Author: Mike Byrne
Date: 20:48:26 05/30/04
This is semi-follow up to Jorge post regardng Game 6 of the first match between
Kasparov and Deep Blue , but not directly so I started a new thread.
I witness this game live in Philadelphia with my brother-in-law. If anybody is
interested in a program from the match . e-mail me privately. There was
laughter after Nh5, it certainly did look like a computer move at the time..
Annotations Copyright by Chessbase
[Event "Philadelphia m"]
[Site "Philadelphia"]
[Date "1996.02.17"]
[Round "6"]
[White "Kasparov, Garry"]
[Black "Comp Deep Blue"]
[Result "1-0"]
[ECO "D30"]
[WhiteElo "2795"]
[Annotator "Friedel"]
[PlyCount "85"]
[EventDate "1996.02.??"]
[Source "ChessBase"]
1. Nf3 {Keene Borik} d5 2. d4 c6 3. c4 e6 4. Nbd2 Nf6 5. e3 c5 {a tempo-losing
move to deviate from game four. The Deep Blue team has prepared a line that
should open up the position.} 6. b3 Nc6 7. Bb2 cxd4 8. exd4 Be7 9. Rc1 O-O 10.
Bd3 Bd7 11. O-O Nh5 $2 {
A very strange move which absolutely nobody at the site liked.} 12. Re1 Nf4 13.
Bb1 Bd6 14. g3 Ng6 15. Ne5 Rc8 16. Nxd7 Qxd7 17. Nf3 Bb4 18. Re3 Rfd8 19. h4
Nge7 20. a3 Ba5 21. b4 Bc7 22. c5 {Four consecutive pawn advances which drive
back all the black pieces, which are stumbling over each other on the
queenside.} Re8 23. Qd3 g6 24. Re2 Nf5 25. Bc3 h5 26. b5 {Keene calls this
"Kasparov's strategy of strangulation" and points out that 26.b5 doesn't just
attack the knight but establishes "a giant, crawling mass of white pawns,
rather resembling a colossal army of soldier ants on the move."} Nce7 27. Bd2
Kg7 28. a4 Ra8 29. a5 a6 30. b6 Bb8 {# Kasparov has shut the black bishop and
rook out of play to the end of the game. Black's position is lost.} 31. Bc2 Nc6
32. Ba4 Re7 33. Bc3 Ne5 {actually accelerating the end.} 34. dxe5 Qxa4 35. Nd4
Nxd4 36. Qxd4 Qd7 {IM Otto Borik that other variations also lose:} (36... Qxd4
37. Bxd4 {and Rb2, c6 wins, e.g.} Re8 38. Rb2 Rc8 39. c6 Rxc6 40. Rxc6 bxc6 41.
b7 Ra7 42. Bxa7 Bxa7 43. b8=Q Bxb8 44. Rxb8) (36... Qc6 37. Bd2 Rd7 38. Bg5 Kf8
39. Bf6 {and now f3, Rg2 and g4 wins.}) 37. Bd2 Re8 38. Bg5 Rc8 39. Bf6+ Kh7
40. c6 $1 bxc6 (40... Rxc6 41. Rec2 Rxc2 42. Rxc2 Qe8 43. Qc5 {wins}) 41. Qc5
Kh6 42. Rb2 Qb7 43. Rb4 $1 {And the Deep Blue team reseigned for the machine.
Why did Black resign? IM Malcolm Pein explained this on the Internet: "Black
has four pieces left plus his king. The rook on a8 and the bishop on b8 cannot
move. If the queen on b7 moves it allows b7, winning a rook. If the rook on
c8 moves White can play Qxc6, forcing an exchange of queens. After that there
are many ways to win, the most prosaic being double on the c file and play Rc8.
So we are left with Kh7! The simplest way then is Qe7 Qxe7 Bxe7 threatening b7
and if Rc8-e8 then b7 Ra7 Bc5 etc. Note that had Kasparov left his rook on b2
Black would have ...Bxe5 gaining a tempo."} (43. Rb4 Qd7 (43... Re8 44. Qxc6
Qxc6 45. Rxc6 Kh7 46. b7 Ra7 47. Rbb6 Rg8 48. Rc8 d4 49. Rbc6 g5 (49... d3 50.
Rxg8 Kxg8 51. Rc8+ Kh7 52. Rh8#) 50. Rxg8 Kxg8 51. Rc8+ Kh7 52. Rh8+ Kg6 53.
Rg8+ Kf5 54. f3 {Threat: Rxg5#} Bxe5 55. Bxe5 {Threat: ditto} Kxe5 56. b8=Q+ {
and mate.}) (43... Kh7 44. Qe7 Qxe7 45. Bxe7 Re8 46. b7 Ra7 47. Bc5 Rd8 48.
Bxa7 Bxa7 49. Rxc6 Bb8 50. Rc8 {winning}) 44. b7) 1-0
[d]2rr2k1/pp1qnppp/2n1p3/3p4/1bPP3P/1P2RNP1/PB3P2/1BRQ2K1 w - - 0 20
There was much disussion in the audience about 20.Bxh7! - Yasser indicating
that against a human , Kasparov most definitely would have played that move.
After the game, Kasparov indicated as such - but he did not play it because he
saw no reason to take the chance against Deep Blue. He was confident that he
had a "won" game at this point and the was no reason to take unnecceary risks.
Hsu also confirmed later that Deep Blue also like Bxh7 as the best move and it
saw white with a winning score.
Start your engines...
4:08 for Crafty Morphy - I did not test other personalities or other engines.
Crafty v19.13 SE [Morphy] (2 cpus)
SE code enabled
White(1): st 99999
search time set to 99999.00.
