Every Trividoku™ Sudoku puzzle has sets of nine matching Trivia clues. Match them up to find the missing digits in the puzzle.

Don’t know the Trivia? Don’t worry- most of the puzzles can be solved without the Trivia; they’re just harder to solve that way.

The 101 puzzles in this book range from simple to fiendish. In the fourteen Triple Trivia challenges you are given three different sets of nine trivia matches. And in the Thunder Brain challenges, there may be as few as TWO digits filled in.

It's the new wave of Sudoku.

Stars & Stripes is a 12 x 12 Sudoku variant where each row, box and column has the normal 1 – 9 digits, and also has three stars. Every Sudoku enthusiast will enjoy this new look on Sudoku. In addition to the 100 Stars & Stripes puzzles, we’ve also included five Trividoku Sudoku Trivia puzzles and six Sudoku Island puzzles.

Chart yourself a new course of Sudoku.

In addition to the normal 9 x 9 Sudoku puzzle, Sudoku Islands and adds four Islands to each puzzle. The islands float on top of the grid with each Island also having 1 – 9.

Puzzles range from easy warm-ups to fiendishly difficult.

The second Trividoku book combining Trivia and Sudoku. The book also contains a selection of bonus puzzles.

Break new ground in your Sudoku journey.

Sudoku Earthquake starts off like regular 9 x 9 Sudoku but gains the fault line - an extra line of digits crossing the puzzle.