Think you’ve mastered Sudoku? Think again. This extreme-level Triple Doku puzzle book delivers 100 mind-bending challenges using three fully intertwined grids that push logic, memory, and endurance to their absolute limits. Perfect for Sudoku veterans and puzzle purists looking to test themselves against some of the toughest grids out there. Includes: ✔ 100 extreme difficulty Triple Doku puzzles ✔ Intricate, multi-grid designs ✔ Clean layout and large print for visibility ✔ Complete solutions for every puzzle ✔ Great for brain training, competition prep, or advanced solvers ✔ Demands deep logical reasoning and patience This is not for beginners—it’s for those who live for the thrill of extreme logic challenges.