This is also very good. I like the level of not a lot of tricks, relying on the brain and logic, not like the others are not the game that can be but the difficulties that exist; especially for those who don't know the tricks. Thank you for sharing.
Nicely done puzzle that you definitely can't rush through as B will just fall and get stuck. So this one teaches you the value of patience. Nice use of dead-ends too. Thanks for sharing!