EXTREME SUDOKU: 300 Sudoku Puzzles with Solutions — Large-Print 8.5×11, two per page, crisp grids, answers at the end.

Extreme Sudoku, curated for serious solvers. Whether you’re buying this for yourself or as a gift, this book delivers a deliberate, fair challenge—no guessing, no gimmicks, just clean logic.
What you’ll find inside 300 Sudoku puzzles selected and verified for true difficulty, with a progressive ramp from very hard to genuinely extreme. Large-print 8.5″ × 11″ layout, two puzzles per page, crisp grids, and comfortable space for notes. Solutions at the end, in matching order (cleanly typeset, easy to reference).
Who this book is for Experienced solvers who already master “Hard” level and want a tougher, more technical workout. Gift buyers looking for a premium, minimalist Sudoku book that feels serious and well crafted.
How the difficulty is built Logical paths only—no trial-and-error. You’ll rely on strong fundamentals plus advanced techniques. Expect patterns such as wings (XY/XYZ), fish (X-Wing, Swordfish, finned), advanced coloring, and chains/AIC; in the very last sets, occasional ALS/Exocet may appear when justified. Puzzles were individually checked for fairness and solvability along a curated progression, so the challenge grows without becoming arbitrary.
If you enjoy pure deduction, careful pencil marks, and that steady “click” of insight, this collection was made for you. Settle in—focus, rhythm, precision—and enjoy the climb., ISBN13:B0FP9DBXR6 ISBN10:B0FP9DBXR6 Material Type:paperback