520 books • 20 series
Interesting Puzzle - Futoshikidoku 9 X 9 + Sudoku Brickwalldoku 9 X 9 + Bonus (Pitstop Puzzle Bonus, #55)
SUDOKU Time - DoubleBlockDoku 7 x 7 + BrickWallDoku 9 x 9 + BONUS (Pitstop Puzzle Bonus, #53)
Fillominodoku - Without Rectangles - 12 X 12 + Trestlegdoku 12 X 12 + Bonus (Pitstop Puzzle Bonus, #49)
Mountains and Stars - Chinesewalldoku Puzzle 12 X 12 + Bonus (Pitstop Puzzle Bonus, #47)
Chic Puzzles Kuromasudoku 12 X 12 + Kakuro Very Hard 12 X 12 + Bonus (Pitstop Puzzle Bonus, #46)
Cool Book Sudoku -Very Hard- 250 Logical Puzzle + Bonus 250 Classic Killer (Pitstop Puzzle Bonus, #44)
Big Book Sudoku -Very Hard- 250 Logical Puzzle + Bonus 250 Classic Killer Sudoku (Pitstop Puzzle Bonus, #43)
World Riddles - Very Hard - 250 Logical Puzzle + Bonus 250 Classic Killer Sudoku (Pitstop Puzzle Bonus, #42)
Champion Fight -Very Hard- 250 Logical Puzzles + Bonus 250 Classic Killer Sudoku (Pitstop Puzzle Bonus, #41)