Author: Vincent Diepeveen
Date: 14:00:19 01/04/01
Go up one level in this thread
On January 04, 2001 at 11:12:05, Jeroen Noomen wrote:
>On January 04, 2001 at 10:51:35, Steve Maughan wrote:
>
>Hi,
>
>The move 27 Ne1! leads to a forced draw. The interesting aspect is, that
>computer programs spot 27 ... Qa7! after a while and then give up the line
>because material is lost. Still, looking a bit further gives us the following
>possibility:
>27 Ne1! Qa7! 28 Qxf6 Qa3 29 Bxg6 hxg6 30 Nd3! Qc3! 31 Rf1! Rxa2 32 Ne5 Qxb4 33
>Qf7+ with a draw by perpetual check.
>
>Jeroen
Diep single cpu spots at 13 ply the perpetual so it plays Ra7 there
to prevent it.
Analysis mode is on
process 0: engineflags = 0 denktime=10000000 maxtime=10000000
00:00 6 (0) 1 0.47 Bd3xg6 Qg7xg6
00:00 45 (0) 1 0.55 g2-g3 Bg6xd3 c2xd3
00:00 61 (0) 1 0.56 Nf3-e1 Bg6xd3 Ne1xd3
00:00 175 (0) 2 0.56 Nf3-e1 Bg6xd3 Ne1xd3
00:00 693 (0) 3 0.56 Nf3-e1 Bg6xd3 Ne1xd3
++ d3-g6
00:00 1143 (0) 3 0.68 Bd3xg6 Qg7xg6 Nf3-e1
00:00 3287 (0) 4 0.17 Bd3xg6 Qg7xg6 Nf3-e1 e6-e5
++ f3-e1
00:00 4112 (0) 4 0.33 Nf3-e1 Bg6xd3 Ne1xd3 e6-e5 d4xe5 f6xe5
++ g2-g3
00:00 5054 (0) 4 0.39 g2-g3 Bg6xd3 c2xd3 Kg8-f7
00:00 11776 (0) 5 0.38 g2-g3 Bg6xd3 c2xd3 Kg8-f7 h2-h3
00:00 40048 (0) 6 0.45 g2-g3 Bg6xd3 c2xd3 Qg7-g6 Nf3-h4 Qg6xd3 Qd8xf6
00:01 80919 (0) 7 0.25 g2-g3 Bg6xd3 c2xd3 Qg7-g6 Nf3-e1 Kg8-f7 h2-h3 Qg6-h5
++ f3-e1
00:02 109164 (0) 7 0.44 Nf3-e1 Bg6xd3 Ne1xd3 Qg7-g4 f2-f4 Kg8-f7 g2-g3
00:03 191971 (0) 8 0.23 Nf3-e1 Bg6xd3 Ne1xd3 Qg7-g4 f2-f4 Kg8-f7 g2-g3 Qg4-e2
++ g2-g3
00:07 363534 (0) 8 0.25 g2-g3 Bg6xd3 c2xd3 Qg7-g6 Kg1-g2 Kg8-f7 Nf3-e1 Qg6-f5 Kg
2-g1
++ h2-h3
00:14 682084 (0) 8 0.31 h2-h3 Bg6xd3 c2xd3 Kg8-f7 g2-g3 Qg7-g6 Qd8-c8 Nf8-d7 Nf3
-e1
00:20 969325 (0) 9 0.00 h2-h3 Bg6xd3 c2xd3 Kg8-f7 Nf3-e1 e6-e5 d4xe5 f6xe5 Qd8-c
8 Nf8-d7
++ g2-g3
00:23 1121853 (0) 9 0.20 g2-g3 Bg6xd3 c2xd3 Qg7-g6 Kg1-g2 Kg8-f7 Nf3-e1 Qg6-f5 h
2-h3 Qf5-g5
++ f3-e1
00:26 1270229 (0) 9 0.24 Nf3-e1 Bg6xd3 Ne1xd3 Qg7-g4 f2-f4 Qg4-e2 Qd8xf6 Qe2xc2
Nd3-c1
00:38 1913066 (0) 10 0.08 Nf3-e1 Bg6xd3 Ne1xd3 Qg7-g4 f2-f4 Qg4-e2 Qd8xf6 Qe2xc2
Qf6-g5 Nf8-g6 Nd3-c1
++ g2-g3
03:30 9988716 (0) 11 -0.96 Nf3-e1 Qg7-a7 Qd8xf6 Qa7-a3 Bd3xg6 h7xg6 Ne1-d3 Qa3-c
3 Ra1-f1 Ra8xa2 Nd3-e5 Qc3xb4 Qf6-f7 Kg8-h8 Qf7-e8 Qb4-d6 Ne5xg6 Kh8-g7
++ g2-g3
03:56 11238395 (0) 11 -0.03 g2-g3 Bg6xd3 c2xd3 Qg7-g6 Ra1-d1 Ra8xa2 Qd8xb8 Ra2-b
