I just checked, but insertions are wrong! NOOOOO
I am an idiot. The first insertion should be B U B' D B U' B'
D'
The second insertion should be B' D'
F2 D B D'
F2 D
Everything went so nice, untill I got stressed during the insertions. So I failed at the 10 minute AND the 60 minute mark, but I got a new (lucky) PB of 18 anyway.
Entire solution:
Tripple X-Cross: R' L' F' B'
All but 3 corners with Heise blocks and luck: B * D2 F', D2 B', D F D', L
Insert corner 3-cycle at the * : B' D'
F2 D B D'
F2 D
Total solution (18): R' L' F' B' D' F2 D B D' F2 D' F' D2 B' D F D' L
15 was optimal: D' B2 R2 D2 L F R' B' R U2 L' U2 D' R U2 (15f*)
After R' optimal was still 15 (starting with L' would also still be 15 optimal)
After R' L' optimal was 14
After R' L' F' optimal was 13 (starting with R' L' F' would also be 13 optimal)
After R' L' F' B' optimal was 13
After R' L' F' B' D' optimal was 13 and that's what I needed
This was stressfull!
And thanks for the 2-corner-twist Mike. I have seen it a couple of times before and if I had known it during the Polish Open 2007 I would have been REALLY happy (
http://games.groups.yahoo.com/group/fewestmoveschallenge/message/1549)