The mind-boggling Key and Ring Puzzle!!

Remove the brass ring from the steel key. From the first point of view, there is no way it can be taken off. Well.., from the first point of view...

My Amazon.com shop:
https://www.amazon.com/shop/mrpuzzle
As an Amazon Associate, I earn from qualifying purchases

http://www.puzzlemaster.ca/ is a Canadian website that carries many thousands of puzzles/brain teasers and offers you worldwide free shipping at $99 by using the coupon code available here:
https://www.PuzzleMaster.ca/mrpuzzle2...

The puzzle shown in this video is available here:
https://www.logicagiochi.com/it/schlu...
Knobelbox: https://www.knobelbox.com/geduldsspie...

More cool puzzle shops I do recommend:

US:
https://www.puzzlemaster.ca/?a=643812
https://www.artofplay.com/?rfsn=60833...
https://www.creativecrafthouse.com (10% discount by using voucher "Mr Puzzle")

Europe:
https://jpgamesltd.co.uk/?tracking=5b...
https://www.knobelbox.com/?sPartner=m...
http://logicagiochi.com/?aw_affiliate...

Asia:
https://www.siammandalay.com/?ac=mrpu...
https://puzzlemax.com/?___store=puzzl...

The links above are affiliate links. If you click the link and buy a product, I will receive a commission from the seller.

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Music:
Mandeville von Kevin MacLeod ist unter der Lizenz "Creative Commons Attribution" (https://creativecommons.org/licenses/...) lizenziert.
Quelle: http://incompetech.com/music/royalty-...
Interpret: http://incompetech.com/