This puzzle was formerly sold by Crafty Puzzles and is retained as a free reference item. It is no longer available to purchase from this website.
Try a hint before revealing the answer
Open one hint at a time to preserve some of the challenge.
Hint 1
Treat each wooden cluster as a fixed piece; do not try to separate the individual balls.
Hint 2
Begin with the broad triangular base and keep all flat contact points facing inward.
Hint 3
The last clusters complete the upper layers of the pyramid rather than sliding through the centre.
Written assembly guide
- Compare the six fixed clusters with the L, T, I, v, i and d shape key in the linked guide.
- Use the guide’s square-lattice view to understand how right-angled clusters can fit inside a tetrahedral pyramid.
- Choose one generated layout and assemble it from the lowest square-lattice section upward.
- After placing each cluster, check every sphere contact before adding the next piece so no hidden gap is carried into the upper layer.
Use the preserved diagram or video alongside these steps for exact orientation. The written guide is an original summary prepared for this archive.
Complete Spheres solution
This six-piece puzzle forms a twenty-ball tetrahedral pyramid. The linked mathematical guide explains the geometry, identifies the six cluster shapes and provides generated solution layouts.
Open the verified external solution guide
The linked guide documents the puzzle geometry and provides complete generated layouts. It opens on the original author’s website.
Source and verification
- Archive source
- Yousuke Takada’s Twenty-Ball Pyramid Puzzle guide, with Professor Puzzle product identification clip — Open the mathematical solution guide
- Information checked
- 13 June 2026
- Verification status
- Matched by the six-piece sphere-cluster construction and finished tetrahedral form; not physically tested against the archived copy
- Page status
- Original Crafty Puzzles URL preserved
