Interlocked 3D puzzle

Interlocked is a great 3D Puzzle. There are 20 levels that is 20 different puzzles to play. It is a 3D game so you can drag the object to view it in 3D. You need to study how the blocks are attached, interlocked to each other and then try to drag its pieces apart. You need to press space bar so that the mouse pointer changes in a hand that will allow you to move the blocks. Pressing the space bar again will change the mouse pointer to a circular shape and you can rotate the object.
There is a walkthrough available, Just click on the question mark at the top of the screen and it will open a walkthrough video in a new tab.  You can watch the introductory video below

You can play this game on the link below