Man Vs Machine....

Posted by redthil On 2/18/2009 09:43:00 AM

This was the day in history, when Man replied to the machines attack so strongly and beat machine. No idea what i'm talking about. here it is, This was the day on 1996, when Kasparov - a chess grandmaster, for the first time defeated "Deep Blue" - a super computer capable of evaluating 100 million positions per second. And did you notice the first sentence "Man replied..."? yes... Deep Blue won the first game against Kasparov and stunned the entire chess world. Playing White, Deep Blue won this first game in the match, though Kasparov rebounded over the next 5 games, winning 3 and drawing 2, to soundly beat the machine in the 1996 match. This game (Deep Blue - Kasparov, 1996, Game 1) is world-famous, because it was the first game won by a computer against a reigning world champion under normal chess tournament conditions (in particular, normal time controls). But in May 1997, an updated version of Deep Blue defeated Kasparov 3.5-2.5 in a highly publicised six-game match. The match was level after 5 games but Kasparov was crushed in Game 6. This was the first time a computer had ever defeated a world champion in match play.

I always read the moves of Deep Blue, in its first game against Kasparov in 1996, with wonder. So here are moves along with its comments of experts...

[Event "Deep Blue - Kasparov, 1996, Game 1"]
[Site "Philadelphia, PA USA"]
[Date "1996.02.10"]
[Round "1"]
[White "Deep Blue"]
[Black "Kasparov, Gary"]
[Result "1-0"]
[Opening "Sicilian Defense 2.c3"]
[Annotator "Wheeler, David A."]

1. e4 c5
2. c3
{It's more common to play 2. Nf3, but Kasparov has deep experience
with that line,so white's opening book goes in a different direction.}

2..... d5
3. exd5 Qxd5
4. d4 Nf6
5. Nf3 Bg4
6. Be2 e6
7. h3 Bh5
8. O-O Nc6
9. Be3 cxd4
10. cxd4 Bb4
{A more common move here is Be7. This was a new approach by Kasparov,
developing the bishop in an unusual way.
Whether or not it's a good approach is debated.
After this move, the computer left its opening book
and began calculating its next move.}

11. a3 Ba5
12. Nc3 Qd6
13. Nb5 Qe7?!
{This allows white to make its pieces more active.
Other moves, which would probably be better, include Qb8 and Qd5.}

14. Ne5! Bxe2
15. Qxe2 O-O
16. Rac1 Rac8
17. Bg5
{Black now has a problem, especially with the pinned knight on f6.}

17.... Bb6
18. Bxf6 gxf6
{Kasparov avoids ... Qxf6? because white would gain material with
19. Nd7. Note that Kasparov's king is now far more exposed.}

19. Nc4! Rfd8
20. Nxb6! axb6
21. Rfd1 f5
22. Qe3!
{This is an excellent place for the white queen.}

22... Qf6
23. d5!
{Kasparov commented that he might have offered this pawn sacrifice
himself in this position, since it hurt black's pawn structure,
opened up the board, and black's exposed king suggested that
there was probably a way to exploit the result.
Kasparov has been attacking the d4 pawn,
and the computer wisely decided to advance it for an attack
instead of trying to defend it.}

23... Rxd5
24. Rxd5 exd5
25. b3! Kh8?
{Kasparov attempts to prepare a counter-attack,
by preparing to move his rook to file g,
but it won't work. Burgess suggests that 25....
Ne7 Rxc8+ would have better, though white would still have
some advantage.
Indeed, after this point on it's difficult
to identify any move
that will dramatically help black.}

26. Qxb6 Rg8
27. Qc5 d4
28. Nd6 f4
29. Nxb7
{This is a very "computerish"/materialistic move; white is grabbing
an undeveloped pawn for a small gain in material.
However, the computer has not identified any threat of checkmate
or other risks from black, so it simply acquires the material.}

29.... Ne5
30. Qd5
{The move 30. Qxd4?? would be terrible, because Nf3+ would win
the white queen.}

30.... f3
31. g3 Nd3
{The move 31... Qf4 won't work, because of 32. Rc8! Qg5 33. Rc5!}

32. Rc7 Re8
{Kasparov is attacking, but the computer has correctly determined that
the attack is not a real threat.}

33. Nd6 Re1+
34. Kh2 Nxf2
35. Nxf7+ Kg7
36. Ng5 Kh6
37. Rxh7+
{expecting .... Kg6 's strength is overwhelming.
White will have lots of ways to defeat black,
while black has no real way to attack white. 38. Qg8+ Kf5 39. Nxf3,
Black cannot meet the simultaneous threats of
40. Nxe1, 40. Rf7 and 40. Qd5+. Kasparov resigned. }

Looks like machine language!!!!!! here is a guide to help you out in understanding those lines in the way it has to be interpreted. This way of representing moves is called as "Algebraic Chess Notation".. hope you understood the moves, and got the sequence. :)

I didn't know that....

Indian Defence
Indian defences are chess openings characterized by the moves 1.d4 Nf6, although transpositions are important and many of the positions can be reached by several move orders. They are all to varying degrees hypermodern defences, where Black invites White to establish an imposing presence in the centre with the plan of drawing it out, undermining it, and destroying it. Although Indian defences were championed in the 1920s by players in the hypermodern school, they were not fully accepted until Soviet players showed in the late 1940s that these systems are sound for Black. Since then, Indian defences have been the most popular Black replies to 1.d4 because they offer an unbalanced game with chances for both sides.

The Indian defences are considered more ambitious and double-edged than the symmetrical reply 1...d5. In the Queen's Gambit Declined, Black accepts a cramped, passive position with the plan of gradually equalizing and obtaining counterplay. In contrast, breaking symmetry on move one leads to rapid combat in the centre, where Black can obtain counterplay without necessarily equalising first.

The usual White second move is 2.c4, grabbing a larger share of the centre and allowing the move Nc3, to prepare for moving the e-pawn to e4 without blocking the c-pawn. Black's most popular replies are

* 2...e6, freeing the king's bishop and leading into the Nimzo-Indian Defence, Queen's Indian Defence, Bogo-Indian Defence, Modern Benoni, or regular lines of the Queen's Gambit Declined,
* 2 ... g6, preparing a fianchetto of the king's bishop and entering the King's Indian Defence or Grünfeld Defence, and
* 2 ... c5, the Modern Benoni, with an immediate counter-punch in the centre.

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