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Subject: Re: Black played N-g4..!!

Author: Klaus Friedel

Date: 21:03:30 04/03/02

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On April 03, 2002 at 13:57:38, John Merlino wrote:

>On April 03, 2002 at 09:47:14, Art Basham wrote:
>
>>[D]5bk1/1r4r1/1pRp1n2/p2Pp2p/P3Pp2/1QB2PqN/1P2BNp1/6K1 b - - bm Ng4; id "Aemis
>>Test Suite No.100"; c0 "Schmidt Wl,2465 - Kaminski M.,2315, Warszawa (m) 1990";
>
>Chessmaster 8000 thinks that Qh4 is a better (and potentially winning) move:
>
>Time	Depth	Score	Positions	Moves
>0:00	1/3	0.51	1988		1...b5 2.axb5 a4 3.Qxa4
>0:00	1/3	0.50	2387		1...Rbc7 2.Qxb6 Rxc6 3.dxc6
>0:00	1/3	0.48	3140		1...Ne8 2.Rxb6 Ra7
>0:00	1/3	0.44	5281		1...Ng4 2.fxg4 hxg4 3.Nxf4 exf4
>					4.Rxb6
>0:00	1/4	0.44	9082		1...Ng4 2.fxg4 hxg4 3.Nxf4 exf4
>					4.Rxb6
>0:00	1/4	-0.28	18358		1...Nd7 2.Qc2 Nc5 3.b4
>0:00	2/5	-0.19	25682		1...Nd7 2.Qc2 Be7 3.b4 Bh4 4.Be1
>0:01	2/6	-0.13	71356		1...Nd7 2.Qb5 Nc5 3.b3 Kh7 4.Rxb6
>					Rxb6 5.Qxb6
>0:03	3/7	-0.07	214454		1...Nd7 2.Rc8 Kh7 3.Bd2 Nc5 4.Qb5
>					Rg8
>0:11	3/7	-0.45	634809		1...Qh4 2.Rc8 Rg3 3.Bxe5 Rxh3 4.Rxf8+
>					Kxf8 5.Bxd6+ Kg7 6.Nxh3 Qxh3
>0:26	3/8	-0.92	1501633		1...Qh4 2.Rxb6 Rg3 3.Rxb7 Rxh3
>					4.Rg7+ Bxg7 5.Qb8+ Kh7 6.Nxh3 Qxh3
>0:53	4/9	-0.92	3162209		1...Qh4 2.Bxe5 dxe5 3.d6+ Kh7 4.Qe6
>					Rbf7 5.Qf5+ Kh8 6.Qxe5 Nd7 7.Qd5
>2:42	4/10	-1.36	10105914	1...Qh4 2.Bxe5 dxe5 3.d6+ Kh7 4.Qe6
>					Nd7 5.Rc7 Rxc7 6.dxc7 Bc5 7.Qf5+
>					Kh6 8.Qe6+ Rg6 9.Qxg6+ Kxg6 10.c8=Q
>					Qxh3 11.Qxc5 Qh1+ 12.Nxh1 gxh1=Q+
>					13.Kxh1 Nxc5
>7:52	5/11	-1.16	30693600	1...Qh4 2.Bxe5 dxe5 3.d6+ Kh7 4.Qe6
>					Nd7 5.Rc8 Qg3 6.Bb5 Qg6 7.Qd5 Ra7
>					8.Bxd7 Raxd7 9.Rxf8 Qxd6
>
>jm


Hagrid agrees. Both Qh4 and Ng4 seem to be winning moves:

Analysis by Hagrid 0.6.36see:

