Laser Tank

I'm reluctant to ask for help on this one. I'm afraid the solution will be so complicated it will take a while to explain.
For starters, I cannot figure out how one would remove the blocks at I,J and K-6.
If it is too complicated, I will skip it.

I haven't had much of a look at this one as it doesn't really appeal to me and I have the 'flu' but I don't think that it's necessary to shoot those bricks you mentioned, certainly not from the outside.

Surely you just need to clear E5 & F5, push the G5 block across (which clears all the R5 bricks) then you can push the I4 block in and across and go in yourself? As long as you already cleared E10 & H9, it should be an easy run to the flag from there.

Probably the trickiest part is getting another block up to the top to go on J3.