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Arthur O'Dwyer0 Hot0 comments2 min read
Colourfields
Over on the (inexplicably login-walled) site “NewEnigma,” Keith Austin writes: Draw a 4-by-4 grid. Colour each square red or blue. Select any square, S, and write 1 in it. Then write 1 in every square you can reach from S by a series of moves, where each move is from a square to an adjacent, horizontally, vertically, or diagonally, square of the same colour […] In brief: What is the maximum number of queenwise-connected monochromatic regions you can make by coloring each square of an \(n\times n\) grid either red or blue?
Source: https://quuxplusone.github.io/blog/2026/08/05/colourfields. 8sync News only summarizes and links out; content copyright belongs to the authors and original sources.