White(1): 2rr2k1/pp1qnppp/2n1p3/3p4/1bPP3P/1P2RNP1/PB3P2/1BRQ2K1 w - - 0 20
White(1): go
clearing hash tables
time surplus 0.00 time limit 1666:39 (1666:39)
time surplus 0.00 time limit 1666:39 (1666:39)
depth time score variation (1)
1 0.00 -0.20 1. Qe2 dxc4 2. Rxc4
1-> 0.02 -0.20 1. Qe2 dxc4 2. Rxc4
2 0.02 -0.20 1. Qe2 dxc4 2. Rxc4
2-> 0.02 -0.20 1. Qe2 dxc4 2. Rxc4
3 0.04 -0.37 1. Qe2 dxc4 2. bxc4 b6
3 0.04 -0.15 1. a3 Bd6 2. Qe2 dxc4 3. Rxc4
3-> 0.04 -0.15 1. a3 Bd6 2. Qe2 dxc4 3. Rxc4
4 0.05 -0.15 1. a3 Bd6 2. Qe2 dxc4 3. Rxc4
4 0.07 0.09 1. Ng5 h6 2. Bh7+ Kh8 3. cxd5 Nxd5
4-> 0.07 0.09 1. Ng5 h6 2. Bh7+ Kh8 3. cxd5 Nxd5
(s=2)
5 0.07 -1 1. Ng5
5 0.08 -0.41 1. Ng5 h6 2. Bh7+ Kh8 3. Nxf7+ Kxh7
4. Nxd8 Rxd8
5 0.11 0.01 1. a3 Ba5 2. Ng5 Nf5 3. Bxf5 exf5
5-> 0.13 0.01 1. a3 Ba5 2. Ng5 Nf5 3. Bxf5 exf5 (s=3)
6 0.18 0.14 1. a3 Bd6 2. Ng5 h6 3. Bh7+ Kh8 4.
cxd5 Nxd5 (s=2)
6-> 0.24 0.14 1. a3 Bd6 2. Ng5 h6 3. Bh7+ Kh8 4.
cxd5 Nxd5 (s=3)
7 0.38 0.09 1. a3 Ba5 2. Qe2 dxc4 3. bxc4 Bb6 4.
Be4 Ng6 (s=2)
7-> 0.58 0.09 1. a3 Ba5 2. Qe2 dxc4 3. bxc4 Bb6 4.
Be4 Ng6 (s=3)
8 0.83 0.17 1. a3 Ba5 2. Qe2 dxc4 3. bxc4 Rf8 4.
Be4 f5 5. Bc2 (s=2)
8-> 1.36 0.17 1. a3 Ba5 2. Qe2 dxc4 3. bxc4 Rf8 4.
Be4 f5 5. Bc2 (s=4)
9 2.07 0.13 1. a3 Ba5 2. Qe2 dxc4 3. bxc4 Re8 4.
Be4 f5 5. Bc2 Ng6 (s=3)
9-> 4.19 0.13 1. a3 Ba5 2. Qe2 dxc4 3. bxc4 Re8 4.
Be4 f5 5. Bc2 Ng6 (s=5)
10 6.47 0.13 1. a3 Ba5 2. Qe2 Re8 3. Ne5 Nxe5 4.
Rxe5 Ng6 5. Rg5 Bd8 6. Rg4 dxc4 7.
Rxc4 Rxc4 8. bxc4 (s=4)
10-> 11.80 0.13 1. a3 Ba5 2. Qe2 Re8 3. Ne5 Nxe5 4.
Rxe5 Ng6 5. Rg5 Bd8 6. Rg4 dxc4 7.
Rxc4 Rxc4 8. bxc4 (s=2)
11 19.25 0.22 1. a3 Ba5 2. Qe2 a6 3. b4 Bb6 4. c5
Bc7 5. Ng5 Nf5 6. Bxf5 exf5
11 48.19 0.24 1. Ng5 h6 2. Bh7+ Kh8 3. Qh5 f6 4.
Nxe6 Kxh7 5. Qg4 Ng6 6. h5 Nf8 7. cxd5
11-> 48.19 0.24 1. Ng5 h6 2. Bh7+ Kh8 3. Qh5 f6 4.
Nxe6 Kxh7 5. Qg4 Ng6 6. h5 Nf8 7. cxd5
(s=2)
12 1:27 0.24 1. Ng5 h6 2. Bh7+ Kh8 3. Qh5 Qe8 4.
Bd3 Kg8 5. Nf3 dxc4 6. bxc4 b6 7. Be4
Qd7
12 4:08 +1 1. Bxh7+!!
12 5:29 1.18 1. Bxh7+ Kxh7 2. Ng5+ Kg6 3. Qd3+ Nf5
4. g4 Bd6 5. Rce1 Nb4 6. Qb1 Kh6 7.
gxf5 exf5 8. a3
12-> 5:29 1.18 1. Bxh7+ Kxh7 2. Ng5+ Kg6 3. Qd3+ Nf5
4. g4 Bd6 5. Rce1 Nb4 6. Qb1 Kh6 7.
gxf5 exf5 8. a3 (s=2)
? 13 5:30 1/39* 1. Bxh7+
White(1): ?
time=5:45 cpu=190% mat=0 n=325417868 fh=91% nps=941K
ext-> chk=14283335 cap=901394 pp=275774 1rep=1401979 mate=38576
predicted=0 nodes=325417868 evals=98010115 50move=0
endgame tablebase-> probes=0 hits=0
SMP-> split=865 stop=163 data=5/128 cpu=10:58 elap=5:45
White(1): Bxh7+
time used: 5:45
Black(1):
This page took 0.01 seconds to execute
Last modified: Thu, 15 Apr 21 08:11:13 -0700
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