chess : engine play

Chess game with animation and music. This is a game between two engines, 4KU and Simplex. The 4KU engine (see https://github.com/kz04px/4ku ) is a simple open source chess engine, which executable only 4 Kb (!) in size but plays rather strong. The Simplex engine (see https://sites.google.com/site/barajandotrebejos/ ) is supposed to be much stronger, but in this game it plays poorly and loses.