Welcome, puzzle fans, to our newest invention as we combine everyone's favorite number puzzle with their childhood obsession - jigsaw puzzles! These sudoku puzzles have been cut into pieces, and it's your job to reassemble them. Play a new puzzle each and every day, then compare your best time with others' via Twitter.

From the list of puzzle pieces, tap the puzzle piece you want to place into the puzzle. Once it is confirmed selected, tap a spot in the puzzle where you want to place the piece. If it fits, it will be filled in; if not, you will be given a hint. Fill in all puzzle pieces as fast as possible, then announce your results via Twitter.

Master the standard puzzle (containing numbers 1-9) then consider upgrading to attempt the more difficult puzzles (up to 18 rows and columns in the iPad version).