McCaw won the part 2, steps competition. Behold:

Let me see…

• Generated code — a golf of 6565.
• Coming from both ends and twice from the middle at the same time.

Yeah, I guess that’s it! But, just for fun, let’s look at the case 2 program, ignoring all the rules not used.

HEADS AAABBBBCCC
START .......... S000  ***+*+**** SDDLLDDSLL
S000  .......... S001  ***+*+**** SSDLLDDSSL
S001  .......... S002  +******+++ RRRSDSLUUU
S002  .@*.....@* S044  +**+++++** RRRDDLLUUU
S044  ...+.+.... S04D  +++*+*++++ RRRLLDDUUU
S04D  *@.@.@.*@. S04D  **+*+*+**+ RRRLLDDUUU
S04D  **+*+*+**+ STOP  ********** SSSSSSSSSS

2 steps to spread the heads, and writing the 1st +’s in the corner as well. And then we go! There are a lot of rules for S04D. The 3 head combinations from the ends can always move closer to the corner. The 2 head combinations beginning in the corner have to dance a little (!), when they maneuver through a hole between the barrels.

Code .