In chess (like in many other sports) a game can end in a win, loss or draw. Now suppose we let 2 exact equal chess programs play a match of 100 games then what would be the score? 50-50? Or? What if we play 1000 games, 10,000 or even 100,000 games, when do we always get a 50.0% score? The answer might surprise you, see: http://www.top-5000.nl/example1.html http://www.top-5000.nl/example2.html http://www.top-5000.nl/example3.html