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Subject: Re: A test position for chess programs

Author: Paulo Soares

Date: 02:00:18 10/17/00

Go up one level in this thread


On October 17, 2000 at 02:13:56, Uri Blass wrote:

>[D]1k1r3r/p1pq1b1p/1pPbpp2/8/Q2P1N2/P3BP2/B5PP/2R3K1 b - - 0 1
>
>The problem is to find Qc8.
>The position could happen in the game Tiger-Nimzo after 25.Rxc6 Nxc6 26.bxc6
>
>Uri

I think that after 1.... Qc8 2. Nd3! it's a line that gives the victory
for white. The menace is 3. Nc5! , that Tiger 12e analyzed.

Paulo


PIII-450

Rebel Tiger 12e, HT=64Mb
00:00:00.8	2,26	9	46276	Bxf4  Bxf4  Qxd4+  Qxd4  Rxd4  Bg3
00:00:00.6	2,24	9	56920	Bxf4  Bxf4  Qxd4+  Qxd4  Rxd4  Bg3  Rd2  Bc4  Rhd8  Bf4
Rb2
00:00:04.7	0,28	10	589950	Bxf4  cxd7  Bxe3+  Kf1  Bxc1  Qc6  Bxa3  Bc4  Bg6  Ba6
 Bd3+  Bxd3  Bd6
00:00:07.4	0,30	10	989131	Qc8
00:00:47.2	0,58	10	5249074	Qc8  Nd3  Rdg8  Bf4  Bxf4  Nxf4  Rd8  Re1  Rhe8
00:01:12.5	0,42	11	8121436	Qc8  Nd3  Ka8  Bc4  Rde8  Bf4
00:01:43.4	0,04	12	11778936	Qc8  Nd3  f5
00:03:29.5	0,00	13	24911026	Qc8  Nd3  Rdg8
00:06:03.4	-0,16	14	44223971	Qc8  Nd3  Rdg8  Nc5  Rg6  Nd7+  Ka8  d5  exd5  Bxb6
 a6  Be3  Rhg8  Rc2

Fritz6a, HT=100Mb
Soares,P - Fritz 6
1k1r3r/p1pq1b1p/1pPbpp2/8/Q2P1N2/P3BP2/B5PP/2R3K1 b - - 0 1

Analysis by Fritz 6:

1...Bxf4 2.Bxf4 Qxd4+ 3.Qxd4 Rxd4
  -+  (-1.94)   Depth: 1/6   00:00:00
1...Bxf4 2.Bxf4 Qxd4+ 3.Qxd4 Rxd4 4.Be3 Rd3
  -+  (-1.97)   Depth: 5/16   00:00:00  4kN
1...Bxf4!
  -+  (-2.28)   Depth: 6/15   00:00:00  11kN
1...Bxf4!
  -+  (-2.28)   Depth: 6/15   00:00:00  11kN
1...Bxf4!
  -+  (-2.28)   Depth: 6/15   00:00:00  11kN
1...Bxf4!
  -+  (-2.28)   Depth: 6/15   00:00:00  11kN
1...Bxf4!
  -+  (-2.28)   Depth: 6/15   00:00:00  11kN
1...Bxf4 2.Bxf4 Qxd4+ 3.Qxd4 Rxd4 4.Bg3 Rd2 5.Bc4
  -+  (-2.34)   Depth: 6/15   00:00:00  12kN
1...Bxf4 2.Bxf4 Qxd4+ 3.Qxd4 Rxd4 4.Bh6 Rhd8 5.Bg7 Rd1+ 6.Rxd1
  -+  (-2.06)   Depth: 7/15   00:00:00  28kN
1...Bxf4 2.Bxf4 Qxd4+ 3.Qxd4 Rxd4 4.Bh6 Rhd8 5.Re1 R4d6 6.Bg7
  -+  (-2.34)   Depth: 8/18   00:00:00  65kN
1...Bxf4 2.Bxf4 Qxd4+ 3.Qxd4 Rxd4 4.Bg3 Rd2 5.Bc4 Rhd8 6.Re1
  -+  (-2.19)   Depth: 9/20   00:00:00  139kN
1...Bxf4 2.Bxf4 Qxd4+ 3.Qxd4 Rxd4 4.Bh6 Rhd8 5.Bc4 R4d6 6.Bg7
  -+  (-2.31)   Depth: 10/23   00:00:01  331kN
1...Bxf4 2.Bxf4 Qxd4+ 3.Qxd4 Rxd4 4.Bh6 Rd3 5.a4 Rhd8 6.Re1
  -+  (-2.47)   Depth: 11/24   00:00:02  782kN
1...Bxf4--
  -+  (-2.16)   Depth: 12/27   00:00:04  1357kN
1...Bxf4 2.cxd7 Bxe3+ 3.Kf1 Bxc1 4.Qc6 Bxa3 5.Bc4 Bg6 6.Ba6
  µ  (-1.00)   Depth: 12/30   00:00:07  2551kN
1...Bxf4--
  ³  (-0.69)   Depth: 13/27   00:00:27  9395kN
1...Bxf4
  ³  (-0.69)   Depth: 13/31   00:00:30  10690kN
1...Qc8
  µ  (-0.72)   Depth: 13/31   00:00:48  17184kN
1...Qc8 2.Ne2 Rhf8 3.Nc3 e5 4.dxe5 Bxe5 5.Bxb6 cxb6 6.Nb5
  µ  (-0.94)   Depth: 13/34   00:02:02  41352kN
1...Qc8--
  ³  (-0.63)   Depth: 14/37   00:05:39  114753kN
1...Qc8
  ³  (-0.63)   Depth: 14/37   00:06:24  130181kN

(Soares, Cabo Frio 17.10.2000)





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