Remember the famous Homer Simpson grunt? Well, that's the word we should be saying in this brand new topic! It's all about a simple little mistake in a solution which can ruin your entire attempt. For example here I have a lemmix replay showing the incorrect solution for Tricky 3 (Apparently you can't download this replay unless you've signed in, which is rather disappointing
). I'll put up some more eventually.
Hint: Press the "F" key when you get the replay for a fast forwarded version of the solution. This takes away the 10-second skip bit but still, you won't be too impatient. Anyway, have a good laugh!