Today I’ll solve the Black Square Puzzle by the Russian designer Vladimir Krasnoukhov. This tray-packing puzzle consists of only 5 pieces – 4 half trapezes, and one square. It seems like a lot of space is available – but the square just doesn’t fit in…

I hope you enjoyed the solution! I personally found it beautiful. I don’t think there’s a single thing I’d improve with this design.

If you want to get one of Vladimir’s puzzles yourself, you can do so here. Puzzle Master also has an acrylic version of this puzzle, available here.