Author: K. Burcham
Date: 22:29:07 09/28/05
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Thanks for your reply Robert. Always like reading your comments about Deep Blue. Of course we both know that the h5 move in game five has been discussed many times. Here is Fruit 2.1. John if you read this, what does chessmaster do with default settings in this position? Fruit 2.1 432 hash Athlon 64 764 pin 2200 mhz h5 in five seconds. [D] r2qk2r/pp3ppp/2p1pn2/4n3/1b6/3P2PP/PPPN1PB1/R1BQK2R b KQkq - 4 1 00:00:00.0 0.71 5 14645 O-O f4 Ng6 O-O Nd5 00:00:00.1 0.60 6 59452 O-O a3 Bc5 Nb3 Qb6 O-O 00:00:00.2 0.27 7 200589 O-O O-O Qb6 Nf3 Bd6 Re1 Ng6 00:00:00.4 0.24 8 407698 O-O O-O Qb6 Re1 Bd6 Ne4 Nxe4 Bxe4 f5 00:00:01.1 0.18 9 1011530 O-O O-O Nd5 Re1 Qc7 d4 Ng6 c4 Nf6 00:00:02.5 0.04 10 2475965 O-O O-O Nd5 Re1 Qc7 Qe2 Ng6 c3 Bc5 Nc4 00:00:04.2 0.11 10 4088578 h5 a3 Bd6 Ne4 Nxe4 Bxe4 f5 Bg2 Bc5 Bd2 Kf7 00:00:07.8 0.11 11 7518463 h5 Qe2 Bd6 f4 Ng6 Nc4 h4 f5 Bxg3+ Kd1 Nf8 Bd2 00:00:19.3 0.00 12 18830729 h5 O-O h4 d4 Qxd4 c3 Qb6 cxb4 hxg3 Qb3 gxf2+ Rxf2 Qd4 b5 00:00:41.3 -0.05 13 40615296 h5 O-O h4 d4 Qxd4 c3 Qb6 cxb4 hxg3 Qe2 Ned7 Nc4 gxf2+ Rxf2 Qxb4 00:02:17.0 0.00 14 133102696 h5 Qe2 Qc7 O-O h4 Ne4 Be7 Be3 Nd5 d4 Nxe3 fxe3 Nd7 Qf2 O-O gxh4 00:05:17.0 0.08 15 307648549 h5 Qe2 Qc7 c3 Be7 Ne4 h4 Nxf6+ Bxf6 g4 Ng6 Be4 Nf4 Bxf4 Qxf4 d4 O-O O-O 00:10:54.5 0.07 16 633368278 h5 Qe2 Qc7 c3 Be7 Ne4 h4 Nxf6+ Bxf6 g4 O-O-O d4 Ng6 Be4 Nf4 Bxf4 Qxf4 Qe3 Bg5 00:16:44.6 -0.02 17 977058195 h5 Qe2 Qc7 c3 Be7 h4 O-O-O d4 Neg4 Nc4 Nd5 O-O Bf6 f3 Nh6 Bxh6 Rxh6 f4 00:42:35.1 -0.02 18 -1805878841 h5 Qe2 Qc7 c3 Be7 h4 O-O-O d4 Neg4 Nc4 Nd5 O-O Bf6 a4 Kb8 Re1 Be7 Be4 01:17:57.7 -0.06 19 267945229 h5 Qe2 Qc7 c3 Be7 h4 O-O-O d4 Neg4 Nc4 Nd5 O-O Bf6 Re1 g6 Bf3 Kb8 Bd2 c5 Bxg4 hxg4 dxc5 Qxc5 Qxg4 Rematch Place: New York, NY USA Round: 5 Date: 10/5/1997 White: Kasparov, Garry Black: Deep Blue Kasparov's comments about 11...h5 Kasparov said no computer can play 11...h5 without human interference. Kasparov said there is no reason for a computer program to score h5 in this position as Deep Blue did, and then choose this as its best move. "I do not understand". "There is no threat with 11...h5". "Computers cannot make a purely positional move". I demand to see the logs to determine for myself, if Deep Blue played this move or if there was human interference". GM Nunn analysis on 11...h5. A surprising move from a computer, but a good one. The computer puts its finger on the slight weakness created by the move h3. This means that after a later ...h4, White will be forced to either defend the g3-pawn or play g4, but then the square f4 is accessible to Black's pieces, especially the knight on g6. Some human players who like pushing their rook's pawns (Speelman, for example) might also have played this move, but it is certainly interesting that Deep Blue finds this quite sophisticated positional idea. Here is an original article from 1997, (reference to 11...h5) When Frederic Friedel was asked if Game 5 was a tough one for him, he had one word to say. "Pow." This was the game Kasparov had to win, and this was the game his team felt they could win. Instead, Friedel left the auditorium visibly shaken. "I am drained," he said. As Kasparov's technical assistant, Friedel has been unusually forthcoming with the press during the match. After Game 5, however, he refused to comment on the dispute that took place immediately after the game. The discussion apparently had to do with the handling of Deep Blue's log books. "I cannot say anything about it," Friedel said. "Garry called me in as his computer assistant on a very serious internal matter, and it was settled." There is some speculation that the matter is related to the computer's play in Game 2, which still has the Kasparov team mystified. "Yes, he is still thinking about it," said Friedel. "Garry doesn't have experience in being beaten and in that game he was beaten very badly." What puzzles the Kasparov team about Game 2, as well as Saturday's Game 5, is that the computer made moves which seemed human to them. "I'm his computer expert, and I'm supposed to explain to him how it plays, but I can't," Friedel said. "Even my computer doesn't understand it." He said the team would go back tonight and use its computer to analyze Deep Blue's