395 books • 47 series
Logical book. Killer sudoku. Chain puzzles. Medium - hard levels. (Killer Sudoku and His Friends, #39)
Logical book. Killer sudoku. Chain puzzles. Hard - extreme levels. (Killer Sudoku and His Friends, #40)
Logical book. Killer sudoku. Chain puzzles. Easy - medium levels. (Killer Sudoku and His Friends, #38)
Logical book. Killer sudoku. Chain puzzles. Hard levels. (Killer Sudoku and His Friends, #36)
Logical book. Killer sudoku. Chain puzzles. Extreme levels. (Killer Sudoku and His Friends, #37)
Logical book. Killer sudoku. Chain puzzles. Medium levels. (Killer Sudoku and His Friends, #35)
Logical book. Killer sudoku. Chain puzzles. Easy levels. (Killer Sudoku and His Friends, #34)
Logical book. Killer sudoku. Chain puzzles. All levels. (Killer Sudoku and His Friends, #33)
Logic puzzles book. Jigsaw Killer and Challenging Calcudoku sudoku. (Sudoku and Large Size Puzzles, #36)