An intriguing wooden lock that needs no key to open.
This wooden puzzle lock requires you to figure out the correct "combination".
In order to open the lock, you must turn the circular dials to the correct positions in order to allow the acrylic slider to move to the bottom and open the lock.
20 rollers + 1 plexiglass lever that prevents searching for the right combination to open the lock. Binary combination.
Hard puzzle to solve.
Invented and made by Siebenstein Spiele, puzzles designer, inventor, and artist.