Uploaded January 2023 | Updated September 2026, 3 days ago

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Backslice moonboots bomb boost elder 1 & magnetic ceiling skip, for ILs
Another of the names is "Small Key Skip Key Shard Skip" AKA skskss, c'mere kitty
Discovered by pokemongenius
Targetless method by @jeezhs : youtube.com/watch?v=8rN_0tiNWWQ

This absurd looking trick utilises a backslice moonboots combined with a gale bomb boost to get to the next floor up, which skips all of the first set of insides rooms, including the first goron elder (and so the first key shard) and, most significantly, the entire magnetic ceiling. This saves around two and a half minutes for the Goron Mines Any% IL on Gamecube.

- Get onto the rail with a jump or jump attack
- Aim the gale above the upper railing for an LJA onto the doorframe (mash B while landing from the LJA to jumpslash up if you recoil off)
- Align Link's right foot with the dark circle/bolt on the doorframe. This isn't too precise, you just don't want to be too fair either side or the bomb could explode on the rail where you want to land, or the wall on the other side on the way back)
- Turn around and aim in first person. Here Link's first heart is aligned with the railing, but the range for this is extremely wide. This is about the centre of the range. Too far left and the bomb will explode on the rail right as you throw, way too far right and it'll explode on the far wall while returning.
- Pull a bomb, and hold target. Holding target makes Link hold the bomb on his left instead of above his head.
- Toss the boomerang
- Turn right in preparation to backslice. There's no time to c-up for a good angle with this targetless method, so you have to snap to an angle. More important than the angle is where you go with the backslice, so you can adjust your position a little based on what angle you have, to account for how much the backslice will slide you across the wall. You want the jump from the backslice to be just before the dark vertical line on the wall. Far back enough for the bomb to hit you onto the rail, and far forward enough that you're still on the highest part of the doorframe (y-pos: 109.1600).
- On frame 74-76 (which seems to depend on position and angle, the frame window for the sidehop and how much it varies is uncertain) sidehop and start a backslice. It's important you do the earliest possible sideroll, either by mashing or timing the second input before the sidehop has landed, so that the time from starting a sidehop to finishing the backslice is consistent.
- Equip and unequip drained magic armour for a first frame backslice moonboots
- If timed correctly, the bomb will explode on the wall while returning and boost you backwards onto the rail above.
- Sidehop or rolljump with a shallow angle to avoid the cutscene trigger near the door

With all else correct, an early sidehop will cause the bomb to return but not explode. A late sidehop will cause the bomb to return and explode too early in the backslice.

Because you can't see the boomerang, and can hardly hear it, timing the sidehop without assistance is very difficult.
The first clip in the video below uses a metronome tempo of 140 to time the gale throw and the sidehop, the second clip 144. Counting beats of three, throw on beat one, and sidehop on beat 7 (1-2-3, 1-2-3, 1).
Alternatively, start with a low number of rupees, and use the timing of rupees draining as a cue for when to sidehop.

For further reference, here is a compilation of 21 successful boosts from when I first learned this trick: youtu.be/xth6MUaFAtg
And here are 7 boosts from Jeez, which helped me learn: youtube.com/watch?v=O8pMGTyZ7IA

See ZSR for more info: zeldaspeedruns.com/tp/dungeon/goron-mines#key-shard-magnetic-ceiling-skip

Timestamps:
0:00 - Vanilla Demonstration
0:25 - Input Display + Debug Info
Main YouTube: @simikins