moves. "We will look at its h5 move -- Deep Blue's most surprising move, early in the game -- and after Fritz (a computer program) analyzes it for ten hours, we hope we will have an answer." Another of Kasparov's assistants, Michael Khodarkovsky, said Deep Blue succeeded on the strength of what he called "pure calculation and brute force computation." Friedel agreed, pointing out that while Kasparov appeared to be outplaying Deep Blue, the computer is at its strongest in the endgame, which it plays perfectly. That puts enormous pressure on the champion. Added Khardakovsky "We have to see everything perfectly, and that's very hard." The sentiment was echoed by the champion himself, speaking from the auditorium stage after the game. "I can out-calculate any player in the world," he said, "but I cannot out-calculate the machine." While Kasparov had just come off two days rest, Friedel was again worried about the effects of mental fatigue on the champion. "The computer is forcing him to calculate every move, and he is going to be exhausted," he said, adding that the team, Kasparov included, "will return to the hotel and immediately set to work analyzing the game." Kasparov will also play the black pieces tomorrow, which will make a win even more difficult. "It's the last game of the match, so he has to secure a draw, and he has to win out of a draw position, which is not going to be easy." Kasparov admitted as much, when he said, harking back to Game 2, "I am not afraid to admit I am afraid, so I have to be cautious." Friedel was asked what it would mean if the computer wins on Sunday, or if the match would end in a draw. Does that mean the computer is a superior player? "No," Friedel said emphatically. "Garry has not seen any of the computer's previous games, and they play a match of six games. That isn't enough. If after this they were to play 20 games, I think you would see Garry win easily." But either way, the Kasparov team will leave New York thinking much differently about their opponent than the way they did before the match began. "This has been a shattering experience," said Friedel. "We just didn't expect this to happen. I hope after the match we will all sit down and see how it has been able to perform this way." Original Commentary about 11...h5 made during game 5. (also note explaination of depth in Deep Blue logs). YASSER SEIRAWAN: Has 38 points of a pawn advantage. Pawn equals a hundred points. So it thinks 38 points. We do have a question in the aweience. DB MOVE: 11...h5. MAURICE ASHLEY: No! YASSER SEIRAWAN: h7-h5! Well, yeah. h7-h5? We've got to take a look at Garry now! YASSER SEIRAWAN: Garry is a happy camper! Who's been programming this machine? MAURICE ASHLEY: I mean we've seen some strange moves and we've seen some strange moves. That's a strange move! MIKE VALVO: I think I better go upstairs and see what's going on here. MAURICE ASHLEY: Okay, well, we will give Mike his well-timed break and he will go to the press room and get a few /TPR-FT 49th floor, the Grandmasters, there are many, many Grandmasters all over the world on that floor, and Mike, a little reconnaissance mission for us. YASSER SEIRAWAN: Absolutely, from the computer scientist. IM Michael /SRO*EF. MAURICE ASHLEY: All of us are shocked with the move h7-h5. Let me just catch my breath and get a question and then we'll get back to the action. YASSER SEIRAWAN: Yes, sir? AUDIENCE MEMBER: Just a comment. You were talking about the comment 10/10. The second number is the maximum ply including extensions. So, in other words, it might search to 10 ply and then it sees a forcing check line where it can check the opponent, say eight more ply, that would go to 18. In this case the deepest it's going is 32 ply. It's a special -- in some special situations. YASSER SEIRAWAN: So just to be clear that I understand you, the 10 -- the first number refers to all the possibilities up to ten plies. Fritz is analyzing all possible moves five moves ahead. But the 32 means that in one of its extensions is looking 16 moves deep? AUDIENCE MEMBER: Yes. MAURICE ASHLEY: Thank you very much for that /SHRAPBGS. We do have a slight error on our screen to the left. It says move 10 was Bd4, when in fact it's Bb4+ Nd2 and h5.
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