Logic & Lash Vol12: Evil's Third Strike: The Ultimate Collection of Evil Sudoku Puzzles

Logic & Lash Vol13: The Third Degree: Ultimate Evil Sudoku Challenge for Master Solvers

Logic & Lash Vol14: Unyielding Logic: The Ultimate Evil Sudoku Challenge for Adults

Logic & Lash 8: The Ultimate Sudoku Challenge: Evil Book for Adult Puzzlers

Logic & Lash 4: Wicked Cells: Evil Sudoku Books for Adults: The Collection