Kasparov Bedevils Deep Blue With First Win

PHILADELPHIA —  World chess champion Garry Kasparov outmaneuvered the computer Deep Blue on Sunday, rebounding from an opening-round loss and evening the six-game series at one win apiece.

Kasparov won the match in 73 moves with a triumphant display of long-range tactical thinking over the IBM computer, which has a calculating capacity of 200 million moves a second.

“Kasparov managed to develop a plan that extended beyond the computer’s horizon,” said observer David Levy, vice president of the International Computer Chess Assn. “Arguably, the computer didn’t know what was going on.”

Feng-hsiung Hsu, the architect and principal designer of Deep Blue, ceded defeat after 5 hours, 45 minutes.

Kasparov, 32, had suffered a startling loss in Saturday’s opening game when the computer took advantage of the Russian’s wide-open, aggressive attack.

In that first round, Kasparov ceded defeat on the 37th move when Deep Blue pinned his king between a knight and a rook.

“I know my opponent is invisible, but I strongly believe that it’s not invincible,” Kasparov said before the match. After the loss, Kasparov left Philadelphia’s convention center without a word.

Kasparov was under pressure as early as the 13th move, when he took 27 minutes to reply to Deep Blue’s knight attacking his queen.

By the 29th move, Grandmaster Yasser Seirawan and International Master Maurice Ashley were saying that Kasparov lost.

Play resumes Tuesday in the series coinciding with the University of Pennsylvania’s celebration of the 50th birthday of the groundbreaking computer ENIAC.

The duel is the first to pit human against machine for a regulation, six-game chess match.

Kasparov, at age 22, became the youngest world chess champion when he defeated fellow Russian Anatoly Karpov 10 years ago.

In 1989, he proved experts wrong by handily defeating Deep Thought, IBM’s prototype for Deep Blue.

Here are Sunday’s moves:

Kasparov-Deep Blue No. 2: 1 Nf3 d5 2 d4 e6 3 g3 c5 4 Bg2 Nc6 5 0-0 Nf6 6 c4 dxc4 7 Ne5 Bd7 8 Na3 cxd4 9 Naxc4Bc5 10 Qb3 0-0 11 Qxb7 Nxe5 12 Nxe5 Rb8 13 Qf3 Bd6 14 Nc6 Bxc6 15 Qxc6 e5 16 Rb1 Rb6 17 Qa4 Qb8 18 Bg5 Be7 19 b4 Bxb4 20 Bxf6 gxf6 21 Qd7 Qc8 22 Qxa7 Rb8 23 Qa4 Bc3 24 Rxb8 Qxb8 25 Be4 Qc7 26 Qa6 Kg7 27 Qd3 Rb8 28 Bxh7 Rb2 29 Be4 Rxa2 30 h4 Qc8 31 Qf3 Ra1 32 Rxa1 Bxa1 33 Qh5 Qh8 34 Qg4+ Kf8 35 Qc8+ Kg7 36 Qg4+ Kf8 37 Bd5 Ke7 38 Bc6 Kf8 39 Bd5 Ke7 40 Qf3 Bc3 41 Bc4 Qc8 42 Qd5 Qe6 43 Qb5 Qd7 44 Qc5+ Qd6 45 Qa7+ Qd7 46 Qa8 Qc7 47 Qa3+ Qd6 48 Qa2 f5 49 Bxf7 e4 50 Bh5 Qf6 51 Qa3+ Kd7 52 Qa7+ Kd8 53 Qb8+ Kd7 54 Be8+ Ke7 55 Bb5 Bd2 56 Qc7+ Kf8 57 Bc4 Bc3 58 Kg2 Be1 59 Kf1 Bc3 60 f4 exf3 61 exf3 Bd2 62 f4 Ke8 63 Qc8+ Ke7 64 Qc5+ Kd8 65 Bd3 Be3 66 Qxf5 Qc6 67 Qf8+ Kc7 68 Qe7+ Kc8 69 Bf5+ Kb8 70 Qd8+ Kb7 71 Qd7+ Qxd7 72 Bxd7 Kc7 73 Bb5 Resigns