2004 IMO Problems/Problem 3

Revision as of 23:28, 20 February 2021 by Negia (talk | contribs)

Define a “hook” to be a figure made up of six unit squares as shown in this picture: http://bit.ly/IMO2004P1, or any of the figures obtained by applying rotations and reflections to this figure.

Which $m\times n$ rectangles can be tiled by hooks?