Algodoo

1.18
2.25
3.(down)
Start
111
001
110
1.tap the top-left light
001
101
110
2.Tap the center
011
010
100
3.Tap the bottom edge
011
000
011
4.Tap the top-right edge
000
001
011
5.Tap the bottom-right edge
000
000
000
You're done!

1. 18
2. 4
3. Still dont understand when i clicked does nothing.

@Uglytopians.
At 3,I Don't Have Good Technique To Make It.

That's Why I Said "Prove".

1. 18 left, just because 13 taken, doesn't means they're eaten
2. 21, the other 4 will melt down eventually
3. I'll use the following notations:
123
456
789
tap 1 to light 4 and shut 12
lit:34678
tap 5 to light 25 and shut 468
lit:2357
tap 8 to light 89 and shut 57
lit:2389
tap 3 to light 6 and shut 23
lit:689
tap 9 to shut 689
lit:DONE!

Actually, I'll Do It.
1. 18
2. 21
3.
111
001
110
____
001
101
110
___
011
010
100
___
­011
000
011
___
000
001
011
___
000
000
000

@TheTWOWTeam

Are you copying me?

You did it the exact same way I did it.

I don´t want to do 3 again...