1...Kg8-h8 2.Tc6xb6 Tb7xb6 3.Db3xb6
  ²  (0.37)   Tiefe: 1/2   00:00:00
1...Kg8-h8 2.Tc6xb6 Tb7xb6 3.Db3xb6
  ²  (0.37)   Tiefe: 2/2   00:00:00
1...Kg8-h8 2.Tc6xb6 Tb7xb6 3.Db3xb6
  ²  (0.37)   Tiefe: 3/4   00:00:00
1...Kg8-h8 2.Tc6xb6 Tb7xb6 3.Db3xb6
  ²  (0.37)   Tiefe: 4/6   00:00:00
1...Sf6-g4 2.f3xg4 h5xg4 3.Sh3xf4 e5xf4
  ²  (0.33)   Tiefe: 4/6   00:00:00
1...Sf6-g4 2.f3xg4 h5xg4 3.Sh3xf4 e5xf4 4.Tc6xb6 Tb7xb6 5.Db3xb6
  ²  (0.33)   Tiefe: 5/8   00:00:00
1...Sf6-g4 2.f3xg4 h5xg4 3.Sh3xf4 e5xf4 4.Tc6xb6 Tb7xb6 5.Db3xb6
  ²  (0.33)   Tiefe: 6/10   00:00:00  40kN
1...Sf6-g4 2.f3xg4 h5xg4 3.Le2xg4 Tg7xg4 4.Sf2xg4 Dg3xg4 5.Sh3-f2
  ²  (0.36)   Tiefe: 7/12   00:00:00  92kN
1...Sf6-g4 2.f3xg4 h5xg4 3.Le2xg4 Tg7xg4 4.Sf2xg4 Dg3xg4 5.Sh3-f2 Dg4-g3
6.Tc6xb6 Tb7xb6 7.Db3xb6
  ²  (0.68)   Tiefe: 8/14   00:00:00  305kN
1...b6-b5 2.a4xb5 Dg3-h4 3.Lc3xa5 Tg7-g3 4.La5-d8 Tb7-f7 5.Ld8xf6 Tf7xf6
  ²  (0.57)   Tiefe: 8/14   00:00:01  640kN
1...Sf6-d7 2.Db3-b5 Dg3-h4
  ²  (0.47)   Tiefe: 8/14   00:00:01  826kN
1...Sf6-d7 2.Tc6-c8 Dg3-h4 3.Db3-c4 b6-b5 4.Dc4-c6 Tb7-b6 5.Dc6-a8 b5xa4
6.Da8xa5
  ²  (0.38)   Tiefe: 9/15   00:00:02  1083kN
1...Dg3-h4 2.Le2-a6 Tb7-d7 3.Db3xb6 Tg7-g3 4.Lc3xa5 Tg3xh3 5.Sf2xh3 Dh4xh3
6.La6-e2
  ²  (0.39)   Tiefe: 10/18   00:00:05  2422kN
1...Sf6-h7
  ²  (0.28)   Tiefe: 10/18   00:00:05  2894kN
1...Dg3-h4 2.Le2-a6 Tg7-g3 3.La6xb7 Tg3xh3 4.Sf2xh3 Dh4xh3
  =  (0.18)   Tiefe: 11/19   00:00:09  4801kN
1...Dg3-h4 2.Db3-a2 Tg7-g3
  -+  (-1.73)   Tiefe: 12/21   00:00:44  25486kN
1...Dg3-h4 2.Le2-a6 Tg7-g3 3.La6xb7 Tg3xh3 4.Sf2xh3 Dh4xh3
  -+  (-1.63)   Tiefe: 13/22   00:01:07  40195kN
1...Dg3-h4 2.Le2-a6 Tg7-g3 3.La6xb7 Tg3xh3 4.Sf2xh3 Dh4xh3
  -+  (-1.53)   Tiefe: 14/25   00:01:47  65353kN
1...Dg3-h4 2.Lc3xe5 d6xe5 3.d5-d6+ Kg8-h7 4.Db3-e6 Kh7-h8 5.Le2-c4 Tb7-d7
6.De6xe5 Tg7-g3 7.Tc6xb6 Tg3xh3 8.Sf2xh3 Dh4-e1+
  -+  (-2.22)   Tiefe: 15/31   00:15:17  560109kN
1...Dg3-h4 2.Lc3xe5 d6xe5 3.d5-d6+ Kg8-h7 4.Db3-e6 Tg7-g3 5.De6-f5+ Kh7-g7
6.Le2-d3 Tb7-b8 7.Df5xe5 Tb8-d8 8.Ld3-e2 Tg3xh3 9.Tc6-c7+ Kg7-h8 10.Sf2xh3
Lf8xd6
  -+  (-2.60)   Tiefe: 16/35   00:35:59  1338171kN
1...Dg3-h4 2.Lc3xe5 d6xe5 3.d5-d6+ Kg8-h7 4.Db3-e6 Tg7-g3 5.De6-f5+ Kh7-g7
  -+  (-2.69)   Tiefe: 17/38   01:25:51  3210086kN
1...Dg3-h4 2.Lc3xe5 d6xe5 3.d5-d6+ Kg8-h7 4.Db3-e6 Tg7-g3 5.d6-d7 Sf6xd7
6.De6-f7+ Kh7-h8 7.Tc6-c8
  -+  (-2.79)   Tiefe: 18/44   05:50:03  146134kN

Klaus



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