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Subject: Re: First weekend in Leiden - Testpositions and 2 quotes

Author: Uri Blass

Date: 15:43:19 10/28/01

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On October 28, 2001 at 18:06:34, Gian-Carlo Pascutto wrote:

>[D]r1b1r1k1/5pbp/p1pQ1np1/q3n3/2pBP3/2N2P2/PP4PP/1KNR1B1R w - - 0 15
>
>Sjeng played b4, which loses. How long to avoid it, and how long
>to see it loses?

Junior7 needs 2 seconds(224 knodes on p200)
It does not see that b4 is losing in order to avoid it but it can see that
Bxe5 is better.


Sjeng - Fritz
r1b1r1k1/5pbp/p1pQ1np1/q3n3/2pBP3/2N2P2/PP4PP/1KNR1B1R w - - 0 1

Analysis by Junior 7:

15.a4 Bd7
  =  (-0.25)   Depth: 3   00:00:00
15.f4 Re6 16.Qc5 Qxc5 17.Bxc5
  =  (0.00)   Depth: 3   00:00:00  1kN
15.N1e2 Bd7
  =  (0.06)   Depth: 3   00:00:00  2kN
15.Be2 Bd7
  =  (0.09)   Depth: 3   00:00:00  2kN
15.Be2 Re6 16.Qc5 Qxc5 17.Bxc5
  =  (0.07)   Depth: 6   00:00:00  6kN
15.b4!
  ²  (0.39)   Depth: 6   00:00:00  10kN
15.b4! Qa3 16.Bxe5 Nxe4 17.Nxe4 Bxe5
  ²  (0.51)   Depth: 6   00:00:00  17kN
15.b4 Qa3
  =  (0.21)   Depth: 9   00:00:01  115kN
15.Bxe5 Qxe5 16.Qxe5 Rxe5 17.Bxc4 Rb8 18.Nd3 Re8
  ²  (0.40)   Depth: 9   00:00:02  224kN
15.Bxe5 Qxe5 16.Qxe5 Rxe5 17.Bxc4 Rb8 18.Nd3 Ra5 19.Ne2 Bd7
  ²  (0.55)   Depth: 12   00:00:07  821kN


>
>[D]4r1k1/1pr4p/p2p1qp1/P1nP3n/1RN1P3/2N2p2/2Q2PPP/1R4K1 w - - 0 26
>
>Sjeng played Rb6 and lost. How long to see it loses/avoid it?

0 seconds
This move is never consider to be best by Junior7(p200)

Junior again likes the square e5


Sjeng - Xinix
4r1k1/1pr4p/p2p1qp1/P1nP3n/1RN1P3/2N2p2/2Q2PPP/1R4K1 w - - 0 1

Analysis by Junior 7:

26.gxf3 Qxf3 27.Nxd6 Ree7
  ²  (0.34)   Depth: 3   00:00:00  1kN
26.gxf3 Qxf3 27.Nd2 Qg4+ 28.Kf1 Qh3+ 29.Kg1 Nf4
  ³  (-0.69)   Depth: 6   00:00:00  22kN
26.g3 Kh8 27.Qb2 Nxe4
  =  (-0.02)   Depth: 6   00:00:00  26kN
26.g3 Qd8 27.Nd2 Qf6 28.Qb2
  =  (0.15)   Depth: 9   00:00:00  57kN
26.e5!
  ²  (0.28)   Depth: 9   00:00:02  221kN
26.e5! Qg5 27.g3 dxe5 28.d6 Rd7 29.Nd5 Rc8
  ²  (0.29)   Depth: 9   00:00:03  353kN
26.e5 dxe5 27.d6 Rg7 28.Nd5 Qf5 29.Ne7+ Rgxe7 30.Qxf5 gxf5 31.dxe7 fxg2 32.Kxg2
Nf4+ 33.Kf3 Rxe7
  ²  (0.51)   Depth: 12   00:00:55  7946kN
26.e5 dxe5 27.d6 Rg7 28.Nd5 Qf5 29.Qa2 Nf4 30.Nce3 Qe6 31.Qc4 Ne2+ 32.Kh1 fxg2+
33.Kxg2 Nf4+ 34.Nxf4 Qxc4 35.Rxc4
  ²  (0.55)   Depth: 14   00:04:10  33639kN


Uri



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