2 Qb8-d6 Qg6-g4 Kg1-g2 Rb2-c2
++ g1-f1
06:34 18382421 (0) 11 -0.02 Kg1-f1 Bg6xd3 c2xd3 Qg7-g6 Nf3-e1 Qg6-f5 Qd8-c7 Qf5-
g4 Ne1-c2 Qg4-g6 Na2-c1 Ra8xa1 Nc2xa1
07:19 20586982 (0) 12 -0.19 Kg1-f1 Bg6xd3 c2xd3 Qg7-g6 Nf3-e1 Qg6-g4 Ne1-f3 Qg4-
f5 Ra1-d1 Ra8xa2 Qd8xb8 Ra2-b2 Qb8-d6
++ g2-g3
10:10 28493868 (0) 12 -0.00 g2-g3 Bg6xd3 c2xd3 Kg8-f7 Ra1-d1 Nf8-g6 Rd1-d2 Qg7-f
8 Qd8-b6 Qf8-e7 Rd2-c2 Ng6-f8 h2-h3
17:08 48041432 (0) 13 -0.20 g2-g3 Bg6xd3 c2xd3 Kg8-f7 Ra1-b1 Nf8-d7 Na2-c1 Ra8-a
7 Nc1-b3 Qg7-f8 Qd8xf8 Nd7xf8 Nb3-a5 Nf8-g6 Rb1-c1
++ f3-e1
23:19 65318942 (0) 13 -0.00 Nf3-e1 Qg7-a7 Qd8xf6 Qa7-a3 Bd3xg6 h7xg6 Ne1-d3 Qa3-
c3 Ra1-f1 Ra8xa2 Nd3-e5 Ra2-a7 Ne5xg6 Qc3xb4 Ng6xf8 Qb4xf8 Qf6xe6
45:48 126608026 (0) 14 -0.06 Nf3-e1 Qg7-a7 Qd8xf6 Qa7-a3 Bd3xg6 h7xg6 Ne1-d3 Qa3
-c3 Ra1-f1 Ra8xa2 Nd3-e5 Ra2-a7 Ne5xg6 Qc3xb4 Ng6xf8 Qb4xf8 Qf6xe6 Kg8-h8 Qe6-e5
On January 04, 2001 at 11:12:05, Jeroen Noomen wrote:
>On January 04, 2001 at 10:51:35, Steve Maughan wrote:
>
>Hi,
>
>The move 27 Ne1! leads to a forced draw. The interesting aspect is, that
>computer programs spot 27 ... Qa7! after a while and then give up the line
>because material is lost. Still, looking a bit further gives us the following
>possibility:
>27 Ne1! Qa7! 28 Qxf6 Qa3 29 Bxg6 hxg6 30 Nd3! Qc3! 31 Rf1! Rxa2 32 Ne5 Qxb4 33
>Qf7+ with a draw by perpetual check.
>
>Jeroen
>
>
>
>>[Event "?"]
>>[Site "Maastricht"]
>>[Date "2001.01.04"]
>>[Round "3"]
>>[White "Rebel 11"]
>>[Black "John van der Wiel"]
>>[ECO "B15"]
>>[Result "*"]
>>
>>1. e4 {4s} c6 {0s} 2. d4 {9s} d5 {1s} 3. Nc3 {1s} a6 {3s}
>>4. Be2 {10s} b5 {1s} 5. a3 {15s} e6 {1s} 6. Nf3 {8s} Nf6
>>{1s} 7. e5 {8s} Nfd7 {1s} 8. Bg5 {17s} Be7 {13s} 9. Bxe7
>>{1s} Qxe7 {1s} 10. b4 {2s} a5 {3s} 11. Na2 {8s} axb4 {5s}
>>12. axb4 {1s} O-O {3s} 13. Bd3 {4s} f6 {5s} 14. exf6 {2s}
>>gxf6 {3s} 15. O-O {12s} Rf7 {1s} 16. Re1 {10s} Nf8 {2s}
>>17. Nh4 {22s} Qd8 {2s} 18. Re3 {12s} Rg7 {1s} 19. Rg3 {18s}
>>Qe7 {2s} 20. Qf3 {15s} Rxg3 {3s} 21. Qxg3+ {0s} Qg7 {7s}
>>22. Qd6 {2s} Qd7 {7s} 23. Qf4 {1s} Qg7 {6s} 24. Nf3 {10s}
>>Bd7 {2s} 25. Qc7 {10s} Be8 {4s} 26. Qd8 {2s} Bg6 {8s} *
>>
>>[d]rn1Q1nk1/6qp/2p1ppb1/1p1p4/1P1P4/3B1N2/N1P2PPP/R5K1 w - -
>>
>>The position is getting tricky. Shredder's score fluctuates widely (+0.42 to
>>-1.29) as it gets to grips with the tactics of the position. This is the first
>>move when Shredder think Black is winning!
