Colouring a cube of side 7
Source: Tuymaada 2013, Day 2, Problem 5 Juniors
July 22, 2013
geometry3D geometrycombinatorics proposedcombinatorics
Problem Statement
Each face of a cube is divided into unit squares. What is the maximum number of squares that can be chosen so that no two chosen squares have a common point?A. Chukhnov