Comment by ramly

This is really neat. Thank you and @thethirdone for putting in the effort to tackle this! Love these creative takes to add efficiency boosts. You guys make HN awesome.

> Multiple white pieces makes the code significantly more complex, but it simply adds a little bit to the statespace.

That would be my guess too. Especially the sacrifice mechanic that needs to be timed just right after X moves/transformations of each white piece.