The Special K

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Jack Lad
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The Special K

Post by Jack Lad » Fri Apr 06, 2012 6:23 pm

Karpov should have played Nd3! here - does your engine agree?
[d] r2q1b1k/1b4p1/p2pr2p/3n4/Pnp1N1N1/6RP/1B3PP1/1B1QR1K1 b - - 3 25
http://www.chessgames.com/perl/chessgame?gid=1067294

After 25...Qe8? 26. Nxh6! black is lost.
[d] r3qb1k/1b4p1/p2pr2N/3n4/Pnp1N3/6RP/1B3PP1/1B1QR1K1 b - - 0 26
A great game by Kasparov! 8-)

zullil
Posts: 4878
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Re: The Special K

Post by zullil » Fri Apr 06, 2012 6:44 pm

Jack Lad wrote:Karpov should have played Nd3! here - does your engine agree?
[d] r2q1b1k/1b4p1/p2pr2p/3n4/Pnp1N1N1/6RP/1B3PP1/1B1QR1K1 b - - 3 25
http://www.chessgames.com/perl/chessgame?gid=1067294
Critter-1.4 switches to Nd3 quickly:

Code: Select all

15/61  00:06  51162994 7452730  +0.08 Qd7 Qd4 Nd3 Bxd3 cxd3 Rxd3 Nb6 Qxb6 Bxe4 Rb3 Rae8 f3 Bf5 Ne3 d5 Qd4 Bc2 Nxc2 Rxe1+ Nxe1 Rxe1+ Kf2
16/61  00:09  78185676 7983017  +0.12 Nd3 Bxd3 cxd3 Qd2 Qh4 Rxd3 h5 Rxd5 hxg4 Re3 Qh7 Ng5 Qb1+ Qd1 Qxd1+ Rxd1 Rxe3 fxe3 gxh3 Nxh3 Kg8 Nf4 Rc8 Rd2 Be7 Ba3 g5 Nd5
17/61  00:10  88547812 8071815  +0.07 Nd3 Bxd3 cxd3 Qd2 Qh4 Rxd3 h5 Rxd5 hxg4 Re3 Qh7 Ng5 Qb1+ Qd1 Qxd1+ Rxd1 Rxe3 fxe3 gxh3 Nxh3 Kg8 Nf4 Re8 Ng6 Rxe3 Nxf8 Kxf8 Rxd6 Rg3 Rd2 Ke7
18/61  00:15 135302448 8485040  +0.11 Nd3 Bxd3 cxd3 Qd2 Qh4 Rxd3 h5 Rxd5 hxg4 Re3 Qh7 Ng5 Qb1+ Qd1 Qxd1+ Rxd1 Rxe3 fxe3 gxh3 Nxh3 Kg8 Nf4 Re8 Ng6 Rxe3 Nxf8 Kxf8 Rxd6 Rg3 Rd2 Ke7 Be5
19/61  00:23 209902934 8857785  +0.10 Nd3 Bxd3 cxd3 Qd2 Qh4 Rxd3 h5 Rxd5 hxg4 Re3 Qh7 Ng5 Qb1+ Qd1 Qxd1+ Rxd1 Rxe3 fxe3 gxh3 gxh3 Kg8 Ne6 Be7 Nxg7 Rf8 Rf1 Bc8 Rxf8+ Bxf8 Nh5 Bxh3 Nf4 Bg4
20/61  00:43 403352789 9305635  +0.05 Nd3 Bxd3 cxd3 Qd2 Qh4 Rxd3 h5 Rxd5 hxg4 Re3 Qh7 hxg4 Rh6 Ng3 Bxd5 Qxd5 Qb1+ Nf1 Rb8 g5 Rh4 Bc3 Qc2 Ng3 Qxa4 Nf5 Qc4 Qd1 Rh7 g6
21/61  01:30 864127654 9545945  +0.00 Nd3 Bxd3 cxd3 Qd2 Qh4 Rxd3 h5 Rxd5 hxg4 Rxd6 Bxd6 Nxd6 gxh3 Bxg7+ Kg8 Qa2 h2+ Kh1 Bxg2+ Kxg2 Qg4+ Kxh2 Kxg7 Qb2+ Kh6 Qd2+ Kh7 Qd3+ Kg7 Nf5+ Kf6 Rxe6+ Kxe6 Qd6+ Kxf5 Qd5+ Kf6 Qxa8 Qh4+ Kg1 Qg4+ Kh2

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Ajedrecista
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Re: The Special K.

