Natrium — 6-piece puzzle (23 moves)

✨ Hook

6 pieces, zero guesswork: 23 moves to complete the assembly (or take it apart), then 11 moves to release the first piece once the cube is fully built. Single-color for the pure challenge; tri-color if you want clear orientation hints. Printable without supports.

📖 Description

A puzzle invented by Donald Osslaer in 2012. Natrium ticks all the boxes if you enjoy well-crafted challenges. This 6-piece cross requires precise choreography: 23 moves to finish the assembly (or to neatly disassemble it). Once built, count 11 moves to free the first piece — and that’s not the end, but almost. It’s both a puzzle to disassemble and, even more so, to reassemble.

Printing-wise, it’s designed to be simple:

• Single-color profile → all pieces on one plate.
• Tri-color profile → one plate per set of pieces (more legible for understanding orientations).

Key points

• Printable without supports.
• 6 pieces, 23 moves for full assembly/disassembly.
• 11 moves to free the first piece from the assembled state.
• Single-color (more challenging) or tri-color (more visual).
• The solution is included in the documents, but honestly… it would be a shame to look before you’ve sweated a bit over it! 😉

💬 Feel free to like, comment, boost, and share! Your feedback greatly helps with the puzzle series.

🔗 Discover my other puzzles: My MakerWorld collection

📝 Author’s notes

A lifelong puzzle enthusiast, I’ve made it my mission to recreate in Fusion 360 the ones I own in my collection, and eventually, to invent new ones. Natrium is one of these projects: a blend of tribute to the original creators and the joy of 3D printing.