories of Easy (1-25), Medium (26-50) and Hard (51-75). See if you can complete all the levels!
There is a timer, but no time limit so you can play at your own leisure or put yourself under pressure and challenge your friends. You can use the keyboard to select squares using the arrow keys and then type in the digit you want to place. 0 will set the square to empty. Or you can simply fill in the grid by selecting the squares.