This is a variation of Sudoku with a new added restriction. In Sudoku, there is a grid of 9 by 9 squares, the grid is further divided into 9 3 by 3 areas. The object of the game is to fill each square with a number from 1 to 9. The numbers in each row and column must not repeat, and so are the numbers in each of the 3 by 3 areas. In Odd Even Sudoku, some squares are highlighted. There are two types of highlights indicating that the square must be filled by either an odd number or an even number. This new restriction adds a new dimension to the game. Try to make sure of all the clues to fill in the grid as soon as possible. The faster you finish, the higher your rank.

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