This worked for me:
The pin can be moved in eight directions: North, Northeast, East, Southeast, South, Southwest, West and Northwest. Move the pin until you hear a click. Note the direction of the pin at the time it clicked. (This puzzle is different with each game, which means finding a solution is a matter of trial and error.) Move the pin in the direction that produced the click, get the click and then try another move. If you don't get a click, go back to the first move that produced a click and try another move. Repeat until you have a pattern that produces four clicks. The lock will now open.
Note: A successful pattern can include repetition, such as N, NE, S, S.