Tetrahedron Pyramid Puzzle 4-Piece – Hard Brain Teaser, Great Gift For Teachers, Students, Classrooms, Up to 400×450×370mm-15.7×17.7×14.6in

Description
Deceptively simple—seriously challenging.
This 4-piece Tetrahedron / Triangular Pyramid Puzzle looks minimal, but don’t be fooled: assembling the four precision-cut pieces into a perfect pyramid is a tough, highly satisfying spatial challenge. Great for display, coffee tables, offices, and puzzle lovers who enjoy elegant geometry with real bite.

Why you’ll love it
4-piece design, tough solve: Accessible to learn, difficult to master—great replay value.
Striking geometry: A clean, modern look that fits the ItemsByCL aesthetic.
Display-worthy: Larger sizes make a bold statement on desks and shelves.

Sizes & dimensions
Comes in three sizes:
**Small: 145 × 95 × 40 mm (5.7 × 3.7 × 1.6 in)
**Regular (pieces): 215 × 125 × 60 mm (8.5 × 4.9 × 2.4 in)
Assembled pyramid: 265 × 300 × 245 mm (10.4 × 11.8 × 9.6 in)
**XLarge (pieces): 340 × 200 × 95 mm (13.4 × 7.9 × 3.7 in)
Assembled pyramid: 400 × 450 × 370 mm (15.7 × 17.7 × 14.6 in)
Approx. weight (XL): ~3 kg (~6.6 lb)

Need help choosing a size or looking for a custom footprint? Send us a quick message—we’re happy to help.

What’s included
1 × Tetrahedron / Triangular Pyramid Puzzle (4 pieces)

How to play
Mix the four pieces.
Assemble them into a perfect triangular pyramid (tetrahedron)—no gaps or overlaps.
Try timed solves or challenge friends for best time.

Who it’s for
Ages: Recommended 10+ (small parts; difficulty level is high).
Perfect for puzzle enthusiasts, STEM classrooms, design lovers, and office desk challenges.

Care
Wipe gently with a soft, dry or slightly damp cloth. Avoid soaking and harsh cleaners.

Gifting
Add a gift note at checkout—we’ll include it at no extra cost.

How to order
Choose Small, Regular, or XLarge.
Confirm the size matches your space (see mm/in above).
Select quantity and add to cart.
For color requests or sets, send us a message first.