About this book
Split Protocol is where technique separates from instinct. Expert-level grids that require advanced solving strategies — X-wings, swordfish, and beyond. If you can finish this book without looking at the solutions, you belong in the top tier.
Perfect for:Adults
// Buyer Fit
Who this book is for
- Sudoku solvers who want a clean paper session
- Adults who want focused puzzle time
- Gift buyers looking for a polished puzzle book
- Experienced solvers ready for a sharper challenge
// Volume Identity
What makes this volume different
- Expert stage in the Cipher 9 Sudoku progression
- 150 grids sized for this difficulty level
- One puzzle per page keeps the solving experience clean
- Checkpoint pages help track progress through the volume
// Specifications
Formatpaperback
Pages198
Trim Size8.5 x 11 in
PaperWhite paper
Puzzles150
Puzzle TypeSudoku
DifficultyExpert
LanguageEnglish
ASINB0GXWXQJNV
// Inside the Book
Preview the pages
Cover and interior samples from the current book files.
// Series Ladder
Compare volumes in Cipher 9 Sudoku
VolumeTitleDifficultyPuzzlesStatusPriceAction
Vol.01
First Contact
100 Sudoku Grids — Entry Level
DifficultyBeginner
Puzzles100
StatusAvailable now
Price$12.99
Vol.04Current
Split Protocol
Expert Sudoku
DifficultyExpert
Puzzles150
StatusAvailable now
Price$16.99
Current