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As the next step in my exploration of the quarter turn metric, after finishing a proof of an upper bound of 30, I decided to run 25 cosets all the way (until I have optimal solutions for all positions). Unlike my runs in the half turn metric in November of 2008, I went ahead and made the search phase run in parallel. In addition, I acquired a newer, faster machine (a Dell Studio XPS with an Intel i7 920 processor).

I decided to run the same 25 cosets I ran for the half turn metric. The results are summarized in the table below.

Sequence             9 10  11  12   13    14     15      16       17        18         19         20         21         22       23