Welcome to this fantastic collection of 100 3D Sudoku Cubes! To solve these giant 3D sudoku puzzles, you will need to place each number from 1-8 (1-12 and 1-16 for the larger grids) exactly once into every region and bold lined boxes in the grid . The puzzles vary in difficulty level so once you feel confident enough to move from the 4x4 puzzles on to the 6x6, see if you can master the giant 8x8 grids featuring an impressive 12 sudoku faces. Solutions are featured towards the back of the book if you need a hint along the way or to check your finished answer once complete. Puzzles are printed on high quality white paper with plenty of solving room on an 8.5 x 11 inch page size. Good luck and happy solving!