Description
Hard Killer Sudoku: 250 Sum Sudoku Puzzles for Adults
Push your logical thinking and number-strategy skills to the limit with this powerful collection of 250 Hard Killer Sudoku puzzles. Designed for experienced players who crave deeper deduction and smarter arithmetic reasoning, each puzzle delivers a truly satisfying challenge — where every move counts.
Killer Sudoku merges classic Sudoku rules with sum-restricted cages, forcing you to consider both valid placements and possible number combinations at every step. These puzzles will powerfully strengthen your concentration, memory, and problem-solving abilities.
✅ What’s Inside:
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✅ 50 Classic Killer Sudoku (9×9)
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✅ 50 Diagonal Killer Sudoku — both diagonals must contain digits 1–9
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✅ 50 Jigsaw Killer Sudoku — irregular regions for extra complexity
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✅ 50 Diagonal + Jigsaw Killer Sudoku — advanced dual-constraint logic
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✅ 50 Killer Sudoku 12×12 — expanded grid for ultimate challenge
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✅ Hard difficulty — crafted for serious puzzle solvers
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✅ Two puzzle per page — clean layout, plenty of solving space
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✅ Complete solutions included
Perfect for puzzle enthusiasts seeking a more intense workout, this book will keep your mind fully engaged for days, weeks, and months to come.
🎁 A great gift for advanced Sudoku fans and anyone who loves a true logical battle!
Are you ready to challenge your limits?
Add this book to your cart and start solving today!
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