Post by Ajedrecista » Fri Apr 06, 2012 7:19 pm

Hello:

Komodo 3 w32 doubts between Nd3 and Qe8. The latter move leads to the first position of the Nolot test.

Intel Pentium D930 (3 GHz) with 256 MB of hash running under Arena 2.0.1 GUI:

[d]r2q1b1k/1b4p1/p2pr2p/3n4/Pnp1N1N1/6RP/1B3PP1/1B1QR1K1 b - - 3 25
FEN: r2q1b1k/1b4p1/p2pr2p/3n4/Pnp1N1N1/6RP/1B3PP1/1B1QR1K1 b - - 3 25

Komodo3-32:

1 00:00 378 24.192 +0,93 Nd5f4 Qd1d2

2 00:00 921 29.472 +0,74 Nd5f4 Qd1c1 Nb4d3 Bb1xd3

3 00:00 1.432 30.549 +0,74 Nd5f4 Qd1c1 Nb4d3 Bb1xd3 Nf4xd3

4 00:00 2.073 44.224 +0,74 Nd5f4 Qd1c1 Nb4d3 Bb1xd3 Nf4xd3 Qc1xc4 Re6xe4

5 00:00 2.659 56.725 +0,74 Nd5f4 Qd1c1 Nb4d3 Bb1xd3 Nf4xd3 Qc1xc4 Re6xe4
5 00:00 3.530 75.306 +0,74 Nd5f4 Qd1c1 Nb4d3 Bb1xd3 Nf4xd3 Qc1xc4 Re6xe4

6 00:00 4.373 69.968 +0,74 Nd5f4 Qd1c1 Nb4d3 Bb1xd3 Nf4xd3 Qc1xc4 Re6xe4 Re1xe4 Nd3xb2
6 00:00 7.656 97.996 +0,74 Nd5f4 Qd1c1 Nb4d3 Bb1xd3 Nf4xd3 Qc1xc4 Re6xe4 Re1xe4 Nd3xb2

7 00:00 11.170 102.125 +0,58 Nd5f4 Ng4xh6
7 00:00 19.167 122.668 +0,11 Nd5f4 Ng4xh6
7 00:00 27.908 137.393 +0,40 Qd8b6 Rg3f3 Bf8e7 Rf3f7 Ra8g8 Bb2d4 Qb6c7 Ng4e3
7 00:00 41.347 139.274 +0,40 Qd8b6 Rg3f3 Bf8e7 Rf3f7 Ra8g8 Bb2d4 Qb6c7 Ng4e3

8 00:00 49.385 143.665 +0,23 Qd8b6 Qd1c1
8 00:00 55.128 147.008 +0,57 Nd5f4
8 00:00 56.782 145.361 +0,56 Nd5f4 Ng4xh6
8 00:00 72.929 141.438 +0,32 Nd5f4 Ng4xh6 Re6xh6 Qd1g4 Nf4e6 Ne4d2 Bb7d5 Rg3e3
8 00:01 95.187 145.046 +0,39 Qd8d7 Rg3f3 Qd7c7 Bb2d4 a6a5 Qd1e2 Ra8c8 Ng4e3 Bf8e7 Ne3xd5
8 00:01 109.324 142.790 +0,39 Qd8d7 Rg3f3 Qd7c7 Bb2d4 a6a5 Qd1e2 Ra8c8 Ng4e3 Bf8e7 Ne3xd5

9 00:01 152.390 147.772 +0,22 Qd8d7 Qd1d2
9 00:01 168.489 151.877 +0,56 Nd5f4
9 00:01 186.119 154.696 +0,87 Nd5f4 Ng4xh6 Re6xh6 Qd1g4 Nf4h5 Ne4g5 Bb7d5 Rg3e3 Nh5f6 Qg4d4 Kh8g8
9 00:01 192.414 152.030 +0,87 Nd5f4 Ng4xh6 Re6xh6 Qd1g4 Nf4h5 Ne4g5 Bb7d5 Rg3e3 Nh5f6 Qg4d4 Kh8g8

10 00:02 271.022 159.132 +1,01 Nd5f4 Ng4xh6 Re6xh6 Qd1g4 Nf4h5 Ne4g5 Bb7d5 Rg3e3 Nh5f6 Qg4d4 Rh6h5
10 00:02 278.892 156.570 +1,01 Nd5f4 Ng4xh6 Re6xh6 Qd1g4 Nf4h5 Ne4g5 Bb7d5 Rg3e3 Nh5f6 Qg4d4 Rh6h5

