Author: Richard Pijl
Date: 08:47:24 04/14/04
Go up one level in this thread
On April 13, 2004 at 18:15:36, Stephen Ham wrote:
>Hi Terry,
>
>I guess you can drop the phony name now, since we know it's you.
>
>Anyway, this was indeed a great game and I'm glad that you brought it up.
>Thanks. For me, the key move was 13 a3(!). While such a move has subsequently
>been played by others who've learned from Fischer, spending a tempo to slow
>Black's advances on the Queenside is an original positional motif that's
>probably far beyond any engine's horizon. I think Fischer was the first to play
>a3 in this common position.
>
>While the move isn't a decisive winner in a concrete sense, it gives White a
>large positional advantge. So it might be fun to see is some of the more
>"knowledge" laden engines can find 13 a3. My guess is that the move is both too
>strategic and too human (i.e. long-range planing) for any engine to find.
Guess again :-)
I'm not sure it is really understood, or selected by accident ...
The Baron 1.3.0 b2 (I don't have access to the later versions from this
computer) on a Xeon 2.8Ghz:
ply time nodes score pv
5(10)& 0:00.11 25578 -0.49 Nf3-g5 a4-a3 b2xa3 h7-h6 Ng5-f3
5(10)& 0:00.20 45988 -0.42 h4-h5 a4-a3 b2xa3 Ra8xa3 h5-h6 g7-g6
5(10). 0:00.20 46029 -0.42 h4-h5 a4-a3 b2xa3 Ra8xa3 h5-h6 g7-g6
6(10)& 0:00.31 79111 -0.54 h4-h5 Bc8-b7 h5-h6 g7-g5 Bf4-d2 g5-g4
6(11). 0:01.11 261050 -0.54 h4-h5 Bc8-b7 h5-h6 g7-g5 Bf4-d2 g5-g4
7(11)& 0:01.52 368398 -0.47 h4-h5 Rf8-e8 Qd1-e2 a4-a3 b2xa3 Ra8xa3
h5-h6 Be7-f8
7(13). 0:02.09 511404 -0.47 h4-h5 Rf8-e8 Qd1-e2 a4-a3 b2xa3 Ra8xa3
h5-h6 Be7-f8
8(12)& 0:02.97 753569 -0.47 h4-h5 Rf8-e8 h5-h6 g7-g5 Bf4-d2 g5-g4
Nf3-h2 Nd7xe5
8(14). 0:04.83 1222355 -0.47 h4-h5 Rf8-e8 h5-h6 g7-g5 Bf4-d2 g5-g4
Nf3-h2 Nd7xe5
9(14)& 0:08.08 2079185 -0.52 h4-h5 a4-a3 b2-b3 f7-f6 e5xf6 Be7xf6
Bg2-h3 Nd7-b6 Nf3-e5 Nc6-d4
9(15). 0:18.55 4727745 -0.52 h4-h5 a4-a3 b2-b3 f7-f6 e5xf6 Be7xf6
Bg2-h3 Nd7-b6 Nf3-e5 Nc6-d4
10(16)& 0:28.92 7452671 -0.47 h4-h5 a4-a3 b2xa3 Ra8xa3 h5-h6 g7-g6
Nf1-h2 Qd8-a5 Qd1-b1 Bc8-b7 Qb1-b2
10(18). 0:44.44 11379071 -0.47 h4-h5 a4-a3 b2xa3 Ra8xa3 h5-h6 g7-g6
Nf1-h2 Qd8-a5 Qd1-b1 Bc8-b7 Qb1-b2
11(17)& 1:01.09 15672994 -0.51 h4-h5 a4-a3 b2-b3 h7-h6 Ra1-c1 Bc8-b7
g3-g4 Qd8-a5 Nf1-g3 Nd7-b6 Qd1-e2
11(19). 2:03.98 31508557 -0.51 h4-h5 a4-a3 b2-b3 h7-h6 Ra1-c1 Bc8-b7
g3-g4 Qd8-a5 Nf1-g3 Nd7-b6 Qd1-e2
12(17)& 2:40.66 40609757 -0.56 h4-h5 a4-a3 b2xa3 Ra8xa3 h5-h6 g7-g6
Nf1-d2 Bc8-b7 Nd2-b1 Ra3-a5 a2-a4 g6-g5
Bf4-d2
12(21)& 7:35.91 114632139 -0.47 a2-a3 Bc8-b7 a3xb4 c5xb4 h4-h5 Rf8-e8
d3-d4 a4-a3 Qd1-b1 Qd8-b6 Re1-d1 Bb7-a6
Nf1-h2
12(21). 8:10.95 123496127 -0.47 a2-a3 Bc8-b7 a3xb4 c5xb4 h4-h5 Rf8-e8
d3-d4 a4-a3 Qd1-b1 Qd8-b6 Re1-d1 Bb7-a6
Nf1-h2
13(20)& 16:06.50 242047740 -0.45 a2-a3 b4xa3 Ra1xa3 c5-c4 Bf4-g5 f7-f6
e5xf6 Nd7xf6 Ra3-a2 c4xd3 c2xd3 Be7-b4
Bg5-d2 Bb4xd2 Nf1xd2
13(23). 21:17.34 317533261 -0.45 a2-a3 b4xa3 Ra1xa3 c5-c4 Bf4-g5 f7-f6
e5xf6 Nd7xf6 Ra3-a2 c4xd3 c2xd3 Be7-b4
Bg5-d2 Bb4xd2 Nf1xd2
Richard.
>
>Stephen
>
>>Fischer played the famous 29. Bg2 annotated with two exclamation marks, but
>>further inspection shows 29. Bg4!! forces mate! After 29. Bg2!? Black failed to
>>play 29...Qf8 and was quickly mated, albeit Black was lost, he could have
>>prolonged the game.
>>
>>
>>[D]2r1q1k1/r4p1p/b3pBp1/n3P1QP/p2p3R/P2p2PB/2P2P2/R5K1 w - - 0 29
>>
>>
>>1.e4 e6 2.d3 d5 3.Nd2 Nf6 4.g3 c5 5.Bg2 Nc6 6.Ngf3 Be7 7.0–0 0–0 8.e5 Nd7 9.Re1
>>b5 10.Nf1 b4 11.h4 a5 12.Bf4 a4 13.a3 bxa3 14.bxa3 Na5 15.Ne3 Ba6 16.Bh3 d4
>>17.Nf1 Nb6 18.Ng5 Nd5 19.Bd2 Bxg5 20.Bxg5 Qd7 21.Qh5 Rfc8 22.Nd2 Nc3 23.Bf6 Qe8
>>24.Ne4 g6 25.Qg5 Nxe4 26.Rxe4 c4 27.h5 cxd3 28.Rh4 Ra7 (The game continued
>>29.Bg2!? dxc2?? 30.Qh6 Qf8 31.Qxh7+!! 1-0
>>
>>Test your engines, how many programs find 29. Bg4!!...? 29. Bg4!! is vital as it
>>targets the e6 pawn, Fischer failed to see this. 29. Bg2!? was played in order
>>to deliver mate with the B going to e4.
>>
>>
>>Lloyd
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