Killer Sudoku
Killer Sudoku Expert Puzzle Book
$9.99 to $14.99
Final price depends on shipping costs and country of purchase
480 Advanced Large Print Puzzles for a serious Brain Workout.
Quantity480 Puzzles
Layout2 Per Page
EXECUTIVE SUMMARY
"The Expert Calculus" protocol. This collection is only for those who have mastered the cage-summing logic. These expert-level Killer Sudokus provide the highest load for executive functioning.
PROTOCOL BENEFITS
- Extreme Focused Endurance: Requires deep, unwavering attention across complex mathematical grids.
- Advanced Cage Mapping: Trains the brain to hold 10-15 sum outcomes in short-term memory.
- Cognitive Peak Training: Designed to push your analytical reflexes to their maximum capacity.
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