I was too lazy to play the game at http://106.186.25.143/kuku-kube/en-3/ so I wrote this script to make it a bit easier. Just paste this in your browser console (right click - inspect element, console tab) then start the game

kuku-hack.js

$("#box").click( function() {
    $('#box').children().filter(function(){
		if($('#box').children().first().css('backgroundColor')!=$(this).css('backgroundColor')){
			$(this).css('background-color','lime');
			$(this).css('border-width','5px');
			$(this).css('border-color','red');
		}
	});
});