Author: Kurt Utzinger
Date: 10:03:39 07/30/04
Go up one level in this thread
On July 30, 2004 at 10:55:07, Albert Silver wrote:
>The following position arose in a famous game between Taimanov and Karpov in
>1973. Karpov sacrificed a pawn to prevent white from pushing c4, and obtain
>excellent play against the hanging pawns using the two files. I expect that most
>of the top engines should find this move, but the amateurs should find it much
>harder. How does your engine do?
>
> Albert
>
>[D]2q2rk1/p1rn1ppp/1p2pn2/8/Q2P4/2P2N2/P2B1PPP/2RR2K1 b - - 0 17
>
>17...Rc4! 18.Qxa7 Qc6 19.Qa3 Rc8
>
>Here is the full game:
>
>[Event "Moscow-3teams"]
>[Site ""]
>[Date "1973"]
>[Round "2"]
>[White "Taimanov Mark E"]
>[Black "Karpov Anatoly"]
>[Result "0-1"]
>[Eco "E55"]
>[Annotator ""]
>[Source "MCL"]
>
>1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 c5 5.Bd3 O-O 6.Nf3 d5 7.O-O dxc4
>8.Bxc4 cxd4 9.exd4 b6 10.Qe2 Bb7 11.Rd1 Nbd7 12.Bd2 Rc8 13.Ba6
>Bxa6 14.Qxa6 Bxc3 15.bxc3 Rc7 16.Rac1 Qc8 17.Qa4 Rc4 18.Qxa7
>Qc6 19.Qa3 Rc8 20.h3 h6 21.Rb1 Ra4 22.Qb3 Nd5 23.Rdc1 Rc4 24.Rb2
>f6 25.Re1 Kf7 26.Qd1 Nf8 27.Rb3 Ng6 28.Qb1 Ra8 29.Re4 Rca4 30.Rb2
>Nf8 31.Qd3 Rc4 32.Re1 Ra3 33.Qb1 Ng6 34.Rc1 Nxc3 35.Qd3 Ne2+
>36.Qxe2 Rxc1+ 37.Bxc1 Qxc1+ 38.Kh2 Rxf3 39.gxf3 Nh4 0-1
>
>In the last position, white lost on time BTW.
I think you are overestimating today's chess programs. I
would indeed be surprised if there is a program to play
1...Nc4 within a time limit of 15-20 minutes. Below the
analysis of Wcrafty 19.15 and Shredder 8 UCI, both on P4 1.8:
Wcrafty 19.15:
White(1): setboard 2q2rk1/p1rn1ppp/1p2pn2/8/Q2P4/2P2N2/P2B1PPP/2RR2K1 b - - 0 17
+---+---+---+---+---+---+---+---+
8 | | . |<Q>| . | |<R>|<K>| . |
+---+---+---+---+---+---+---+---+
7 |<P>| |<R>|<N>| . |<P>|<P>|<P>|
+---+---+---+---+---+---+---+---+
6 | |<P>| | . |<P>|<N>| | . |
+---+---+---+---+---+---+---+---+
5 | . | | . | | . | | . | |
+---+---+---+---+---+---+---+---+
4 |-Q-| . | |-P-| | . | | . |
+---+---+---+---+---+---+---+---+
3 | . | |-P-| | . |-N-| . | |
+---+---+---+---+---+---+---+---+
2 |-P-| . | |-B-| |-P-|-P-|-P-|
+---+---+---+---+---+---+---+---+
1 | . | |-R-|-R-| . | |-K-| |
+---+---+---+---+---+---+---+---+
a b c d e f g h
Black(1): analyze
time surplus 0.00 time limit 22.50 (3:30)
depth time score variation (1)
7 0.71 -0.03 1. ... Rd8 2. Qc2 Nd5 3. a4 N7f6 4.
Ne5 Rd6
7-> 0.78 -0.03 1. ... Rd8 2. Qc2 Nd5 3. a4 N7f6 4.
