6Looking for a new Sudoku challenge? Then try 3D Sudoku! These 101 Jumbo 3D Sudoku puzzles solve just like regular Sudoku puzzles, but now each 3x3 box is written on the face of a cube and the rows run in all different directions, bending back and forth with the contours of the stacked cubes. Perfect for Sudoku solvers of all skills, the puzzles are arranged in increasing order of difficulty throughout the book, but all of the puzzles are designed to be solved by simple logical deduction - absolutely no guessing is ever required! For more books of Sudoku variants, visit www.PuzzleBooks.org.