11 00:02 391.260 163.664 +0,86 Nd5f4 Ng4xh6 Re6xh6 Qd1g4 Nf4h5 Ne4g5 Bb7d5 Rg3e3 Nh5f6 Qg4f4 Kh8g8 Bb1f5 Ra8b8
11 00:03 433.507 162.248 +0,86 Nd5f4 Ng4xh6 Re6xh6 Qd1g4 Nf4h5 Ne4g5 Bb7d5 Rg3e3 Nh5f6 Qg4f4 Kh8g8 Bb1f5 Ra8b8

12 00:03 463.949 164.048 +0,70 Nd5f4 Ng4xh6
12 00:05 825.192 172.589 +0,71 Nd5f4
12 00:05 940.447 175.990 +0,79 Nd5f4 Ng4xh6 Re6xh6 Qd1g4 Nf4h5 Ne4g5 Bb7d5 Bb1e4 Qd8a5 Rg3e3 Nh5f6 Qg4f5 Ra8b8 Be4xd5 Qa5xd5
12 00:05 940.499 175.486 +0,79 Nd5f4 Ng4xh6 Re6xh6 Qd1g4 Nf4h5 Ne4g5 Bb7d5 Bb1e4 Qd8a5 Rg3e3 Nh5f6 Qg4f5 Ra8b8 Be4xd5 Qa5xd5

13 00:07 1.348.925 180.987 +0,73 Nd5f4 Ng4xh6 Re6xh6 Qd1g4 Nf4h5 Ne4g5 Bb7d5 Bb1e4 Qd8c7 Be4xd5 Nb4xd5 Rg3f3 Nd5f6 Bb2xf6 g7xf6 Qg4e4 Ra8b8 Ng5e6 Qc7a5
13 00:08 1.499.944 180.105 +0,73 Nd5f4 Ng4xh6 Re6xh6 Qd1g4 Nf4h5 Ne4g5 Bb7d5 Bb1e4 Qd8c7 Be4xd5 Nb4xd5 Rg3f3 Nd5f6 Bb2xf6 g7xf6 Qg4e4 Ra8b8 Ng5e6 Qc7a5

14 00:09 1.692.393 181.733 +0,57 Nd5f4 Ng4xh6
14 00:18 3.345.773 185.715 +0,10 Nd5f4 Ne4f6
14 00:46 8.462.746 185.231 +0,36 Qd8e8 Ng4xh6 c4c3 Kg1h2 Re6xh6 Ne4xc3 Qe8f7 Nc3xd5 Nb4xd5 Qd1b3 Ra8b8 Bb1e4 Qf7c7 Re1c1 Qc7b6 Bb2xg7+ Bf8xg7 Be4xd5 Qb6xb3 Rg3xb3 Bg7e5+ Kh2g1
14 00:47 8.769.295 184.738 +0,36 Qd8e8 Ng4xh6 c4c3 Kg1h2 Re6xh6 Ne4xc3 Qe8f7 Nc3xd5 Nb4xd5 Qd1b3 Ra8b8 Bb1e4 Qf7c7 Re1c1 Qc7b6 Bb2xg7+ Bf8xg7 Be4xd5 Qb6xb3 Rg3xb3 Bg7e5+ Kh2g1

15 00:51 9.544.778 185.617 +0,34 Qd8e8 Ng4xh6 c4c3 Kg1h2 Re6xh6 Ne4xc3 Qe8f7 Nc3xd5 Nb4xd5 Qd1b3 Ra8b8 Bb2d4 Qf7c7 Bd4a7 Rb8a8 Ba7d4 Nd5f4 Bb1f5 Bb7d5 Qb3e3
15 00:56 10.478.522 185.871 +0,34 Qd8e8 Ng4xh6 c4c3 Kg1h2 Re6xh6 Ne4xc3 Qe8f7 Nc3xd5 Nb4xd5 Qd1b3 Ra8b8 Bb2d4 Qf7c7 Bd4a7 Rb8a8 Ba7d4 Nd5f4 Bb1f5 Bb7d5 Qb3e3

