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z(19,25) = 103

By deleting 12 rows and 6 columns from the finite projective plane of order 5.

lower bound = 103, submitted on April 27th, 2016 (link)

Searching for matrices of weight greater than 103, all scaffolds were eliminated without search.

upper bound = 103, submitted by Andrew Kay on April 27th, 2016 (link)

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