>>
>> 1.00 0:00 +0.42-- 27.Bxg6 Qxg6 28.g3 (1)
>> 1.00 0:00 +0.22 27.Bxg6 Qxg6 28.g3 (4)
>> 1.00 0:00 +0.42++ 27.Ne1 Bxd3 28.Nxd3 Qg4 29.f4 Qf5 30.Nc5 Kf7 31.Qc7+ Ke8
>>32.Qd6 Qxc2 33.Nxe6 Rxa2 34.Qxb8+ Kf7 (67)
>> 1.00 0:00 +0.42 27.Ne1 Bxd3 28.Nxd3 Qg4 29.f4 Qf5 30.Nc5 Kf7 31.Qc7+ Ke8
>>32.Qd6 Qxc2 33.Nxe6 Rxa2 34.Qxb8+ Kf7 (68)
>> 2.00 0:00 +0.42 27.Ne1 Bxd3 28.Nxd3 Qg4 29.f4 Qf5 30.Nc5 Kf7 31.Qc7+ Ke8
>>32.Qd6 Qxc2 33.Nxe6 Rxa2 34.Qxb8+ Kf7 (87) 8.7
>> 3.00 0:00 +0.42 27.Ne1 Bxd3 28.Nxd3 Qg4 29.f4 Qf5 30.Nc5 Kf7 31.Qc7+ Ke8
>>32.Qd6 Qxc2 33.Nxe6 Rxa2 34.Qxb8+ Kf7 (151) 15.1
>> 4.00 0:00 +0.42 27.Ne1 Bxd3 28.Nxd3 Qg4 29.f4 Qf5 30.Nc5 Kf7 31.Qc7+ Ke8
>>32.Qd6 Qxc2 33.Nxe6 Rxa2 34.Qxb8+ Kf7 (370) 37.0
>> 5.00 0:00 +0.42 27.Ne1 Bxd3 28.Nxd3 Qg4 29.f4 Qf5 30.Nc5 Kf7 31.Qc7+ Ke8
>>32.Qd6 Qxc2 33.Nxe6 Rxa2 34.Qxb8+ Kf7 (731) 73.1
>> 6.00 0:00 +0.42 27.Ne1 Bxd3 28.Nxd3 Qg4 29.f4 Qf5 30.Nc5 Kf7 31.Qc7+ Ke8
>>32.Qd6 Qxc2 33.Nxe6 Rxa2 34.Qxb8+ Kf7 (1.981) 94.3
>> 7.01 0:00 +0.42 27.Ne1 Bxd3 28.Nxd3 Qg4 29.f4 Qf5 30.Nc5 Kf7 31.Qc7+ Ke8
>>32.Qd6 Qxc2 33.Nxe6 Rxa2 34.Qxb8+ Kf7 (4.742) 152.9
>> 8.01 0:00 +0.42 27.Ne1 Bxd3 28.Nxd3 Qg4 29.f4 Qf5 30.Nc5 Kf7 31.Qc7+ Ke8
>>32.Qd6 Qxc2 33.Nxe6 Rxa2 34.Qxb8+ Kf7 (11.255) 123.6
>> 9.01 0:00 +0.42 27.Ne1 Bxd3 28.Nxd3 Qg4 29.f4 Qf5 30.Nc5 Kf7 31.Qc7+ Ke8
>>32.Qd6 Qxc2 33.Nxe6 Rxa2 34.Qxb8+ Kf7 (25.684) 170.0
>> 10.01 0:00 +0.42 27.Ne1 Bxd3 28.Nxd3 Qg4 29.f4 Qf5 30.Nc5 Kf7 31.Qc7+ Ke8
>>32.Qd6 Qxc2 33.Nxe6 Rxa2 34.Qxb8+ Kf7 (78.486) 223.6
>> 11.01 0:01 +0.17-- 27.Ne1 Bxd3 28.Nxd3 Qg4 29.f4 Qe2 30.Qxf6 Qe3+ 31.Nf2
>>Nbd7 32.Qg5+ Kh8 33.Nc1 Rxa1 34.Qe5+ Nxe5 (488.844) 245.2
