Detective Logic Puzzles for Adults: 50 Crime-Themed Logic Grid Puzzles - Fun, Easy to Hard Logic Puzzles - Large Brain Teaser Book

Hard Logic Puzzles & Brain Games for Adults: 500 Puzzles & 12 Puzzle Types (Sudoku, Fillomino, Battleships, Calcudoku, Binary Puzzle, Slitherlink, ... 3 (Challenging Fun Brain Teasers Series)

Suguru (Number Blocks): 500 Easy to Hard Logic Puzzles (10x10): 11 (Logic & Brain Teasers Series)

Will Shortz Presents the Big, Bad Book of KenKen: 100 Very Hard Logic Puzzles That Make You Smarter

Suguru (Number Blocks): 500 Medium to Very Hard : (9x9) Puzzles (Logic Puzzles for Adults Series)

Activity Book : Logic Puzzles for Adults & Seniors: 500 Hard Puzzles (Sudoku - Fillomino - Straights - Futoshiki - Binary - Slitherlink - Sudoku X - ... 29 (Brain Games for Adults Series)

Suguru Puzzle Book: 500 Easy to Hard (12x12) Number Blocks Puzzles (Logic Puzzles for Adults Series)

Suguru (Number Blocks): 500 Hard to Extreme : (9x9) Puzzles (Logic Puzzles for Adults Series)

Huge Hashi 30x30 - Easy to Hard - Volume 3 - 159 Logic Puzzles

Logic Puzzles & Brain Games for Adults: 500 Easy to Hard Puzzles & 12 Puzzle Types (Sudoku, Fillomino, Battleships, Calcudoku, Binary Puzzle, ... Numbrix): 4 (Challenging Fun Brain Teasers)

Suguru Adult Puzzle Book: 1000 Hard Number Blocks (12x12) Puzzles (The Big Books of Logic Puzzles Series)

Hard Core Hashiwokakero 200 Puzzles for Adults: aka Hashi, Bridges or Ai-Ki-Ai, These Bridges and Islands Logic Puzzles are Fun Brain Games to Keep Your Mind Active.

Adults puzzles book. 200 Kakuro and 200 killer Sudoku. Hard - extreme levels.: Kakuro + Sudoku killer logic puzzles 8x8.: 9

The Great Big Book of Really Hard Puzzles : 256 Pages of Mind-Twisting Mazes, Logic Games and Hidden Pictures Puzzles, Highlights Activity Book for Kids Ages 8 and Up

The Hardest Logic Workbook for Gritty Kids: Spatial Reasoning, Math Puzzles, Word Games, Logic Problems, Focus Activities, Two-Player Games. (Develop ... & STEM Skills in Kids Ages 10, 11, 12.)

Nonograms Hanjie Puzzle Book For Adults: 100 Challenging Picross Puzzles | Easy To Hard Japanese Crosswords | Griddlers Paint By Numbers | Picture Cross Pixel Logic Puzzle | Brain Teaser

Jigsaw Samurai Sudoku: 500 Hard Jigsaw Sudoku Puzzles Overlapping into 100 Samurai Style: 4 (Logic & Brain Teasers Series)

Tricky Logic Puzzles for Adults: 130+ Difficult Puzzles to Challenge Your Brain

The Times Codeword 16: 200 cracking logic puzzles (The Times Puzzle Books)

The Times Codeword 15 : 200 Cracking Logic Puzzles

The Times Codeword 14: 200 cracking logic puzzles (The Times Puzzle Books)

Ultimate Dot to Dot 1000 Dots: Connect The Dots For Kids And Adults | Hard Puzzle | Extreme Game For Children | Brain Activity Book | Logic Trace ... Activities | Animals | Scenes | Objects

The Times Codeword 13: 200 cracking logic puzzles (The Times Puzzle Books)