Do you like to play sudoku? what about the extremely difficult sudoku? If you are tired of easy sudokus, this sudoku is for you.

Who doesn't love sudoku puzzles? it's one of the best ways to train the brain, but simple level sudoku can be a bit boring. How about pushing the limits of your mind with "Extreme Difficult Sudoku 2500"? Over 2500 extreme hard sudoku in 5 categories are waiting for you.

Choose sudoku puzzles from Normal, Cross, Jigsaw, Cross Jigsaw, and Inequality categories, and get ready to train your brain!

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