Computer beats World Champion
On March 1, 2021, the German Post will issue a special stamp "Deep Blue beats Kasparov". The stamp commemorates the first game of the first "Deep Blue vs Kasparov" match, in which the IBM machine became the first chess computer to beat a reigning World Champion in a game under tournament conditions. This happened on February 10, 1996.
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1.e4 c5 2.c3 d5 3.exd5 Qxd5 4.d4 Nf6 5.Nf3 Bg4 6.Be2 e6 7.h3 Bh5 8.0-0 Nc6 9.Be3 cxd4 10.cxd4 Bb4! 11.a3 Ba5 12.Nc3 Qd6 13.Nb5 Qe7 14.Ne5 Bxe2 15.Qxe2 0-0 16.Rac1 Rac8 17.Bg5 Bb6 18.Bxf6 gxf6 19.Nc4! Rfd8 19...Nxd4? 20.Nxd4 Bxd4 21.Qg4+ 20.Nxb6 axb6 21.Rfd1 f5 22.Qe3 Qf6 23.d5! 23.Qg3+ Kh8 23...Qg6?! 24.Nd6 Rg8 25.Qc3! Rcd8 26.Nxf7+! Qxf7 27.d5+± 23...Rxd5 23...exd5 24.Qxb6 Qxb2 25.Qxb7 Rb8 26.Qxc6 Rxb5 26...Qxb5 27.Qf6± 27.Rc3 f4 28.Rcd3± 24.Rxd5 exd5 25.b3! Kh8 25...d4? 26.Nxd4± 25...Qe6 26.Qd2! 26.Qxb6?? Nd8!-+ 25...Ne7!? 26.Rxc8+ 26.Qg3+ Qg7 26...Qg6 27.Rxc8+ Nxc8 28.Qb8 Qc6 29.Na7 Qc1+ 30.Kh2+- 27.Rxc8+ Nxc8 28.Qc7 Qf8 28...Qa1+ 29.Kh2 Kg7 30.a4! 29.b4 Qe8 30.Qxb7 26...Nxc8 27.Qe8+ Kg7 28.Qxc8 Qa1+ 29.Kh2 Qe5+ 30.g3 Qe2 31.Qxf5 Qxb5 25...Rd8! 26.Qxb6 Rd7 26.Qxb6 Rg8 27.Qc5 27.Qxb7 Qg5 27...d4? 27...Qg5 28.g3 Qd2 29.Qc3+ 29.Nd6 29...Qxc3 30.Rxc3 Rd8 31.Rd3 Kg7 28.Nd6 f4 29.Nxb7 Ne5 30.Qd5 f3 31.g3 Nd3 31...Qf4 32.Kh2? 32.Rc8‼ Qg5 33.Rc5! 33.h4?? Rxc8‼ 34.hxg5 Rc1+ 35.Kh2 Ng4+ 36.Kh3 Nxf2+ 37.Kh4 Rh1# 32...Rxg3‼ 33.Rc8+ Rg8+ 34.Kh1 Rxc8 35.Nc5 Qc1+ 36.Kh2 Qg5 37.Qxe5+ Qxe5+ 38.Kh1 Qg5 39.Ne6 Qg2# 32.Rc7 32.Rc6? Rg5 32...Re8 32...Nf4!? 33.Qxf7 33.Qxf3 33...Nxh3+ 34.Kf1 Qxf7 34...Qa6+ 35.Rc4 35.Rxf7 Ng5 36.Rd7 Rc8 33.Nd6 33.Qxf7 Re1+ 34.Kh2 Qxf7 35.Rxf7 33...Re1+ 34.Kh2 Nxf2 35.Nxf7+ Kg7 35...Qxf7 36.Qd8+ Kg7 37.Rxf7+ Kxf7 38.Qd5+ Ke7 39.Qxf3 36.Ng5+ Kh6 37.Rxh7+ 37.Rxh7+ Kg6 38.Qg8+ Kf5 39.Nxf3 1–0 - Start an analysis engine:
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Comp Deep Blue | - | Kasparov,G | 2795 | 1–0 | 1996 | B22 | Philadelphia m | 1 |
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Spiritus rector of the Deep Blue project was the programmer Feng-Hsiung Hsu. He and Murray Campbell started the project at Carnegie Mellon University. Later, Jerry Brody and Joe Hoane joined them. In 1989, the team took the project to IBM, where development continued under the direction of Dr Chun Jen Tan. One of the ideas was to significantly increase the speed of calculations by parallelising CPUs.
