Garry Kasparov lost to Deep Blue supercomputer in a chess due to computer failure

One of the greatest chess games of all time - is, without a doubt, the battle of Garry Kasparov and Deep Blue supercomputer from IBM, in 1997. It was the second game of Kasparov and supercomputer rematch machine.

The first batch of the game was very difficult and tense, Kasparov was the first advantage, but starting with 44 stroke, he had ceased to understand the logic of the game machine, and eventually lost the entire match. After some time, even Kasparov accused IBM engineers in the "cheating": manipulation by machines, which led to the defeat. 17 years later the situation is cleared up - Kasparov lost due to errors of the computer in the first installment of the entire battle.

What is Deep Blue?

At the time, Deep Blue was really very powerful system. The supercomputer is a system with 32-core (32-node) processor IBM POWER2, ​​each of which was connected to the eight specialized processors chess VLSI, running on the server platform RS / 6000. Deep Blue was a code written in C, and in the operating system used IBM AIX. Deep Blue, proschityval 200 million positions per second, and its peak performance is 11, 38 gigaflops.


A little about Deep Blue by its creator i>

Work on the creation of specialized computer systems conducted at IBM, since 1950. In 1985, the first computer for solving highly specialized chess problems. It was built by a graduate student at Carnegie Feng-hsiung Hsu, and this system is called ChipTest.

A little later, Murray Campbell already together with Feng-hsiung Hsu started to work on the creation of Deep Blue, becoming employees of IBM. The first version of the system lost to Kasparov in 1989. Second defeat of the human system received in 1996. And already in 1997 all games were won by the machine.

The loss of human machine

44 course of the critical parties Deep Blue did all recognize as senseless move: rearranged the rook with D5 to D1. This move gave no prospects - neither positional nor any other. Kasparov won this game, but the logic of the computer to understand stopped , and the next two games (2nd and 6th) passed losing all battle.



Now it turned out that the move was a common failure. Previously, IBM engineers have programmed Deep Blue to perform a safe move, if it happens to any failure. And when the failure occurred, the computer simply pushed the figure, rather than to make a calculated positional move that did not bring anything, no gain, no weakening.

That's a common mistake of the computer bug led to the defeat human chess epochal battle of "man versus machine".

For explanation of this error has been made a documentary short film, which you can посмотреть here (habraparser misses insert the code).

Source: habrahabr.ru/post/241531/