Argyle Sudoku - Easy to Extreme - Volume 1 - 276 Puzzles
Hidoku Mixed Grids - Medium - Volume 3 - 156 Logic Puzzles
Sudoku 15x15 - Hard - Volume 25 - 276 Puzzles
Daily Tridoku Puzzle Calendar 2015
Killer Sudoku 9x9 Large Print - Easy - Volume 25 - 270 Logic Puzzles
Mega Sudoku 16x16 Large Print - Medium - Volume 58 - 276 Logic Puzzles
Anti-Knight Sudoku 10x10 - Easy to Extreme - Volume 2 - 276 Puzzles
Hoshi Sudoku - Hard - Volume 4 - 276 Puzzles
Killer Sudoku 12x12 - Easy to Hard - Volume 13 - 276 Puzzles
Flower Sudoku Deluxe - Easy to Extreme - Volume 7 - 468 Logic Puzzles
Daily Mega Sudoku 16x16 Puzzle Calendar 2015
Killer Sudoku 12x12 - Easy - Volume 14 - 276 Puzzles
Minesweeper Mixed Grids - Hard - Volume 9 - 159 Logic Puzzles
Sudoku 15x15 Large Print - Easy to Extreme - Volume 27 - 276 Puzzles
Numbricks Mixed Grids - Easy - Volume 2 - 276 Puzzles
Sudoku X 16x16 - Easy to Extreme - Volume 5 - 276 Puzzles
Killer Sudoku 9x9 Large Print - Easy to Hard - Volume 5 - 270 Puzzles
Hoshi Sudoku - Easy to Extreme - Volume 1 - 276 Puzzles
Large Sudoku 12x12 - Hard - Volume 18 - 276 Puzzles
