Looking for a different kind of Sudoku challenge? Then try this third volume of 3D Sudoku! These 101 Jumbo 3D Sudoku puzzles solve just like regular Sudoku puzz

3D Sudoku is the ultimate challenge for an fan of Sudoku puzzles. With three times as many numbers than normal Sudoku, follow the colored lines and complete the

An eye-opening adventure deep inside the everyday materials that surround us, from concrete and steel to denim and chocolate, packed with surprising stories and

Featuring a huge number of Killer Sudoku Zero puzzles, all carefully sorted into order of increasing difficulty, this unique collection of 200 puzzles is full o

Simple Cross Number is constructed on a crossword grid just like a standard crossword, but the digits 1 to 9 are used instead of the letters of the alphabet. In