145 books
Sujiken Sudoku Level 5
Twodoku Double Sudoku 6 x 3 Overlap Level 1
Skyscraper Sudoku Level 3
Triple Doku Sudoku 3 Grids Two 6 x 6 Overlaps Level 1
Tripod Sudoku Level 3
Sujiken Sudoku Level 4
Greater Than Sudoku Level 5
Greater Than Sudoku Level 4
Even Odd Sudoku Level 4
Greater Than Sudoku Level 3
Even Odd Sudoku Level 3
Windoku Four-Box Sudoku Level 4
Even Odd Sudoku Level 2
Greater Than Sudoku Level 1
Windoku Four-Box Sudoku Level 2
Even Odd Sudoku Level 1
Sudoku X Level 5
Asterisk Sudoku Level 4
Sudoku X Level 4
Sudoku 15 x 15 Level 5
Sudoku X Level 3
Sudoku 15 x 15 Level 4
Argyle Sudoku Level 4
Sudoku 15 x 15 Level 3