Sudoku Level 19 Diabolical Series – Each Book contains Sudoku 480 Level 19 Puzzles and Answers in Easy to See Large Clear Print.
There are ten 480 puzzle books in this Level 19 collection. Plus one bonus Edition that contains and additional 220 Puzzles.
All the books in the Diabolical Series have beautiful themed cover art.
All the Puzzles were generated using the Level 19 Algorithm. Level 19 is the most challenging level available. Solving these puzzles is a challenge any Sudoku player can be proud of.
We hope you enjoy our puzzle books and if you have any suggestions for improvements, please let us know. We always appreciate your reviews on Amazon.
Each Volume is available for purchase by clicking on the book cover.