ZarankiewiczDB,

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Matrix for z(14,17)

1111
1111
1111
1111
1111
111
1111
1111
111
1111
1111
111
111
111
111
1111
11111

Found by the scaffold algorithm.

(0.496911479 seconds, score = 63, 3634 recursive calls, max depth = 15)

lower bound = 63, submitted by Andrew Kay on April 22nd, 2016 (link, raw)