In 1993, experts at the ACM (Association of Computing Machinery) believed that a search depth of 14 half-moves could beat the best human players. In 1996, the IBM team thought their programme was sophisticated enough to challenge the reigning World Champion Garry Kasparov to a match. Kasparov's opponent was a colossus which was about two metres tall, weighed 700 kilograms, and could calculate 200 million positions per second. However, the "computing monster" was invisible to Kasparov.
The match between the supercomputer and Garry Kasparov took place in Philadelphia from 10 to 17 February – at least for the public. Kasparov sat at the Convention Center in Philadelphia in front of a chess board, and an operator transmitted the moves of the World Champion via keyboard to a computer. Then, the moves were sent via a telephone line to Yorktown Heights, New York State, where Deep Blue was calculating. After the machine had decided what to do, its move was sent back to Philadelphia and the operator made it on the board.
In his preparation for the match, Kasparov had considered ten different opening concepts with lines he usually did not play, because he assumed that the computer team had prepared their machine well for his usual openings. Kasparov's sparring partner was the ChessBase Windows program Fritz 4. In many training games against Fritz 4 the World Champion tried the openings he might want to play and then decided which of the lines he would actually use.
In the first game, Kasparov decided to play his favourite opening, the Sicilian. In the first two games he wanted to get to know the computer, preferably in the area he knew best himself. After the first game, however, Kasparov was very impressed by Deep Blue's playing strength, particularly by the move 23.d5! which he thought was a typical human move. After the defeat Kasparov spent a somewhat sleepless night and reconsidered his match strategy.
Basically, however, the strategy was clear. The battle had to be fought with long-term plans that the computer could not calculate. With subtle transpositions in the openings, Kasparov also quickly threw his opponent out of the opening library and made the machine calculate for itself as early as possible.
Kasparov then managed to win the second game after six hours of play with a strategically complicated Catalan and the World Champion became confident again. In the end Kasparov won the match 4:2. He won three games and two games ended in a draw.
Kasparov-Deep Blue 1996
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1.Nf3 d5 2.d4 c6 3.c4 e6 4.Nbd2 Nf6 5.e3 c5 6.b3 Nc6 7.Bb2 cxd4 8.exd4 Be7 9.Rc1 0-0 10.Bd3 Bd7 11.0-0 Nh5? 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 Re8 23.Qd3 g6 24.Re2 Nf5 25.Bc3 h5 26.b5 Nce7 27.Bd2 Kg7 28.a4 Ra8 29.a5 a6 30.b6 Bb8 31.Bc2 Nc6 32.Ba4 Re7 33.Bc3 Ne5 34.dxe5 Qxa4 35.Nd4 Nxd4 36.Qxd4 Qd7 36...Qxd4 37.Bxd4 Re8 38.Rb2 Rc8 39.c6 Rxc6 40.Rxc6 bxc6 41.b7 Ra7 42.Bxa7 Bxa7 43.b8Q Bxb8 44.Rxb8 36...Qc6 37.Bd2 Rd7 38.Bg5 Kf8 39.Bf6 37.Bd2 Re8 38.Bg5 Rc8 39.Bf6+ Kh7 40.c6! bxc6 40...Rxc6 41.Rec2 Rxc2 42.Rxc2 Qe8 43.Qc5 41.Qc5 Kh6 42.Rb2 Qb7 43.Rb4! 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 Bxe5 55.Bxe5 Kxe5 56.b8Q+ 43...Kh7 44.Qe7 Qxe7 45.Bxe7 Re8 46.b7 Ra7 47.Bc5 Rd8 48.Bxa7 Bxa7 49.Rxc6 Bb8 50.Rc8 44.b7 1–0 - Start an analysis engine:
- Try maximizing the board:
- Use the four cursor keys to replay the game. Make moves to analyse yourself.
- Press Ctrl-B to rotate the board.
- Drag the split bars between window panes.
- Download&Clip PGN/GIF/FEN/QR Codes. Share the game.
- Games viewed here will automatically be stored in your cloud clipboard (if you are logged in). Use the cloud clipboard also in ChessBase.
- Create an account to access the games cloud.