Ne5 Rd6
8 0.84 -0.01 1. ... Rd8 2. Qc2 Nd5 3. c4 N7f6 4.
Qd3 Ne7 5. Re1
8 0.94 -0.10 1. ... Ne4 2. Qc2 Nxd2 3. Nxd2 Nf6
4. Re1 b5 5. Ne4 Ng4
8-> 1.15 -0.10 1. ... Ne4 2. Qc2 Nxd2 3. Nxd2 Nf6
4. Re1 b5 5. Ne4 Ng4
9 1.39 -0.04 1. ... Ne4 2. Qc2 Nxd2 3. Rxd2 Nf6
4. Re2 b5 5. Ng5 Rd8 6. f4
9-> 2.31 -0.04 1. ... Ne4 2. Qc2 Nxd2 3. Rxd2 Nf6
4. Re2 b5 5. Ng5 Rd8 6. f4
10 3.17 -0.18 1. ... Ne4 2. Qc2 Ndf6 3. Re1 Nxd2
4. Nxd2 Rd8 5. Qd3 Nd5 6. Ne4 b5
10-> 3.79 -0.18 1. ... Ne4 2. Qc2 Ndf6 3. Re1 Nxd2
4. Nxd2 Rd8 5. Qd3 Nd5 6. Ne4 b5
11 4.97 -0.12 1. ... Ne4 2. Qc2 Ndf6 3. Re1 Nxd2
4. Nxd2 Rd8 5. Qd3 Nd5 6. Nb1 Nb4 7.
Qe2
11-> 6.21 -0.12 1. ... Ne4 2. Qc2 Ndf6 3. Re1 Nxd2
4. Nxd2 Rd8 5. Qd3 Nd5 6. Nb1 Nb4 7.
Qe2
12 11.61 -0.14 1. ... Ne4 2. Qc2 Ndf6 3. Qd3 Rd8 4.
Re1 Nxd2 5. Nxd2 Nd5 6. Nb1 Nb4 7.
Qd2 Nd5 <HT>
12-> 17.35 -0.14 1. ... Ne4 2. Qc2 Ndf6 3. Qd3 Rd8 4.
Re1 Nxd2 5. Nxd2 Nd5 6. Nb1 Nb4 7.
Qd2 Nd5 <HT>
13 29.42 -0.12 1. ... Ne4 2. Qc2 Ndf6 3. c4 Nxd2 4.
Rxd2 Rd8 5. Re2 Rc6 6. Re5 Qc7 7. Qe2
Ng4 8. Rg5
13-> 38.70 -0.12 1. ... Ne4 2. Qc2 Ndf6 3. c4 Nxd2 4.
Rxd2 Rd8 5. Re2 Rc6 6. Re5 Qc7 7. Qe2
Ng4 8. Rg5
14 1:03 -0.14 1. ... Ne4 2. Qc2 Ndf6 3. c4 Nxd2 4.
Rxd2 Qd8 5. Qd1 Ne4 6. Re2 Ng5 7. Ne5
f6 8. Ng4 Qd6
14-> 1:26 -0.14 1. ... Ne4 2. Qc2 Ndf6 3. c4 Nxd2 4.
Rxd2 Qd8 5. Qd1 Ne4 6. Re2 Ng5 7. Ne5
f6 8. Ng4 Qd6
15 2:57 -0.10 1. ... Ne4 2. Qc2 Ndf6 3. c4 Nxd2 4.
Rxd2 Qd8 5. Re1 Qd6 6. Ne5 Nd7 7. Rd3
Rfc8 8. Rh3 h6 9. Nxd7 Rxd7
15-> 9:29 -0.10 1. ... Ne4 2. Qc2 Ndf6 3. c4 Nxd2 4.
Rxd2 Qd8 5. Re1 Qd6 6. Ne5 Nd7 7. Rd3
Rfc8 8. Rh3 h6 9. Nxd7 Rxd7
16 13:10 -0.12 1. ... Ne4 2. Qc2 Ndf6 3. c4 Nxd2 4.
