I've played your latest release for a bit and I must say it's becoming really quite nice. I do find it hard to play at times. For instance when I become trapped on one side and need blocks on the other.

I'm not sure if you are familiar with this bug, but at one time I was able to climb inside a wall, call the crain and drop blocks on me, without getting killed. After that I wasn't able to move anymore.
Here's a picture of that moment.

It also shows my problem. Suppose I'm at the far right side. I can't climb/jump to the left, but I do need blocks there, otherwise I can't create rows. How do I do that?