Small 'n difficult

[jf]

For Negative Image 4, I saved with an extra piece: danarof.

Key was tough until I let go of my partial solution and started over -- unlocked spaces could be a red herring -- my solution: nulalal

[sly]

Key hurt my brainz!

xicaful

[jnz]

Nice solutions for Key everyone.  Here's my original solution that proved to me it was solvable: mubolok.

I've since come up with a tighter solution so here's Key 2: vufogix

[jf]

For Key 2: gyvyhad. Good puzzle.

[jnz]

Key 3: pysomyz

[Bucky]

Key 3: sehulus. easy enough.

[adept]

Key 3 sahomyp  Maybe not that easy to people not named Bucky

[jf]

For Key 3 (pysomyz): nugolis. Good puzzle -- it really gets down to subtleties with these tiny puzzles.

[jnz]

Reverse Shuffle: zatodos

Since nobody has solved Pseudo-Random 0 (vatedar), I'll supply a hint: It can be solved using only girders

[Rene]

For Key 3 (pysomyz): xicited - Nice little one

I am surprised there are so many different solutions for this one

For Reverse Shuffle (zatodos): gyfidab

That was an easy one - I guess there is a follow-up?

[Rene]

Since nobody has solved Pseudo-Random 0 (vatedar), I'll supply a hint: It can be solved using only girders

I have a solution that solves all but the left-most crate. That solution uses more than only girders: serabyt, and I used a Java program to calculate what sequence of crates it should produce. Are you 100% sure that it can be solved with only girders?

[jnz]

For Reverse Shuffle (zatodos): gyfidab

That was an easy one - I guess there is a follow-up?

Sure, why not?  Reverse Shuffle 2: bugusys

Are you 100% sure that it can be solved with only girders?

Just checked again and my original solution still works.    I'll provide another hint if needed but not quite yet.

[Rene]

Just checked again and my original solution still works.    I'll provide another hint if needed but not quite yet.

No need... here is the solution:

For Pseudo Random-0 (vatedar): degohan

I solved it with another Java program. My original program was fooled by the gap between the 2 and the 9

[sly]

for reverse shuffle 2: vokaleg

[jnz]

For Pseudo Random-0 (vatedar): degohan

I solved it with another Java program. My original program was fooled by the gap between the 2 and the 9

I thought that might be the case.  I put that in specifically to frustrate simulation.  I guess it worked. 
I should also mention that I'm impressed with your almost-solution posted earlier.  I was hoping somebody would come up with a solution other than my original even though I thought it unlikely that one existed.  Five out of six is very nice indeed.