ZarankiewiczDB,

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Matrix for z(12,15)

11111
1111
11111
1111
1111
1111
1111
1111
1111
1111
1111
11111

Found by the scaffold algorithm.

(0.023456892 seconds, score = 51, 21 recursive calls, max depth = 15)

weight = 51, submitted by Andrew Kay on April 22nd, 2016 (link, raw)