[SCRIPT] Puzzle Help

[Cruzore]

1st one:
make a script area to where the stone should go.
Add a Collide callback for the stone touching the script area, the called function should set the stone inactive and should set a fixed, non-movable stone at the right place active.
Do the same with the rest.
Not too hard, ain't it? You can of course add sounds, special effects or something like that.