>> 11.01 0:07 +0.04 27.Ne1 Bxd3 28.Nxd3 Qg4 29.f4 Qe2 30.Qxf6 Qe3+ 31.Kh1 Nbd7
>>32.Qg5+ Ng6 33.Re1 Qd2 34.Nac1 Ra2 (1.841.695) 231.6
>> 12.01 1:10 -0.21-- 27.Ne1 Qa7 28.Qxf6 Qa3 29.Bxg6 hxg6 30.Qg5 Qb2 31.Qxg6+
>>Nxg6 32.Nd3 Rxa2 33.Nxb2 Rxa1+ 34.Nd1 (15.581.300) 221.8
>> 12.01 1:13 -0.71-- 27.Ne1 Qa7 28.Qxf6 Qa3 29.Bxg6 hxg6 30.Qg5 Qb2 31.Qxg6+
>>Nxg6 32.Nd3 Qxa1+ 33.Ne1 Rxa2 (16.462.900) 222.9
>> 12.01 1:40 -1.29 27.Ne1 Qa7 28.Bxg6 hxg6 29.Qxf6 Qa3 30.Nd3 Qc3 31.Rc1 Rxa2
>>32.Ne5 Qxb4 33.Nxg6 Ra7 34.Qh8+ Kf7 35.Ne5+ Ke8 36.c3 (22.759.399) 226.7
>> 12.02 1:43 -1.28++ 27.Bxg6 Qxg6 28.Ne1 Qe4 29.Rd1 Ra3 (23.491.047) 227.4
>> 12.02 1:45 -0.93++ 27.Bxg6 Qxg6 28.Ne1 Qe4 29.Rd1 Rxa2 30.Qxb8 Qe2 31.Qg3+
>>Ng6 32.Rc1 Qd2 33.Nd3 Qc3 (24.164.203) 228.0
>> 12.02 2:26 -0.93 27.Bxg6 Qxg6 28.Ne1 Qe4 29.Rd1 Rxa2 30.Qxb8 Qe2 31.Qg3+ Ng6
>>32.Rc1 Qd2 33.Nd3 Rxc2 34.Ra1 (33.560.313) 228.4
>> 12.03 2:29 -0.92++ 27.h4 Bxd3 28.cxd3 Qa7 (34.233.280) 228.5
>> 12.03 2:33 -0.57++ 27.h4 Bxd3 28.cxd3 Qa7 29.Qxf6 Qxa2 30.Qg5+ Kf7 31.Ne5+
>>Ke8 32.Rxa2 h6 33.Rxa8 (35.093.422) 228.7
>> 12.03 3:15 -0.48 27.h4 Bxd3 28.cxd3 Kf7 29.Qd6 Qg4 30.Rc1 Rxa2 31.Qxb8 Ng6
>>32.Qc7+ Ne7 33.Rxc6 Rb2 (44.029.800) 225.2
>> 12.04 3:21 -0.47++ 27.h3 Bxd3 28.cxd3 Kf7 (45.333.388) 225.3
>> 12.04 3:39 -0.13 27.h3 Bxd3 28.cxd3 Qg6 29.Re1 Qxd3 30.Nc1 Qxf3 31.gxf3 Nbd7
>>32.Qxa8 (49.414.874) 224.7
>> 13.01 4:46 -0.20 27.h3 Bxd3 28.cxd3 Kf7 29.Qd6 Qh6 30.Re1 Rxa2 31.Qxb8 Rc2
>>32.Qa7+ Kg8 33.Qa3 Qf4 34.Qb3 (64.238.099) 224.2
>> 14.01 8:25 -0.16 27.h3 Bxd3 28.cxd3 Kf7 29.Qd6 Qg6 30.Rd1 Rxa2 31.Qxb8 Rc2
>>32.Ne1 Nd7 33.Qc7 Rc3 34.Qd6 Qe4 (113.313.655) 224.0
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