It's MUCH more costly.
Brute force always is. Isn't going to stop me from trying though. I halfway implemented a brute-force a few days ago before I realized that I'd overlooked a big mistake (it swapping the first two boulders, repeatly, until memory failure).

Besides. These are cavemen, remember?
Og move big rock here. Rock heavy. Og make Ug do work.
Code:
You try to move the boulder, but in vain.
```
`@`
```