sudoku hard: challenging

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Will Shortz Presents Sweater Weather Sudoku: 200 Challenging Puzz: Hard Sudoku Volume 2
Will Shortz Presents Sweater Weather Sudoku: 200 Challenging Puzz: Hard Sudoku Volume 2
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Hard to Extreme Sudoku - 300 Challenging Puzzles - Volume 3: Hard, Very Hard and Extremely Hard Puzzles for Advanced Players and Experts
Hard to Extreme Sudoku - 300 Challenging Puzzles - Volume 3: Hard, Very Hard and Extremely Hard Puzzles for Advanced Players and Experts
£5.73
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Will Shortz Presents Hard Sudoku Volume 1: 200 Challenging Puzzles
Will Shortz Presents Hard Sudoku Volume 1: 200 Challenging Puzzles
£5.02
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Will Shortz Presents Hard Sudoku, Volume 7: 200 Challenging Puzzles (Will Shortz Presents, 7)
Will Shortz Presents Hard Sudoku, Volume 7: 200 Challenging Puzzles (Will Shortz Presents, 7)
£12.94
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Sudoku Hard to Extremely Hard Challenging Levels: 100 Puzzles Book For Sudoku Killer, 1 Game Per Page, Brain Training Game, Logical Thinking, Pocket Size
Sudoku Hard to Extremely Hard Challenging Levels: 100 Puzzles Book For Sudoku Killer, 1 Game Per Page, Brain Training Game, Logical Thinking, Pocket Size
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Will Shortz Presents The Huge Book of Hard Sudoku: 300 Challenging Puzzles
Will Shortz Presents The Huge Book of Hard Sudoku: 300 Challenging Puzzles
£12.40
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Hard Sudoku Puzzles Book: 16x16 Sudoku Games for Clever and Smart Adults, Ultimate Brain Challenging Games (Adults Puzzles Games)
Hard Sudoku Puzzles Book: 16x16 Sudoku Games for Clever and Smart Adults, Ultimate Brain Challenging Games (Adults Puzzles Games)
£5.37
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Hard to Extreme Jigsaw Sudoku - 300 Challenging Puzzles - Volume 2: Super Fiendish Irregular Sudoku Puzzle Book for Adults with Solutions
Hard to Extreme Jigsaw Sudoku - 300 Challenging Puzzles - Volume 2: Super Fiendish Irregular Sudoku Puzzle Book for Adults with Solutions
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Will Shortz Presents Hard Sudoku Volume 5: 200 Challenging Puzzles
Will Shortz Presents Hard Sudoku Volume 5: 200 Challenging Puzzles
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Hard to Extreme Jigsaw Sudoku - 300 Challenging Puzzles - Volume 1: Irregular Sudoku Puzzle Book for Adults with Solutions
Hard to Extreme Jigsaw Sudoku - 300 Challenging Puzzles - Volume 1: Irregular Sudoku Puzzle Book for Adults with Solutions
£5.85
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Will Shortz Presents Hard Sudoku Volume 4: 200 Challenging Puzzles
Will Shortz Presents Hard Sudoku Volume 4: 200 Challenging Puzzles
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Hard to Extreme Sudoku - 300 Challenging Puzzles - Volume 1: Hard, Very Hard and Extremely Hard Puzzles for Sudoku Experts
Hard to Extreme Sudoku - 300 Challenging Puzzles - Volume 1: Hard, Very Hard and Extremely Hard Puzzles for Sudoku Experts
£5.99
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Hard to Extreme Jigsaw Sudoku - 100 Challenging Puzzles: Irregular Sudoku Puzzle Book for Adults - Extremely Difficult Sudoku Variant for Advanced Players
Hard to Extreme Jigsaw Sudoku - 100 Challenging Puzzles: Irregular Sudoku Puzzle Book for Adults - Extremely Difficult Sudoku Variant for Advanced Players
£4.99
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Will Shortz Presents Hard Sudoku Volume 8: 200 Challenging Puzzles (Will Shortz Presents, 8)
Will Shortz Presents Hard Sudoku Volume 8: 200 Challenging Puzzles (Will Shortz Presents, 8)
£11.19
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Large Print Hard Killer Sudoku: 100 Challenging Sumdoku Puzzles for Experts
Large Print Hard Killer Sudoku: 100 Challenging Sumdoku Puzzles for Experts
£6.35
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Hard Killer Sudoku - 100 Challenging Puzzles: Sums Sudoku Puzzle Book for Adults - Very Difficult Sudoku Variant for Experts - Perfect Travel Companion
