https://makezine.com/article/science/math-monday-giant-soma-puzzle/
Math Monday: Giant SOMA puzzle - Make:
Dec 27, 2009 - Giant SOMA puzzle By George Hart for the Museum of Mathematics The seven-piece SOMA puzzle has been a classic since Piet Hein invented it in the 1930s.
math mondaysoma puzzlegiantmake
https://www.instructables.com/Wooden-Soma-Cube-a-3D-Puzzle/
Wooden Soma Cube (a 3D Puzzle) : 4 Steps - Instructables
Wooden Soma Cube (a 3D Puzzle): A soma cube is a 3D puzzle that your end goal is to make a cube. This is a great present for almost all ages, and you can build...
soma cube3d puzzlewooden4steps