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Kasparov then curled up into a ball by setting up a Hedgehog Defense. The idea is that the computer will not know what to do, and so will flounder around, finally creating fatal weaknesses.
However, Kasparov played too conservatively. He could have played 17. ... b5. This would have opened up the position and would have gotten rid of the only weakness in Kasparov's position, the pawn on b6. On each of the following two moves, Kasparov could have played Nc5 followed by d5, again breaking open and equalizing the position.
Instead, Kasparov continued with his plan, which was to do nothing. This plan seemed to be on the verge of working. The computer seemingly had no concrete way to proceed. However, the computer did a very un-computer like thing, making positional moves to slowly and carefully build up its position. One even had to wonder if the computer might have a little man hiding in the box.
Finally, the computer sacrificed a pawn and Kasparov found a way to hold it. The players reached the 40-move time control, with Kasparov a pawn ahead.
The first thoughts were that Kasparov was going to win now. However, further examination of the 40-move position showed that Kasparov has no good place to put his rook and in fact could not stop the computer from winning back the pawn with the advantage.
Kasparov spent more than 20 minutes on move 41 and finally found a way to hold a draw, but just barely. After the computer won back the pawn, Kasparov sacrificed a second pawn. This enabled him to set up a fortress which the computer could not penetrate. By move 52, it was clear that the game was going to be a draw, but the computer played until move 61, more to demonstrate to the audience that the game was a hopeless draw.
It is going to be very hard for Kasparov to defeat this computer. The only game Kasparov has won thus far was the first game, and in that game Kasparov gained an overwhelming advantage in the opening. Since then, even when Kasparov has gained an advantage, he has not been able to convert to a full point.
Sam Sloan
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[Event "FIDE Man-Machine WC"] [Site "New York USA"] [Date "2003.02.02"] [Round "04"] [White "DEEP JUNIOR"] [Black "Kasparov, Garry"] [Result "1/2-1/2"] [ECO "B44"] [BlackElo "2847"] 1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 e6 5.Nb5 d6 6.c4 Nf6 7.N1c3 a6 8.Na3 Nd7 9.Nc2 Be7 10.Be2 b6 11.O-O Bb7 12.h3 O-O 13.Be3 Rc8 14.Qd2 Nce5 15.b3 Nf6 16.f3 Qc7 17.Rac1 Rfe8 18.a3 Ned7 19.Rfd1 Qb8 20.Bf2 Rcd8 21.b4 Ba8 22.a4 Rc8 23.Rb1 Qc7 24.a5 bxa5 25.b5 Bb7 26.b6 Qb8 27.Ne3 Nc5 28.Qa2 Nfd7 29.Na4 Ne5 30.Nc2 Ncd7 31.Nd4 Red8 32.Kh1 Nc6 33.Nxc6 Rxc6 34.Kg1 h6 35.Qa3 Rdc8 36.Bg3 Bf8 37.Qc3 Ne5 38.c5 Nd7 39.Qxa5 Nxc5 40.Nxc5 Rxc5 41.Qa4 R5c6 42.Bf2 d5 43.Bxa6 Bc5 44.Bxc5 Rxc5 45.Bxb7 Qxb7 46.exd5 exd5 47.Qa7 R5c7 48.Qxb7 Rxb7 49.Rxd5 Rc6 50.Rdb5 h5 51.Kf2 Re6 52.f4 g6 53.Kg3 Kg7 54.Kh4 Kh6 55.R1b4 Rd6 56.g3 f6 57.g4 hxg4 58.hxg4 Kg7 59.Rb3 Rc6 60.g5 f5 61.Rb1 1/2-1/2