Kasparov,G | 2795 | Comp Deep Blue | - | 1–0 | 1996 | D30 | Philadelphia m | 6 |
Comp Deep Blue | - | Kasparov,G | 2795 | 0–1 | 1996 | C47 | Philadelphia m | 5 |
Kasparov,G | 2795 | Comp Deep Blue | - | ½–½ | 1996 | D46 | Philadelphia m | 4 |
Comp Deep Blue | - | Kasparov,G | 2795 | ½–½ | 1996 | B22 | Philadelphia m | 3 |
Kasparov,G | 2795 | Comp Deep Blue | - | 1–0 | 1996 | E04 | Philadelphia m | 2 |
Comp Deep Blue | - | Kasparov,G | 2795 | 1–0 | 1996 | B22 | Philadelphia m | 1 |
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The decade between 1996 and 2006 was an exciting time for the development of chess computers and computer programmes, and the "man versus machine" battle of wits captivated not only chess enthusiasts. Within their calculating horizon the machines made no tactical mistakes, but beyond their horizon they were practically blind, while humans could pursue long-term plans.
And the computers still fell for tricks, such as the small opening transpositions Kasparov used. But today, 25 years later, even world class players hardly have a chance against the programs. In 1996, thousands of spectators watched the match in the Philadelphia Convention Center, and several million followed the games on the internet, which was still in its infancy at the time.

Kasparov-Deep Blue, 1997
In 1997, a rematch took place, which attracted even more attention. Deep Blue had been further improved and this time Kasparov won the first game, but then resigned a drawn position in the second game. Kasparovs tried with all his might to win the match, but in the sixth game he went for a line in the Caro-Kann Defence that was considered to be bad if White was willing to sacrifice material. However, Deep Blue "knew" the refutation, sacrificed material, and won the game and the match.
Replay and check the LiveBook here |
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1.e4 c6 2.d4 d5 3.Nc3 dxe4 4.Nxe4 Nd7 5.Ng5 Ngf6 6.Bd3 e6 7.N1f3 h6? 8.Nxe6 Qe7? 8...fxe6 9.Bg6+ Ke7 10.0-0 Qc7 11.Re1 Kd8 12.c4 12.Rxe6 Bd6 13.Re1 Nf8 14.Bd3 Bg4 12...Bb4 13.Re2 Nf8 14.Ne5 14.Bc2 Bd6 15.g3 Qe7! 14...Nxg6 15.Nxg6 Re8 16.c5 Qf7! 17.Ne5 Qh5 18.f3 18.Nc4 b5 19.Ne5 Bd7 20.a4 bxa4 21.Rxa4 a5 22.f3 Re7 18...Ba5 19.g4 Qh3 20.Rg2 Bc7 21.Rg3 Qh4 22.Ng6 Bxg3! 23.Nxh4 Bxh4 9.0-0 fxe6 10.Bg6+ Kd8 11.Bf4 b5 11...Ne8 12.Bg3 Nd6 13.Re1 Nf6 14.Bxd6 Qxd6 15.Ne5 Qd5 16.Nf7+ Kc7 17.Nxh8 Qg5 18.Qd3 Bd6 19.Nf7 Bxh2+ 20.Kxh2 Ng4+ 21.Kg1 Qf6 22.Qg3+ e5 23.Nxe5 11...Qb4 12.a3 Qb6 12...Qxb2 13.Qe2 Nd5 14.Bd2 Bd6 15.Qxe6 Kc7 16.Rfb1 Qxa1 17.Rxa1 Ne5 18.Qxd6+ Kxd6 19.Nxe5 Kc7 20.c4 Ne7 21.Bf4 Rf8 22.Nf7+ Kd7 23.Bh5 b5 24.c5 Nf5 25.Ne5+ Ke6 26.Nxc6 Bb7 27.Re1+ Kf6 28.d5 g6 29.Re6+ Kg7 30.Be5+ Kg8 31.Rxg6+ Kh7 32.g4 Bxc6 33.gxf5 Rxf5 34.Rg7+ Kh8 35.Rg5+ Rxe5 36.Rxe5 Bd7 13.Qe2 Be7 14.c4 Rf8 15.Bg3 a5 16.Rfe1 c5 17.d5 e5 18.Nxe5 Nxe5 19.Qxe5 Ng8 20.Qxg7 Qf6 21.Qh7 Ra6 22.Re3 Bf5 23.Bxf5 Qxf5 24.Qxf5 Rxf5 25.Rae1 Kd7 26.f3 Bf6 27.Rd3 Bxb2 28.Rb1 Rb6 29.Kf1 Rff6 30.d6 