bw squares in a nxn table, largest possible value of n for a few conditions
Source: Dutch NMO 2013 p1
September 6, 2019
maximumcombinatoricstableColoring
Problem Statement
In a table consisting of by small squares some squares are coloured black and the other squares are coloured white. For each pair of columns and each pair of rows the four squares on the intersections of these rows and columns must not all be of the same colour.
What is the largest possible value of ?