Hard Killer Sudoku - 100 Challenging Puzzles: Sums Sudoku Puzzle Book for Adults - Very Difficult Sudoku Variant for Experts - Perfect Travel Companion
£5.85
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Extra Large Print Sudoku - 100 Hard to Extreme Puzzles: Challenging Puzzle Book for Adults, Seniors and Teens - Only One Per Page with Answers
Extra Large Print Sudoku - 100 Hard to Extreme Puzzles: Challenging Puzzle Book for Adults, Seniors and Teens - Only One Per Page with Answers
£5.85
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Will Shortz Presents Hard Sudoku Volume 2: 200 Challenging Puzzles
Will Shortz Presents Hard Sudoku Volume 2: 200 Challenging Puzzles
£9.27
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The 300 Sudoku Very Hard Difficult Challenging Extreme Expert Level Puzzles brain workout large print (The Sudoku Obsession Collection)
The 300 Sudoku Very Hard Difficult Challenging Extreme Expert Level Puzzles brain workout large print (The Sudoku Obsession Collection)
£9.99
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Sudoku 80 Puzzles to Train Your Brain: 80 Challenging Puzzles to Train Your Brain - 20 per Level: Easy, Medium, Hard, Expert
Sudoku 80 Puzzles to Train Your Brain: 80 Challenging Puzzles to Train Your Brain - 20 per Level: Easy, Medium, Hard, Expert
£5.32
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Sudoku for Seniors: Challenging Puzzles in 5 Gradual Levels, from Very Easy to Very Hard, for Brain Training and Focus, with Solutions Included
Sudoku for Seniors: Challenging Puzzles in 5 Gradual Levels, from Very Easy to Very Hard, for Brain Training and Focus, with Solutions Included
£8.99
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Cognitive Resilience Sudoku-Challenging Grids to Reinforce Mental Agility: 1200 Hard Level Puzzles Volume 4: 8.5x11 Glossy Cover: Solutions Included
Cognitive Resilience Sudoku-Challenging Grids to Reinforce Mental Agility: 1200 Hard Level Puzzles Volume 4: 8.5x11 Glossy Cover: Solutions Included
£12.90
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The Gymnasium For Your Brain Sudoku: Hard: 200 Challenging Puzzles with Solutions for Advanced Solvers, Mental Mastery, and Peak Performance
The Gymnasium For Your Brain Sudoku: Hard: 200 Challenging Puzzles with Solutions for Advanced Solvers, Mental Mastery, and Peak Performance
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Sudoku- Hard: Challenging Hard Sudoku - 100+ Expert-Level Puzzles for Serious Solvers (6×9”)
Sudoku- Hard: Challenging Hard Sudoku - 100+ Expert-Level Puzzles for Serious Solvers (6×9”)
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Sudoku for Brain Training: Easy to Hard Puzzles for Adults: Hundreds of Challenging Sudoku Puzzles to Boost Your Brain (Papora Sudoku Collection)
Sudoku for Brain Training: Easy to Hard Puzzles for Adults: Hundreds of Challenging Sudoku Puzzles to Boost Your Brain (Papora Sudoku Collection)
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Large Print Hard Sudoku Puzzle Book for Adults: 100 Challenging Puzzles (58pt font) for Puzzle Lovers with Low Vision (Large Print Sudoku Books for Adults)
Large Print Hard Sudoku Puzzle Book for Adults: 100 Challenging Puzzles (58pt font) for Puzzle Lovers with Low Vision (Large Print Sudoku Books for Adults)
£5.95
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Sudoku Book for Adults - Large Print Medium to Hard Puzzles: 630 Challenging Sudoku Puzzles for Brain Teasers and Mental Fitness
Sudoku Book for Adults - Large Print Medium to Hard Puzzles: 630 Challenging Sudoku Puzzles for Brain Teasers and Mental Fitness
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80 Challenging 16x16 Sudoku Puzzles: To challenge the mind, perfect for a home, work or school, Great for a leisurely break to help keep the mind ... Challenge Books - Easy, Medium and Hard)
80 Challenging 16x16 Sudoku Puzzles: To challenge the mind, perfect for a home, work or school, Great for a leisurely break to help keep the mind ... Challenge Books - Easy, Medium and Hard)
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Pocket Sudoku Book for Adults: 200 Puzzles from Easy to Hard: Sudoku Book Pocket Edition | Compact Sudoku Pocket Size with Challenging Puzzles for Travel and Relaxation
