The puzzle has 16 pieces where each piece is made of 2 or 3 different shapes (cube, triangular prism, block).
There are 2 challenges you are asked to resolve
Challenge 1: form a 2 layer square using all 16 pieces (provided)
Challenge 2: form a 1 layer rectangle using all 16 pieces (not provided – you need to figure this one yourself).
Handmade by Vaclav Obsivac (Vinco), puzzles designer, inventor, and artist.