My Cart | Sign In Contact | Returns | Shipping | Privacy   Questions? Live Chat Or, call: 1-856-461-8883 Home | My Cart Search All Items:  You have 0 item(s) in your cart worth $0.00  Jigsaw Puzzles $Money Puzzles Brain Teasers   Other:   - Books   - Cool Stuff   - Games   - Hoberman   - Puzzle Boxes   - Puzzle Cubes   - Puzzle Rings   - Rubik's Cubes   More:   - Eco-Friendly   - Made in USA   - New Items   - Sale Items   - Top Sellers     - Accessories   - Gift Sets   - Great Gifts   - Solutions     Volume Orders & Corporate Sales   Institutional Sales What sets us apart from others? Free Standard Shipping* on all orders $60.00 or more! read more Same Day Shipping on orders placed before 4pm EST, M-F! read more Customer Service in just a moment's notice, 9am to 6pm EST M-F! Email, Phone, or Live Chat, read more Books   Show All     Chess Puzzles     Crosswords     Intelliquest     Mindware Kids Books     Lateral Thinking     Sudoku     Trivia     More...   Our collection of puzzle books includes nearly every type of printed puzzle available. You'll be sure to find the book you're looking for here: List All Books, Chess Puzzles, Crosswords, Intelliquest, Lateral Thinking, Sudoku, Trivia 1-21 of 40 matching items. For More Results - Page: 1 2    Sort: Bestselling!NewestAlphabetical (A-Z)Alphabetical (Z-A)Price (Low to High)Price (High to Low) Include Out-Of-Stocks Perplexors Level A - Puzzle Book By Mindware $12.95 Perplexors Expert Level - Puzzle Book By Mindware $12.95 Perplexors Level B - Puzzle Book By Mindware $12.95 Pocket Sudoku by Will Shortz, Volume 4: 150 Fast, Fun Puzzles (Paperback) $4.95 Perplexors Level C - Puzzle Book By Mindware $12.95 The Cube by Jerry Slocum, 128 pages, (8" x 8.5" Paperback w/ Flaps) - Puzzle Book $12.95 Analogy Challengers Beginner - Puzzle Book By Mindware $12.95 Analogy Challengers Advanced - Puzzle Book By Mindware $12.95 Logic Links Level D - Puzzle Book By Mindware $12.95 Pocket Sudoku by Will Shortz, Volume 1: 150 Fast, Fun Puzzles (Paperback) $4.95 Sudoku to Boost Your Brainpower Presented by Will Shortz: 100 Wordless Crossword Puzzles (Paperback) $6.95 Perplexors Level D - Puzzle Book By Mindware $12.95 Perplexors Basic Level - Puzzle Book By Mindware $12.95 Pocket Sudoku by Will Shortz, Volume 3: 150 Fast, Fun Puzzles (Paperback) $4.95 Logic Links Level A - Puzzle Book By Mindware $12.95 Grid Perplexors Level D - Puzzle Book By Mindware $12.95 Analogy Challengers Level B - Puzzle Book By Mindware $12.95 Venn Perplexors Level C - Puzzle Book By Mindware $12.95 Sudoku Easy to Hard by Will Shortz, Volume 2: 100 Wordless Crossword Puzzles (Paperback) $6.95 Sudoku Easy to Hard by Will Shortz, Volume 3: 100 Wordless Crossword Puzzles (Paperback) $6.95 Venn Perplexors Level B - Puzzle Book By Mindware $12.95 For More Results - Page: 1 2 40 matching items Narrow down: By Type: Books | Chess Puzzles (1) Books | Intelliquest (1) Books | Lateral Thinking (13) Books | Mindware Kids Books (27) Books | More… (2) Books | Sudoku (9) Brain Teasers | Pocket Sized Puzzles (4)   See More Types... Brain Teasers | Puzzle Cubes (1) Brain Teasers | Rubik's (1) Brain Teasers | Sudoku (9) Brain Teasers | Travel Puzzles (4) By Difficulty: Intermediate X By Ages:     5 yrs & up (2)     6 yrs & up (2)     7 yrs & up (1)     8 yrs & up (5)     9 yrs & up (2)     10 yrs & up (5)     11 yrs & up (2)     12 yrs & up (4)     14 yrs & up (3) By Price:     $10 & under (11)     $11 to $15 (29) Get SERIOUS... SeriousChai.com   - Chai Tea, Big Train, Ghirardelli SeriousFlags.com   - Garden Flags, Toland Flags, Decorative Flags SeriousCards.com   - Playing Cards, Chess, & Games SeriousPlush.com   - Plush Toys, Stuffed Animals SeriousPuzzles.com   - Jigsaw Puzzles, Brain Teasers, Money Puzzles   Headquarters: SeriousShops.com 1812 Underwood Blvd. STE 4 Delran, NJ 08075 US United States Copyright © 2001 - , all rights reserved SeriousPuzzles.com®, an AJM & Co., Inc. company SeriousShops.com, a network of online stores. Customer Service Contact Us Live Chat Returns Shipping Guarantee Bulk Orders & B2B Volume Orders Corporate Sales Institutional Sales Policy Stuff Privacy Policy Conditions of Use More Missing pieces? Solutions A really big puzzle! Account My Cart My Account My Orders Sign In Register About Us Why & How Who's Serious? Recognition Read our blog! SeriousShops.com Site Map Experience Tell us what you think Report a problem

Interlocking: This means that adjacent pieces are connecting such that if you move one piece horizontally you move all, preserving the connection.