Level 156 solution

Solver-verified route

1. Slide Block 1 up.
2. Slide Block 2 up.
3. Slide Block 2 up.
4. Slide Block 3 left.
5. Slide Block 6 down.
6. Slide Block 4 up.
7. Slide Block 4 right.
8. Slide Block 2 down.
9. Slide Block 7 down.
10. Slide Block 7 left.
11. Slide Block 1 up.
12. Slide Block 5 up.
13. Slide Block 8 right.

A clean exit route in 13 slides — fewer slides than this on your own run means you beat the solver's par.