With six different kinds of pieces, 64 squares to move in, and billions of possible combinations of moves, chess is a good test for a computer. The number of distinct 40-move games is far greater than the number of electrons in the visible universe. For all intents and purposes: almost infinite.
Gary Kasparov is the world’s best chess player. Deep Blue is a computer. It’s humanity v machine. There’s a lot at stake and things turn controversial fast with accusations of cheating, a very human meltdown and a computer that hallucinates.