I realized that your intended way is a push from the grass. It works stably - that's why 5! Thank you. The path under the wedge is very seductive, it worked the first time so I decided that it was the right one. But I was wrong. He is very tempting, it seems that you allude to him with all the blocks. On this I was wrong. Good logic and design
@Denis Nazin. What do you mean push from the grass? R push from the stair to the wedge is the intended. P can release R once R gets stuck under the wedge.