h5 31.Be5 Re6 32.Rxb2 Rxb2 33.Bxb2 Rxd6 34.Rxd6+ Kxd6 35.Ke2 Ne7 36.g4 11...Nd5 12.Bg3 Qb4 13.Re1 13.Qe2 Be7 14.c4 N5b6 15.b3 Bf6 16.Rad1 Qe7 17.Rfe1 Nf8 18.Be4 Bd7 19.Qd3 Qf7 20.a4 a5 21.Qe3 Ra6 22.Qf4 Bc8 23.d5 cxd5 24.cxd5 Ke8 25.Bd3 Ra8 26.Bb5+ Bd7 27.dxe6 Nxe6 28.Qd6 Bxb5 29.Rxe6+ Be7 30.axb5 13...Be7 14.Qe2 14.a3 Qxb2 15.c4 Nc3 16.Qd3 Na4 17.Qe3 Nf8 18.Ne5 Nxg6 19.Nxg6 Rf8 20.Nxf8 Bxf8 21.Qf4 Ke8 22.Qf5 Nc3 23.Rxe6+ Bxe6 24.Qxe6+ Be7 25.Re1 14...Bf6 15.c4 Ne7 16.a3 Qb3 17.Bd3 Nf5 18.Bxf5 exf5 19.Qe6 Qb6 20.c5 Nxc5 21.Qd6+ Nd7 22.Ne5 Bxe5 23.Rxe5 Re8 24.Rxe8+ Kxe8 25.Re1+ Ne5 26.Rxe5+ Kf7 27.Re7+ 12.a4 Bb7 12...bxa4 13.Rxa4 Nd5 14.Bg3 13.Re1 Nd5 13...b4 14.c4 bxc3 15.bxc3 Nd5 16.Bg3 Nxc3 17.Qb3 Qb4 18.Qxe6 Be7 19.Bf5 Nb6 20.a5 14.Bg3 Kc8 14...Qb4 15.Rxe6 Be7 16.c3 Qxb2 17.c4 N5f6 17...bxc4 18.Rb1 Nc3 19.Rxb2 Nxd1 20.Rxb7 18.Ne5 Nxe5 19.dxe5+ Nd7 20.Bf5 15.axb5 cxb5 16.Qd3 Bc6 16...Nc7 17.Qc3 Nf6 18.Rxe6 Qd8 19.Bf5 Kb8 20.Ne5 Nfd5 21.Nc6+ Bxc6 22.Qxc6 16...a6 17.Bf5 17.Bf5 exf5 17...Nb4 18.Qc3 Kb7 19.Rxe6 Qd8 20.d5 Bxd5 21.Re8 17...Nc7 18.Bxc7 Kxc7 19.Rxe6 Qd8 20.Qc3 Bd6 21.Ne5 Nb8 22.Be4 18.Rxe7 Bxe7 18...Nxe7 19.Qc3 Nb8 19...Kb7 20.Qa5 20.Ne5 19.c4 19.c4 bxc4 19...Nb4 20.Qxf5 bxc4 21.Ne5 20.Qxc4 Nb4 21.Re1 Re8 22.Nh4 Nb6 23.Qf7 N6d5 24.Nxf5 Kd8 25.Nxg7 1–0
- Start an analysis engine:
- Try maximizing the board:
- Use the four cursor keys to replay the game. Make moves to analyse yourself.
- Press Ctrl-B to rotate the board.
- Drag the split bars between window panes.
- Download&Clip PGN/GIF/FEN/QR Codes. Share the game.
- Games viewed here will automatically be stored in your cloud clipboard (if you are logged in). Use the cloud clipboard also in ChessBase.
- Create an account to access the games cloud.
Comp Deep Blue | - | Kasparov,G | 2785 | 1–0 | 1997 | B17 | New York Man-Machine | 6 |
Kasparov,G | 2785 | Comp Deep Blue | - | ½–½ | 1997 | A07 | New York Man-Machine | 5 |
Comp Deep Blue | - | Kasparov,G | 2785 | ½–½ | 1997 | B07 | New York Man-Machine | 4 |
Kasparov,G | 2785 | Comp Deep Blue | - | ½–½ | 1997 | A29 | New York Man-Machine | 3 |
Comp Deep Blue | - | Kasparov,G | 2785 | 1–0 | 1997 | C93 | New York Man-Machine | 2 |
Kasparov,G | 2785 | Comp Deep Blue | - | 1–0 | 1997 | A07 | New York Man-Machine | 1 |
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In press conferences and interviews Kasparov had always declared that he was defending the "honour of mankind" against the world's best chess computer. After Kasparov lost the match, some professionals were not well disposed towards Kasparov. Viktor Kortschnoi commented bitingly: "Nobody asked Kasparov to play for the honour of mankind, and above all nobody asked him to lose it then."
As early as 2012, the Uganda Post Office dedicated a set of special stamps to the battle "Man vs Machine".
The post of Niger also issued a stamp about computer chess.

Translation from German: Johannes Fischer
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