Greetings, twisty (and non-twisty) people! Here is my puzzle invention, grydlock:
grydlock1.jpg [ 69.49 KiB | Viewed 276 times ]
A grydlock is a crazy lock with 10 bolts. Each bolt has 2 significant positions: closed (green) and open (red). The object of the puzzle is to slide all 10 bolts to the open position. A bolt may sometimes be blocked by one or more of the intersecting bolts. It could take hundreds of moves to unlock a grydlock.
I like to think of grydlock as equivalent to a maze on a 10 dimensional hypercube. Each configuration of the puzzle corresponds to a corner of the hypercube. When you move a bolt, it is like traversing an edge of the hypercube. Some edges are like corridors you can pass through. Other edges are solid and you can't pass.
You can try grydlock online at http://grydlock.com