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Subject: Re: Serious blunder by Junior 8 or excellent attack by CM? You decide.

Author: Mike Byrne

Date: 21:50:02 08/02/03

Go up one level in this thread


On August 03, 2003 at 00:33:57, John Merlino wrote:

>On August 02, 2003 at 22:05:27, Anson T J wrote:
>
>>[d]2r2rk1/p3ppbp/6p1/8/8/QPqBBP2/P1P3PP/2KR3R w - - 0 20
>>
>>Junior 8 played 20. Bf2
>>=  (0.00)  Depth: 16   0:03:29
>>
>>
>>The King 3.23 SKR then played
>>20... Rfd8!
>>-+  (-8.87)  Depth: 13   0:10:47
>>
>>and won.
>>
>>Does any other engine also want to play 20. Bf2 ? I'm not sure if White's
>>position lost before move 20. or if it was a blunder on move 20. that cost
>>Junior the game.
>>
>>Please post your evals and comments:
>
>Chessmaster 9000 (default personality), after a reasonably long search on a
>P4-2.4G, seems to think that White's best chance is Qa4, with only a slight eval
>advantage to Black (-0.18). After 20.Bf2, a 1-minute search gives an eval of
>-1.37 for 20...Rfd8.
>
>But my vote is for "excellent attack by CM", starting with 18...Qc3!! How many
>engines would not play this move and not gxf5?
>
>[D]1r3rk1/p3ppbp/2q3p1/5B2/8/QP2BP2/P1P3PP/2KR3R b - - 0 18
>
>Majestic Chess, for example, needs 18 seconds on my P4-2.4 to find Qc3....
>
>jm

excellent attack by CM gets my vote...

3:00 for Crafty to find Qc3 on my "slow" dual 1.7 Ghz P4 -

New game
1r3rk1/p3ppbp/2q3p1/5B2/8/QP2BP2/P1P3PP/2KR3R b - - 0 1

Analysis by Crafty 19.04 ST:

1...gxf5 2.Qxe7 Rfc8 3.Rd2
  +-  (1.89)   Depth: 4   00:00:00
1...gxf5 2.Qc5 Qa6 3.Rd7 Qxa2 4.Qxe7
  +-  (1.72)   Depth: 5   00:00:00
1...gxf5 2.Qc5 Qa6 3.Rd7 Qxa2 4.Qxe7
  +-  (1.72)   Depth: 5   00:00:00
1...gxf5 2.Qxe7 Rfc8 3.c4 Rc7 4.Rd8+ Rxd8 5.Qxd8+
  +-  (1.58)   Depth: 6   00:00:00  105kN
1...gxf5 2.Qxe7 Rfc8 3.c4 Rc7 4.Rd8+ Rxd8 5.Qxd8+
  +-  (1.58)   Depth: 6   00:00:00  175kN
1...gxf5
  ±  (1.25)   Depth: 7   00:00:00  381kN
1...gxf5 2.Qxa7 Rfc8 3.c4 Rb7 4.Qa5 e6 5.Rd8+ Bf8 6.Rxc8 Qxc8
  ±  (1.16)   Depth: 7   00:00:01  737kN
1...gxf5 2.Qxa7 Rfc8 3.c4 Rb7 4.Qa5 e6 5.Rd8+ Bf8 6.Rxc8 Qxc8
  ±  (1.16)   Depth: 7   00:00:01  1089kN
1...gxf5 2.Qc5 Qf6 3.Qd4 Qe6 4.Qd3 Qc8 5.Kb1
  +-  (1.61)   Depth: 8   00:00:02  1909kN
1...gxf5 2.Qc5 Qf6 3.Qd4 Qe6 4.Qd3 Qc8 5.Kb1
  +-  (1.61)   Depth: 8   00:00:05  4351kN
1...gxf5 2.Qc5 Qe6 3.Bf4 Rbc8 4.Qd5 Qe2 5.Rd2 Qa6
  +-  (1.53)   Depth: 9   00:00:06  5033kN
1...gxf5 2.Qc5 Qe6 3.Bf4 Rbc8 4.Qd5 Qe2 5.Rd2 Qa6
  +-  (1.53)   Depth: 9   00:00:07  6344kN
1...gxf5 2.Qc5 Qf6 3.Qd4 Qc6 4.Qd3 Bc3 5.Qxf5
  ±  (1.32)   Depth: 10   00:00:11  9702kN
1...gxf5 2.Qc5 Qf6 3.Qd4 Qc6 4.Qd3 Bc3 5.Qxf5
  ±  (1.32)   Depth: 10   00:00:23  20422kN
1...gxf5 2.Qc5 Qf6 3.Qd4 Qc6 4.Qd7 Qf6 5.Rd4 Qe5 6.Re1 Rfc8
  ±  (1.20)   Depth: 11   00:00:37  33055kN
1...gxf5 2.Qc5 Qf6 3.Qd4 Qc6 4.Qd7 Qf6 5.Rd4 Qe5 6.Re1 Rfc8
  ±  (1.20)   Depth: 11   00:01:00  53334kN
1...gxf5 2.Qc5 Qf6 3.Bd4 e5 4.Bb2 Qa6 5.Bxe5 Rb5 6.Qd6 Qxa2 7.Rhe1
  ±  (1.34)   Depth: 12   00:01:20  69887kN
1...Qc3
  ±  (0.87)   Depth: 12   00:03:00  155326kN

(Byrne, Secane, PA USA 03.08.2003)




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