Thank you Tompa, but I haven't found any memory addresses for the game yet, I was going to do an April's fool submission and it would be one frame slower than your current run.
I think it is just one "sub pixel" because I can't reach the tree one frame sooner, but Link's head is visibly closer to the tree.
I don't have the .smv file with me right now, but I'll bring it tomorrow, it's a promise.
oh, and I'm just "tempted" to do the run, I'm actually working on a DKC2 102% update.
edit:
I really should stop using filters on my emulators, it's one pixel and not a sub pixel:
and here's the input file, I think it's related to the diagonal movement,
but without the memory address of Link's speed it's hard to say for sure:
http://dehacked.2y.net/microstorage.php/info/1349496607/ZeldaApril1st.smv
I managed to reach the point where you take damage,
but I couldn't manipulate the guard the way you did so
after the screenshot it's just a copy/paste of your run.