16 01:05 12.164.391 186.740 +0,15 Qd8e8 Ng4xh6
16 01:33 16.880.066 182.025 +0,16 Qd8e8
16 01:39 17.886.535 180.986 +0,14 Qd8e8 Ng4xh6 c4c3 Re1e2 Re6xh6 Ne4xc3 Qe8h5 Qd1d2 Nd5f6 Nc3e4 Nb4d5 Bb1d3 Nf6xe4 Re2xe4 Nd5f6 Re4e1 Bb7c6 Bb2c3 Ra8e8 Re1xe8 Qh5xe8 Rg3e3
16 02:13 22.672.728 170.411 +0,14 Qd8e8 Ng4xh6 c4c3 Re1e2 Re6xh6 Ne4xc3 Qe8h5 Qd1d2 Nd5f6 Nc3e4 Nb4d5 Bb1d3 Nf6xe4 Re2xe4 Nd5f6 Re4e1 Bb7c6 Bb2c3 Ra8e8 Re1xe8 Qh5xe8 Rg3e3

17 03:01 28.128.234 155.391 +0,06 Qd8e8 Ng4xh6 c4c3 Kg1h2 Re6xh6 Ne4xc3 Qe8f7 Nc3e4 Kh8g8 Bb2c1 Rh6h4 Bc1g5 Rh4h8 Rg3f3 Qf7d7 Ne4g3 Nd5c7 Rf3f4 d6d5 Bb1f5 Qd7f7 Qd1d4
17 07:24 48.232.427 108.566 +0,30 Nb4d3
17 08:29 52.964.014 104.144 +0,29 Nb4d3 Bb1xd3
17 09:22 56.997.776 101.349 -0,05 Nb4d3 Bb1xd3 c4xd3 Qd1d2 Qd8e8 Ng4xh6 Re6xe4 Re1xe4 Qe8xe4 Bb2xg7+ Bf8xg7 Nh6f7+ Kh8g8 Qd2b2 Qe4e1+ Kg1h2 Qe1c3 Qb2xb7 Ra8f8 Qb7xd5 Rf8xf7 Qd5a8+ Kg8h7 Qa8e4+ Kh7h8 Qe4e8+ Rf7f8 Qe8h5+ Kh8g8 Qh5d5+ Kg8h8 Qd5h5+
17 09:40 58.316.027 100.512 +0,08 Qd8e8 Ng4xh6 c4c3 Kg1h2 Re6xh6 Ne4xc3 Qe8f7 Nc3e4 Kh8g8 Bb2c1 Rh6h4 Bc1g5 Rh4h8 Rg3f3 Qf7d7 Ne4g3 Nd5c7 Rf3f4 Nb4d5 Rf4f3 Nd5e7 Bb1e4 Bb7xe4
17 09:43 58.507.434 100.382 +0,08 Qd8e8 Ng4xh6 c4c3 Kg1h2 Re6xh6 Ne4xc3 Qe8f7 Nc3e4 Kh8g8 Bb2c1 Rh6h4 Bc1g5 Rh4h8 Rg3f3 Qf7d7 Ne4g3 Nd5c7 Rf3f4 Nb4d5 Rf4f3 Nd5e7 Bb1e4 Bb7xe4

18 10:29 61.752.068 98.189 -0,08 Qd8e8 Ng4xh6
18 12:02 68.780.005 95.312 -0,05 Nb4d3 Bb1xd3 c4xd3 Qd1d2 Qd8e8 Ng4xh6 Re6xe4 Re1xe4 Qe8xe4 Bb2xg7+ Bf8xg7 Nh6f7+ Kh8g8 Qd2b2 Qe4e1+ Kg1h2 Qe1c3 Qb2xb7 Ra8f8 Qb7xd5 Rf8xf7 Qd5a8+ Kg8h7 Qa8e4+ Kh7h8 Qe4e8+ Rf7f8 Qe8h5+ Kh8g8 Qh5d5+ Kg8h8 Qd5h5+
18 18:00 93.800.654 86.859 -0,05 Nb4d3 Bb1xd3 c4xd3 Qd1d2 Qd8e8 Ng4xh6 Re6xe4 Re1xe4 Qe8xe4 Bb2xg7+ Bf8xg7 Nh6f7+ Kh8g8 Qd2b2 Qe4e1+ Kg1h2 Qe1c3 Qb2xb7 Ra8f8 Qb7xd5 Rf8xf7 Qd5a8+ Kg8h7 Qa8e4+ Kh7h8 Qe4e8+ Rf7f8 Qe8h5+ Kh8g8 Qh5d5+ Kg8h8 Qd5h5+
The search speed was too low; Komodo evaluates as drawn 25.- ..., Nd3.

Regards from Spain.

Ajedrecista.

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