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Subject: Re: start your engines

Author: John Merlino

Date: 22:03:22 06/14/04

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On June 15, 2004 at 00:51:12, Steffen Jakob wrote:

>On June 14, 2004 at 22:38:04, Mike Byrne wrote:
>
>>On June 14, 2004 at 22:24:15, Mike Byrne wrote:
>>
>>>The bottom position is from the Chess Informant anotations of the famous game 19
>>>of the Spassky - Petrosian match in 1969.  A position from this game is Nolot #
>>>5
>>>
>>>[d]r2qrb1k/1p1b2p1/p2ppn1p/8/3NP3/1BN5/PPP3QP/1K3RR1 w - -
>>>
>>>and there is a recent thread regarding this game.
>>>
>>>
>>>
>>>I am pretty sure it is a forced mate starting with 1.... Rg5!! although I am
>>>still awaiting confirmation. GM Geller  provided this move in his annotations
>>>,but he did not indicate it was mate.
>>>
>>>[d]r3rb1k/1p1b2p1/pq2p1Qp/8/4Np2/1B3N2/PPP4P/1K4R1 w - - 0 4
>>>
>>>...Rg5!
>>
>>it mat not be an easily discovered forced mate -- Crafty is now seeing 1. ...Rg5
>>2. e5!?  which may stop the forced mate , but clearly hangs the queen...
>
>I also get Rg5 e5 after a while (Hossa 1.163):
>
>    6    -0.01    0.18    40730 1.e4f6 b6xg1 2.g6xg1<check> g7xf6 3.g1d4 d7c6
>                                4.d4xf6 Kh7<qs> 5.f6xf4<qs>
>   <6>   -0.01    0.41   112371 1.e4f6 b6xg1 2.g6xg1<check> g7xf6 3.g1d4 d7c6
>                                4.d4xf6 Kh7<qs> 5.f6xf4<qs>
>    7    +0.09    0.46   126965 1.e4f6 b6xg1 2.f3xg1<check> g7xf6 3.g6xf6
>f8g7<check>
>                                4.f6xf4 Kg8 5.g1f3
>   <7>   +0.09    1.12   354597 1.e4f6 b6xg1 2.f3xg1<check> g7xf6 3.g6xf6
>f8g7<check>
>                                4.f6xf4 Kg8 5.g1f3
>    8    -0.13    1.31   405740 1.e4f6 b6xg1 2.g6xg1<check> g7xf6 3.g1d4 d7c6
>                                4.d4xf6 f8g7<check> 5.f6xf4 a8c8
>   <8>   -0.13    7.81  2425441 1.e4f6 b6xg1 2.g6xg1<check> g7xf6 3.g1d4 d7c6
>                                4.d4xf6 f8g7<check> 5.f6xf4 a8c8
>    9    -0.05    8.08  2508839 1.e4f6 b6xg1 2.f3xg1<check> g7xf6 3.g6xf6
>f8g7<check>
>                                4.f6xf4 e8f8 5.f4c1 f8f2 6.h4
>  2/9    +0.00   10.86  3387569 1.g1d1 d7c6 2.e4g5 h6xg5 3.f3xg5 c6e4
>                                4.g5f7 Kg8<check> 5.f7h6<f2attack > Kh8<check>
>6.h6f7 Kg8
>                                7.f7h6 Kh8 8.h6f7 Kg8
>  7/9    +0.08   18.17  5697897 1.c3 d7c6 2.e4f6 b6xg1 3.f3xg1<check> g7xf6
>                                4.g6xf6 f8g7<check> 5.f6xf4 Kh7 6.f4f7
>!16/9    +0.29   24.19  7538691 1.g1g5
>!   9    +2.11   25.93  8075555 1.g1g5 b6d8 2.f3e5 d8e7 3.e5f7 e7xf7<check>
>                                4.g6xf7 h6xg5 5.f7xd7 e8e7
>   <9>   +2.11   26.09  8135809 1.g1g5 b6d8 2.f3e5 d8e7 3.e5f7 e7xf7<check>
>                                4.g6xf7 h6xg5 5.f7xd7 e8e7
>?  10    +1.68   31.37  9936285 1.g1g5 b6d8 2.f3e5 d8e7 3.e5f7 e7xf7<check>
>                                4.g6xf7 h6xg5 5.f7xd7 e8e7 6.d7d4
>  <10>   +1.68   33.15 10587221 1.g1g5 b6d8 2.f3e5 d8e7 3.e5f7 e7xf7<check>
>                                4.g6xf7 h6xg5 5.f7xd7 e8e7 6.d7d4
>!  11    +2.10   45.15 14329678 1.g1g5
>!  11    +2.66   52.19 16457868 1.g1g5 b6d8 2.f3e5 d8e7 3.g5f5 d7c6
>                                4.e5f7 e7xf7<check> 5.f5xf7 e5 6.e4d6 e8e7
>                                7.f7xe7<qs> f8xe7<qs>
>  <11>   +2.66    1:06 21627909 1.g1g5 b6d8 2.f3e5 d8e7 3.g5f5 d7c6
>                                4.e5f7 e7xf7<check> 5.f5xf7 e5 6.e4d6 e8e7
>                                7.f7xe7<qs> f8xe7<qs>
>!  12    +3.08    2:02 38821542 1.g1g5
>!  12    +3.89    3:42 70587561 1.g1g5 b6d8 2.f3e5 d8e7 3.g5h5 d7c6
>                                4.e4g5 e7xg5 5.g6xg5 f8d6 6.g5xf4 a8d8
>  <12>   +3.89    7:19 141019581 1.g1g5 b6d8 2.f3e5 d8e7 3.g5h5 d7c6
>                                4.e4g5 e7xg5 5.g6xg5 f8d6 6.g5xf4 a8d8
>   13    +4.10   11:26 215801394 1.g1g5 b6d8 2.f3e5 d8e7 3.g5h5 d7c6
>                                4.e4g5 e7xg5 5.g6xg5 f3 6.g5g3 f2
>                                7.e5f7 Kh7<qs> 8.g3xf2<qs>
>  <13>   +4.10   19:00 356405709 1.g1g5 b6d8 2.f3e5 d8e7 3.g5h5 d7c6
>                                4.e4g5 e7xg5 5.g6xg5 f3 6.g5g3 f2
>                                7.e5f7 Kh7<qs> 8.g3xf2<qs>
>!  14    +4.52   34:49 647393678 1.g1g5
>!  14    +5.52   57:18 1078070888 1.g1g5 e5 2.g6xb6 d7c6 3.f3xe5 c6xe4
>                                4.g5h5 Kh7 5.b3f7 e8xe5 6.h5xe5 e4c6
>                                7.b6f2 g5
>
>Greetings,
>Steffen.

