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Subject: Re: Difficult? Position

Author: Ernst Walet

Date: 12:53:50 03/25/00

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On March 25, 2000 at 15:02:50, James Robertson wrote:

>Yesterday Insomniac played a game against CSTal(C). Who knows what engine it was
>using (it wasn't LG, as the notes said). During one of the games, Insomniac
>reached this position with black and played ... Nc4. At the time I suspected
>Bxh3 might be better, and confirmed this after the game.
>
>r1b1r1k1/pp3ppp/3b4/3pn3/3N3q/2P1B2P/PP2BPP1/R2Q1RK1 b - - bm Bxh3;
>
>1. ... Bxh3 2. gxh3? Qxh3 3. Bf4 {Re1? Nd3!} Nf3+ 4. Nxf3 Bxf4 5. Qxd5 Re6 6.
>Qxe6 Qxe6 and black wins.
>
>Unfortunately, this position completely stumped Insomniac. What do other
>programs think?
>
>James

Fritz6a agrees with your assumption, here´s the output.

Ernst.

New position
r1b1r1k1/pp3ppp/3b4/3pn3/3N3q/2P1B2P/PP2BPP1/R2Q1RK1 b - - 0 1

Analysis by Fritz 6:

1...Nc4 2.Qa4 Be6 3.Nxe6 Rxe6
  ³  (-0.31)   Depth: 4/16   00:00:00  2kN
1...Nc4 2.Qa4 Be6 3.Nxe6 Rxe6
  ³  (-0.31)   Depth: 4/16   00:00:00  2kN
1...Nc4 2.Qa4 Be6 3.Nxe6 Rxe6
  ³  (-0.31)   Depth: 4/16   00:00:00  2kN
1...Nc4 2.Qa4 Be6 3.Nxe6 Rxe6
  ³  (-0.31)   Depth: 4/16   00:00:00  2kN
1...Nc4 2.Qa4 Be6 3.Nxe6 Rxe6
  ³  (-0.31)   Depth: 4/16   00:00:00  2kN
1...Nc4 2.Qa4 Be6 3.Nxe6 Rxe6
  ³  (-0.31)   Depth: 4/16   00:00:00  2kN
1...Nc4 2.Qa4 Be6 3.Nxe6 Rxe6
  ³  (-0.31)   Depth: 4/16   00:00:00  2kN
1...Nc4 2.Qa4 Be6 3.Nxe6 Rxe6
  ³  (-0.31)   Depth: 4/16   00:00:00  2kN
1...Nc4 2.Qa4 Be6 3.Nxe6 Rxe6
  ³  (-0.31)   Depth: 4/16   00:00:00  2kN
1...Nc4 2.Qa4 Be6 3.Nxe6 Rxe6
  ³  (-0.31)   Depth: 4/16   00:00:00  2kN
1...Nc4 2.Qa4 Be6 3.Nxe6 Rxe6 4.Rfe1
  =  (-0.06)   Depth: 5/20   00:00:00  7kN
1...Nc4 2.Bc1 Bc5 3.Nf3 Qf6 4.Qxd5 Rxe2 5.Qxc4
  =  (-0.13)   Depth: 6/20   00:00:00  58kN
1...Nc4 2.Bc1 Be6 3.b3 Ne5 4.Re1 Rac8
  =  (-0.09)   Depth: 7/26   00:00:00  168kN
1...Nc4 2.Bc1 Be6 3.b3 Ne5 4.Re1 Rac8 5.Qd2
  =  (-0.09)   Depth: 8/22   00:00:01  422kN
1...Nc4 2.Bc1 Bc5 3.Bf3 Be6 4.Nxe6 fxe6 5.b3 Nb6 6.Qd3
  =  (-0.03)   Depth: 9/27   00:00:04  1195kN
1...Nc4 2.Bc1 Bd7 3.Re1 Qf6 4.b3 Ne5 5.Qd2 Rac8 6.a3
  =  (0.03)   Depth: 10/30   00:00:11  3311kN
1...Nc4 2.Bc1 Bd7 3.Re1 Re4 4.Nf3 Qe7 5.b3 Nb6
  =  (0.00)   Depth: 11/29   00:00:32  9327kN
1...Nc4 2.Bc1 Be6 3.Re1 Rac8 4.Bxc4 Rxc4 5.Nf5 Qd8 6.Nxd6
  =  (0.06)   Depth: 12/31   00:01:25  25525kN
1...Bxh3
  =  (0.03)   Depth: 12/31   00:02:26  45306kN
1...Bxh3 2.gxh3 Qxh3 3.Bf4 Nf3+ 4.Nxf3 Bxf4 5.Re1 Re6 6.Bd3
  ³  (-0.50)   Depth: 12/34   00:03:15  61524kN
1...Bxh3!
  µ  (-0.81)   Depth: 13/34   00:06:56  130465kN
1...Bxh3! 2.Re1 Bg4 3.g3 Qh5 4.Bf4 Nf3+ 5.Bxf3 Rxe1+ 6.Qxe1
  µ  (-1.28)   Depth: 13/36   00:12:13  230314kN




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