Sudoku 365 Game

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Game Description:
Sudoku 365 - You are given a 9x9 grid with some cells already filled in. Fill in the grid by clicking on the bottom half of a cell to change its value. Each square of 3x3 must contain the numbers 1 to 9 but only once. Each row and column must contain all the number 1 to 9 but each number can only appear once in each row or column. To help you sole the puzzle you can type in up to 6 possible numbers in the top of each cell.