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   - Assembly   - Classics   - Disentanglements   - Don't Puzzles   - Entrapment Puzzles   - Key Chains   - Mazes   - Money Puzzles   - Pattern Matching   - Peg Puzzles   - Pocket Sized   - Puzzle Boxes   - Puzzle Cubes   - Puzzle Locks   - Rings   - Rubiks   - Sequential   - Sliding   - Sudoku   - Tangle   - Travel   - Volumetric   - More...   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 Brain Teasers > Advanced > Assembly > Beginner > Classics > Disentanglements > Don't Puzzles > Entrapment > Extreme > Intermediate > Keychains > Mazes > Money Puzzles > More... > Pattern Matching > Peg Puzzles > Pocket Sized > Puzzle Boxes > Puzzle Cubes > Puzzle Locks > Rings > Rubik's > Sequential > Show All > Sliding > Sudoku > Tangle > Travel > Volumetric  > Volumetric ...puzzles whose object is to fill an "impossible" space with a volume of material that is seemingly to large. 1-21 of 21 matching items. For More Results - Page: 1    Sort: Bestselling!NewestAlphabetical (A-Z)Alphabetical (Z-A)Price (Low to High)Price (High to Low) Include Out-Of-Stocks Pack It In - Classic Brain Teaser $4.95 Square Fit - Volumetric Puzzle $6.95 Paradigm Puzzles: Interlace Diamond - Volumetric Pattern Puzzle $14.95 Adam's Cube - Brain Teaser $9.95 Hexahedron - Volumetric Puzzle $15.00 Preposterous - Volumetric Puzzle $14.95 Four T - Brain Teaser $6.95 Rec-Tangle - Brain Teaser $8.95 Paradigm Puzzles: Sequence - Volumetric Pattern Puzzle $14.95 Holes & Balls - "Dice Box" Volumetric Puzzle $10.95 Polyminoes - "Dice Box" Volumetric Puzzle $9.95 Casket - Volumetric Puzzle $15.00 Half Cubes - "Dice Box" Volumetric Puzzle $9.95 Rod by Rod - "Dice Box" Volumetric Puzzle $10.95 Katzen (Cats) - Pocket Sized Brain TeaserNEW $11.95 Cube w/ Holes & Pins - "Dice Box" Volumetric Puzzle $10.95 Stacked Sticks - "Dice Box" Volumetric Puzzle $9.95 Paradigm Puzzles: Tetra Scales - Volumetric Pattern Puzzle $14.95 Nifty Fifty - Brain TeaserNEW $13.95 Rhombic Soma - Brain TeaserNEW $20.95 Nagelbox 30 - Brain TeaserNEW $35.95 For More Results - Page: 1 21 matching items Narrow down: By Type: Brain Teasers (4) Brain Teasers | Assembly Puzzles | Interlocking (1) Brain Teasers | Assembly Puzzles | Stackable (6) Brain Teasers | Classics (1) Brain Teasers | More... (1) Brain Teasers | Pocket Sized Puzzles (1) Brain Teasers | Volumetric Puzzles (21) By Difficulty:     Intermediate (13)     Advanced (4) By Ages:     6 yrs & up (2)     7 yrs & up (1)     8 yrs & up (14)     14 yrs & up (2) By Price:     $10 & under (11)     $11 to $15 (8)     $16 to $20 (1)     $31 to $40 (1) 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.