Hidoku Mixed Grids - Easy to Hard - Volume 1 - 156 Puzzles
Hidoku Mixed Grids - Hard - Volume 4 - 156 Logic Puzzles
Hidoku Mixed Grids - Easy - Volume 2 - 156 Logic Puzzles
Hidoku Mixed Grids Deluxe - Easy to Hard - Volume 5 - 255 Logic Puzzles
Hidoku Mixed Grids - Medium - Volume 3 - 156 Logic Puzzles
Anti Diagonal Sudoku 16x16 - Easy to Extreme - Volume 2 - 276 Puzzles
Shikaku Mixed Grids - Hard - Volume 4 - 159 Logic Puzzles
CalcuDoku For Kids Mixed Grids - Easy to Hard - Volume 1 - 145 Puzzles
Hitori 30x30 - Volume 3 - 159 Logic Puzzles
Anti-King Sudoku 12x12 - Easy to Extreme - Volume 3 - 276 Puzzles
Star Sudoku Deluxe - Easy to Extreme - Volume 7 - 468 Logic Puzzles
Consecutive Sudoku - Medium - Volume 3 - 276 Logic Puzzles
Killer Sudoku 12x12 - Medium - Volume 15 - 276 Puzzles
Hoshi Sudoku - Hard - Volume 4 - 276 Puzzles
Killer Sudoku Mixed Grids Deluxe - Easy to Hard - Volume 24 - 474 Puzzles
Minesweeper Mixed Grids - Medium - Volume 8 - 159 Logic Puzzles
Killer Sudoku 9x9 Large Print - Easy - Volume 25 - 270 Logic Puzzles
Sudoku X 9x9 Deluxe - Hard - Volume 11 - 468 Logic Puzzles
Sudoku Travel Pocket Size Book 5 - 120 Extreme Logic Puzzles For On-The-Go Holiday Fun
Flower Sudoku - Easy - Volume 2 - 276 Logic Puzzles
