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Hard Maths Puzzles With Answers: Renban Puzzles - 200 Hard Math Puzzles: 1 (Hard Math and Logic Puzzles)
Hard Maths Puzzles With Answers: Renban Puzzles - 200 Hard Math Puzzles: 1 (Hard Math and Logic Puzzles)

£8.24

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Luxury Logic Puzzles — Killer Sudoku: 200 Hard Puzzles
Luxury Logic Puzzles — Killer Sudoku: 200 Hard Puzzles

£14.99

Amazon

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Luxury Logic Puzzles — Sudoku Classic: 200 Hard Puzzles
Luxury Logic Puzzles — Sudoku Classic: 200 Hard Puzzles

£9.99

Amazon

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Luxury Logic Puzzles — Killer Sudoku: 200 Hard Puzzles
Luxury Logic Puzzles — Killer Sudoku: 200 Hard Puzzles

£9.99

Amazon

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Logic Grid Puzzles, Volume 4: 50 Fiendishly Hard Puzzles (Logic Puzzles for Adults - Platinum Collection)
Logic Grid Puzzles, Volume 4: 50 Fiendishly Hard Puzzles (Logic Puzzles for Adults - Platinum Collection)

£12.97

Amazon

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Tons of Logic Puzzles: 1000 Hard Variety Puzzles: 78 (Logic & Brain Teasers Series)
Tons of Logic Puzzles: 1000 Hard Variety Puzzles: 78 (Logic & Brain Teasers Series)

£9.03

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Extreme Logic Challenges: Hard Sudoku Puzzles
Extreme Logic Challenges: Hard Sudoku Puzzles

£12.69

Amazon

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Slitherlink Puzzles Mixed Grids: Logic Puzzles for adults (easy to hard)
Slitherlink Puzzles Mixed Grids: Logic Puzzles for adults (easy to hard)

£6.73

Amazon

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Slitherlink Puzzles Large Grid: Logic Puzzles for adults (medium to hard)
Slitherlink Puzzles Large Grid: Logic Puzzles for adults (medium to hard)

£6.72

Amazon

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Strimko 6x6: 150 Hard Number Logic Puzzles
Strimko 6x6: 150 Hard Number Logic Puzzles

£2.99

Amazon

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Logic Grid Puzzles, Volume 3: From Easy to Fiendishly Hard (Logic Puzzles for Adults - Platinum Collection)
Logic Grid Puzzles, Volume 3: From Easy to Fiendishly Hard (Logic Puzzles for Adults - Platinum Collection)

£12.97

Amazon

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Logic Grid Puzzles, Volume 1: From Easy to Fiendishly Hard (Logic Puzzles for Adults - Platinum Collection)
Logic Grid Puzzles, Volume 1: From Easy to Fiendishly Hard (Logic Puzzles for Adults - Platinum Collection)

£20.97

Amazon

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Logic Grid Puzzles, Volume 2: From Easy to Fiendishly Hard (Logic Puzzles for Adults - Platinum Collection)

£12.97

Amazon

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Hardest Puzzles: Mochikoro Puzzles - 200 Hardest Puzzles With Answers: 3 (Hard Math and Logic Puzzles)

£8.17

Amazon

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Logic Grid Puzzles, Volume 1: From Easy to Fiendishly Hard (Logic Puzzles for Adults - Platinum Collection)

£11.97

Amazon

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Train Tracks Puzzles: 250 Hard Logic Puzzles 6x6 (Model Railway)

£6.99

Amazon

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Minesweeper: 500 Easy to Hard Logic Puzzles (10x10) : Keep Your Brain Young (Logic Puzzles for Adults Series)

£6.67

Amazon

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Mind Puzzles for Adults Difficult: Doors Puzzles - 200 Brain Puzzles with Answers (Hard Math and Logic Puzzles)

£8.17

Amazon

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Logic Puzzles Masyu: 3 Levels: Easy, Medium and Hard.

£6.54

Amazon

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Logic Puzzles Bridges: 3 Levels: Easy, Medium and Hard.

£6.54

Amazon

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56 hard sudoku (large print): difficult logic puzzles

£6.24

Amazon

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Consecutive Sudoku - Hard - Volume 4 - 276 Logic Puzzles

£7.20

Amazon

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Logic Puzzles Sign In: 3 Levels: Easy, Medium and Hard.

£6.54

Amazon

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