While checking out the Sokoban Online version of Boxxle 1, I found that there is a hidden puzzle in that game. I have been trying to solve it, but am running into a problem:
The puzzle according to Sokoban Online:
Level: 'Perfect / Level 303 R--13' Nr: 391 Collection: 'Thinking Rabbit Arranged'
After previewing this post I see that this level occurs in "Perfect / Level 303 R--13' Nr: 391 Collection: 'Thinking Rabbit Arranged" (and I guess in the original Perfect as well).
I have been able to open it up to this point:
Beyond this point I have been unable to solve. I keep getting stuck. Can anyone offer me a clue as to what to do now?
Edit: I decided to make my snapshot available for those who may want to see how I reached the point I show above: