ZarankiewiczDB,

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Matrix for z(8,26)

1111111
1111111
1111111
111111
111111
111111
1111111
1111111

Found by the scaffold algorithm.

(0.024855393 seconds, score = 53, 35 recursive calls, max depth = 29)

lower bound = 53, submitted by Andrew Kay on April 22nd, 2016 (link, raw)