Chained Horseshoe Puzzle

Here's a cool design I did in 3 hours last night, a rare to find puzzle where you need to free the ring from the chained horseshoes. It's quite simple when you finally find the solution but rty not to google it.. If you succeed it means you're bright and that makes you lucky in life ;) I designed this to put it on Shapeways https://www.shapeways.com/product/5FXHVZ263/horseshoe-puzzle
so I didn't bother with supports and FDM printability because they use powder based printers where there's no n