Haha, nice to see some people finally playing this game

Perhaps it will motivate me to try improving, too.
Funny to see Qetuth's video again, I think he made it for me some time ago, because I wasn't able to finish 2h.
About the scene at 1:00 min. You have
4 6
[] 4
there. The difference between 4 and 6 is 2, so you can hammer it down to
2 4
[] 2
because you will always have to hammer at least 2 times with the mallet covering this pattern.
Try thinking about what happens if you hammer 4 6 without covering [] 4. You'll get (because further clicking leads to an unsolvable pattern):
2 4 Unsolvable pattern with further clicking: 1 3 and 2
[] 4 [] 4 [] 4
This pattern automatically needs to be hammered 2x with the mallet covering it completely.
Now try the other possibility: Hammering
6 4
4 without [] and you'll get (stopping before pattern gets unsolvable):
4 4
[] 2
And again this pattern needs to be hammered at least 2 times with the mallet covering it completly.
So all in all you can see, either way you have to reduce
4 6 2 4
[] 4 to [] 2
and still you have all possibilities left for solving this pattern completly.
Hope you could understand my english and the explanation