Pocket Sudoku Book for Adults: 200 Puzzles from Easy to Hard: Sudoku Book Pocket Edition | Compact Sudoku Pocket Size with Challenging Puzzles for Travel and Relaxation
£4.99
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Hard Sudoku Puzzle Book for Adults Large Print: 100 Challenging Puzzles with Solutions for Experienced Solvers | An Advanced Level Sudoku Book to Push Your Brain to the Limit (Sudoku Challenge Series)
Hard Sudoku Puzzle Book for Adults Large Print: 100 Challenging Puzzles with Solutions for Experienced Solvers | An Advanced Level Sudoku Book to Push Your Brain to the Limit (Sudoku Challenge Series)
£9.99
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Super Sudoku 2026 Edition - 160 Hard Puzzles for Experienced Players: Challenging 9×9 Grids with Solutions | Compact 6×9 Travel Size | Brain-Boosting Logic Fun for Adults
Super Sudoku 2026 Edition - 160 Hard Puzzles for Experienced Players: Challenging 9×9 Grids with Solutions | Compact 6×9 Travel Size | Brain-Boosting Logic Fun for Adults
£6.75
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Large Print Sudoku for Seniors: Medium to Hard Large Print Puzzles | Challenging Brain Games for Logic & Memory (Sharp Mind Series)
Large Print Sudoku for Seniors: Medium to Hard Large Print Puzzles | Challenging Brain Games for Logic & Memory (Sharp Mind Series)
£9.99
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Hard Sudoku: 200+ Challenging Puzzles with Solutions | Volume 2 | Travel-Sized 6x9 Format | 2 Puzzles Per Page | Tough Brain Games for Adults and Seniors
Hard Sudoku: 200+ Challenging Puzzles with Solutions | Volume 2 | Travel-Sized 6x9 Format | 2 Puzzles Per Page | Tough Brain Games for Adults and Seniors
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Large Print Sudoku - Hard Series Volume 1, 200 Challenging 9×9 Puzzles in 24-Point Font with Solutions for Adults and Seniors Who Enjoy True Brain ... Sudoku - Hard Series by Maple & Webb Press)
Large Print Sudoku - Hard Series Volume 1, 200 Challenging 9×9 Puzzles in 24-Point Font with Solutions for Adults and Seniors Who Enjoy True Brain ... Sudoku - Hard Series by Maple & Webb Press)
£9.49
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300 Challenging Suduku . Hard Puzzles With Solutions: Unleash Your Inner Samurai Master A Mental Workouts or Gifting to Sudoku Ninja s, it's the ultimate puzzling delight!
300 Challenging Suduku . Hard Puzzles With Solutions: Unleash Your Inner Samurai Master A Mental Workouts or Gifting to Sudoku Ninja s, it's the ultimate puzzling delight!
£7.50
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Large Print Hard Sudoku for Adults: 300 Challenging Puzzles to Train Your Brain, Build Focus, and Sharpen Logic | With Full Solutions
Large Print Hard Sudoku for Adults: 300 Challenging Puzzles to Train Your Brain, Build Focus, and Sharpen Logic | With Full Solutions
£9.15
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200 Sudoku Hard: Challenging Brain-Crushing Puzzles: A Travel-Friendly Puzzle Book with One Puzzle Per Page and Solutions Included | 6 x 9 inches, 250 pages
200 Sudoku Hard: Challenging Brain-Crushing Puzzles: A Travel-Friendly Puzzle Book with One Puzzle Per Page and Solutions Included | 6 x 9 inches, 250 pages
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Sudoku on the Go: Hard Edition: 100 Challenging 9×9 Grids for Experienced Solvers
Sudoku on the Go: Hard Edition: 100 Challenging 9×9 Grids for Experienced Solvers
£7.48
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Sudoku Hard Edition 3: Challenging Puzzle book for logic lovers with full solutions (Puzzle Books for Adults)
Sudoku Hard Edition 3: Challenging Puzzle book for logic lovers with full solutions (Puzzle Books for Adults)
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SUDOKU 1000+ PUZZLES: OVER A 1000 EASY TO HARD PUZZLES FOR SENIORS,ADULTS AND TEENS | CHALLENGING PUZZLES FOR ALL TO HONE YOUR SUDOKU SKILLS
SUDOKU 1000+ PUZZLES: OVER A 1000 EASY TO HARD PUZZLES FOR SENIORS,ADULTS AND TEENS | CHALLENGING PUZZLES FOR ALL TO HONE YOUR SUDOKU SKILLS
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