Confirmed. CM_SKR on a P4-2.4 also says Rg5 e5:

Time	Depth	Score	Positions	Moves
0:00	1/5	0.00	34043		4.Rd1 Bb5 5.Nfg5 hxg5 6.Nxg5 Bd3
					7.Nf7+ Kg8 8.Nh6+ Kh8 9.Nf7+
0:00	1/6	0.00	51839		4.Rd1 Bb5 5.Nfg5 hxg5 6.Nxg5 Bd3
					7.Nf7+ Kg8 8.Nh6+ Kh8 9.Nf7+
0:00	1/7	0.00	181358		4.Rd1 Bb5 5.Nfg5 hxg5 6.Nxg5 Bd3
					7.Nf7+ Kg8 8.Nh6+ Kh8 9.Nf7+
0:01	1/7	1.48	297321		4.Rg5 Qd8 5.Ne5 Qe7 6.Nf7+ Qxf7
					7.Qxf7 hxg5 8.Nxg5 Bc5 9.Qxd7
0:02	1/8	2.82	665017		4.Rg5 Qd8 5.Ne5 Qe7 6.Rh5 Bc6 7.Ng5
					Qxg5 8.Qxg5
0:06	1/9	3.17	1566010		4.Rg5 Qd8 5.Ne5 Qe7 6.Rh5 Rad8
					7.Ng5 Qxg5 8.Qxg5 Bb5 9.Nf7+ Kg8
					10.Qxd8 Rxd8 11.Nxd8
0:23	1/10	3.98	6085771		4.Rg5 e5 5.Qxb6 Bc6 6.Nxe5 Bxe4
					7.Nf7+ Kh7 8.Nxh6 Bc6 9.Qa5 g6
					10.Ng4
0:45	1/11	4.79	12322606	4.Rg5 e5 5.Qxb6 Bc6 6.Nxe5 Bxe4
					7.Rh5 Rad8 8.Nf7+ Kh7 9.Nxd8 Bf3
					10.Ne6 Bxh5 11.Nxf8+ Rxf8 12.Qxb7
1:55	1/12	5.13	31878699	4.Rg5 e5 5.Qxb6 Bc6 6.Nxe5 Bxe4
					7.Rh5 Kh7 8.Bf7 Rad8 9.Kc1 Rd6
					10.Qxd6 Bxd6 11.Bxe8
6:00	1/13	5.44	100551851	4.Rg5 e5 5.Qxb6 Bc6 6.Nxe5 Bxe4
					7.Rh5 Kh7 8.Bf7 Rad8 9.Kc1 Rd6
					10.Qb3 Re7 11.Bg8+ Kh8 12.Nf7+
					Rxf7 13.Bxf7
19:34	2/14	5.92	330216676	4.Rg5 e5 5.Qxb6 Bc6 6.Nxe5 Bxe4
					7.Nf7+ Kh7 8.Nxh6 g6 9.Ng4 Kh8
					10.Qf2 Re7 11.Qxf4 Rd8 12.Ne3
1:06:39	3/15	6.41	1135890423	4.Rg5 e5 5.Qxb6 Bc6 6.Nxe5 Bxe4
					7.Nf7+ Kh7 8.Nxh6 g6 9.Ng4 Rad8
					10.Nf6+ Kh8 11.Kc1 Rd6 12.Qxd6
					Bxd6 13.Nxe8 Be7 14.Re5

jm



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