Rxd2 Qd8 5. Ne5 Nd7 6. Qe4 Nxe5 7.
Qxe5 Qc8 8. c5 Rd8 9. Rdc2 Rd5 10.
Qe3
Black(0): end
**************************************************************************
Shredder 8 UCI: (P4 1.8/32 MB hash, Arena 1.08 GUI)
Shredder 8 UCI1:
1+ 00:00 3.77 Ne5 dxe5
1 00:00 4.34 Ne5 Nxe5
1 00:00 3.02 Nc5 dxc5
1- 00:00 0.24 Ne4
1 00:00 0.19 Ne4
2+ 00:00 0.47 Ne4 c4 Nxd2 Rxd2
2 00:00 0.49 Ne4 c4 Nxd2 Nxd2
3 00:00 0.49 Ne4 c4 Nxd2 Nxd2
4 00:00 0.46 Ne4 c4 Nxd2 Rxd2 Nf6
5 00:00 0.59 Ne4 c4 Nxd2 Rxd2 a6 Re2
6 00:00 0.49 Ne4 c4 Nd6 Bf4 Rxc4 Qxa7
7 00:00 0.39 Ne4 c4 Nd6 Re1 Nxc4 Bf4 Nd6
8 00:00 0.31 Ne4 c4 Nd6 Bf4 Rxc4 Qxa7 Rc2 Re1
9 00:00 0.55 Ne4 c4 Nxd2 Rxd2 Nf6 Qc2 Rxc4 Qxc4 Rd8 Qxc8
10 00:00 0.59 Ne4 c4 Nxd2 Rxd2 Nf6 Qc2 Qb7 Re2 Rfc8 Ne5 Rd8
11 00:01 0.48 Ne4 c4 Nxd2 Rxd2 Qb7 Qc2 Qc6 Re2 Rfc8 Qd3 e5 Nxe5 Nxe5 dxe5
12 00:02 0.40 Ne4 c4 Nxd2 Rxd2 Qb7 Qc2 Rfc8 Qd3 Qa6 Rdc2 Nf6 Ne5 Qb7
13 00:04 0.45 Ne4 c4 Nxd2 Rxd2 Qb7 Qc2 Rfc8 Qd3 Qa6 Rdc2 Nf6 Ne5 Nd7 Ng4
14 00:07 0.47 Ne4 c4 Nxd2 Rxd2 Qb7 Qc2 Rfc8 Qd3 Qa6 Rdc2 Qa4 Ng5 Nf6 f3 Qc6
15 00:13 0.40 Ne4 c4 Nxd2 Rxd2 Qb7 Qc2 Rfc8 Qd3 Qa6 Rdc2 Qa4 a3 Nf6 Ne5 Nd7
Ng4
16 00:24 0.40 Ne4 c4 Nxd2 Rxd2 Qb7 Qc2 Rfc8 Qd3 Qa6 Rdc2 Qa4 a3 Nf6 Ne5 Nd7
f4 Nxe5
17 00:56 0.38 Ne4 c4 Nxd2 Nxd2 e5 d5 Nc5 Qc2 Qg4 Nb3 Nd7 f3 Qf4 Qe4 Qxe4
fxe4
18 01:49 0.35 Ne4 c4 Nxd2 Nxd2 Qd8 Nf3 Qf6 Re1 Rfc8 Qb5 Qf4 a4 Rxc4 Rxc4
Rxc4 Qxc4 Qxh2+ Kxh2
19 03:49 0.26 Ne4 c4 Nxd2 Nxd2 Qd8 Qa3 Qh4 Nf3 Qf6 Re1 Qf4 Qd3 Rfc8 Rxe6
Qxc1+ Re1 Rxc4 Qxh7+
20 06:48 0.31 Ne4 c4 Nxd2 Nxd2 Qd8 Qa3 Qh4 Qe3 Rfc8 Re1 Qg4 f3 Qh4 Qe4 Qxe4
fxe4 f6 Kf2 Kf7
Kurt [http://www.utzingerk.com]
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