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Subject: Re: Did HYDRA play perfect chess?

Author: Uri Blass

Date: 16:41:13 07/01/05

Go up one level in this thread


On July 01, 2005 at 14:25:23, Drexel,Michael wrote:

>On July 01, 2005 at 13:41:05, Otello Gnaramori wrote:
>
>>On July 01, 2005 at 09:18:09, Rolf Tueschen wrote:
>>
>>>Since my perfect chessmachine ROLF played only 75% of the HYDRA moves against
>>>Adams, you can see how far away HYDRA is still from perfect play. That is why
>>>it's still making sense if more GM play show events.
>>
>>It's a path near to perfect, perfection is a "chimera" , but it's stronger than
>>strongest humans listening to Mr. Adams words...that is why it's so damn
>>difficult to beat:
>
>Don´t spout Nonsense here.
>Hydra is a "strategical Patzer" like all the other machines.
>Just a couple of minutes ago I saw a game from it.
>White had a draw by repetition in this game despite of the opening 1.a3,2.b3?,
>but Shredder was even more a stupid than Hydra and lost.
>
>White could even win this game with 19.Rxd6!. An exchange sacrifice which leads
>to a strategical won position. I saw this move immediately.

strategical won position?
I do not understand.
Can you explain how did you get the consequence that white is winning?

Note that based on fruit Rxd6 is a good move but this conclusion is only result
of deep search.

OLIVIER-EVAN,S - Ares01,H, 10m + 10s, rated rapid 2005
[D]rn1r2k1/p5pp/1pRbp2q/3pNpn1/3P1N2/PP1QPP2/1B4PP/5RK1 w - - 0 1

Analysis by Fruit 2.1:

19.Ra1 Bxe5
  -+  (-2.29)   Depth: 1/10   00:00:00
19.Rb1 Bxe5
  -+  (-2.25)   Depth: 1/10   00:00:00
19.Rfc1 Bxe5 20.dxe5 Nxc6 21.Rxc6
  µ  (-1.23)   Depth: 1/10   00:00:00
19.Rcc1
  =  (0.00)   Depth: 1/12   00:00:00
19.Rc2 Bxe5 20.dxe5
  ±  (0.81)   Depth: 1/12   00:00:00
19.Rc2 Nd7
  ±  (0.79)   Depth: 2/12   00:00:00
19.Rc2 Nd7 20.Nc6 Bxf4 21.exf4
  ²  (0.47)   Depth: 3/12   00:00:00
19.Rc2 Nd7 20.Nc6 Bxf4 21.exf4
  ²  (0.47)   Depth: 4/12   00:00:00
19.Rc2 Nd7 20.Nc6 Rdc8 21.Re1
  ²  (0.50)   Depth: 5/12   00:00:00
19.Rc2 Bxe5 20.dxe5 Nd7 21.Bd4 Rac8 22.Rfc1
  ²  (0.40)   Depth: 6/20   00:00:00  51kN
19.Rc2 Bxe5 20.dxe5 Nd7 21.Bd4 Nf7 22.Qc3 Nc5 23.Bxc5 bxc5
  ²  (0.33)   Depth: 7/20   00:00:00  87kN
19.Rc2 Bxe5 20.dxe5 Nd7 21.Bd4 Nf7 22.Qc3 Nc5 23.Bxc5 bxc5
  ²  (0.33)   Depth: 8/23   00:00:00  161kN
19.Rc2 Bxe5 20.dxe5 Nd7 21.Bd4 Nf7 22.Qc3 g5 23.Nd3 Rac8
  ²  (0.38)   Depth: 9/23   00:00:01  368kN
19.Rc2 Nd7 20.Nc6 Rdc8 21.Rfc1 Kh8 22.Qa6 Qh4 23.Qb7 Bxf4 24.exf4
  ²  (0.35)   Depth: 10/27   00:00:01  1291kN
19.Rc2 Bxe5 20.dxe5 Nd7 21.Bd4 Nf7 22.Rc7 Rac8 23.Qc2 Nc5 24.Rxa7 Ne4
  ²  (0.38)   Depth: 11/28   00:00:04  3312kN
19.Rc2 Nf7 20.Nxf7 Kxf7 21.Re1 Kg8 22.Kh1 Nd7 23.Rc6 Nf8 24.g3 Rac8 25.Rec1 Rxc6
26.Rxc6 Bxf4 27.exf4
  ²  (0.31)   Depth: 12/38   00:00:12  10290kN
19.Rc2 Nf7 20.Nxf7 Kxf7 21.Rfc1 Bxf4 22.exf4 Qxf4 23.Qe2 Qd6 24.Rc7+ Kg8 25.Rc8
Kf7 26.R1c7+ Rd7 27.Rc2 Rd8
  ²  (0.31)   Depth: 13/38   00:00:19  17236kN
19.Rc2 Nd7 20.Nc6 Re8 21.Qa6 Nb8 22.Nxb8 Rexb8 23.Rfc1 Qh4 24.g3 Qh6 25.Rc8+
Rxc8 26.Rxc8+ Rxc8 27.Qxc8+ Bf8
  ²  (0.38)   Depth: 14/42   00:01:01  54012kN
19.Rc2 Nd7 20.Nc6 Re8 21.Qa6 Nb8 22.Nxb8 Rexb8 23.Rfc1 Qf6 24.Rc6 Rd8 25.a4 Qe7
26.Nd3 Qf6
  ²  (0.42)   Depth: 15/42   00:01:34  84167kN
19.Rc2 Nd7 20.Nc6 Re8 21.Qa6 Nb8 22.Nxb8 Rexb8 23.Rfc1 Qf6 24.Rc6 Rd8 25.a4 Qe7
26.Nd3 Qd7 27.Qb5
  ²  (0.46)   Depth: 16/44   00:03:11  171134kN
19.Rc2 Nd7 20.Qb5 Nf8 21.Rc6 Nf7 22.g3 Nxe5 23.dxe5 Be7 24.b4 Bg5 25.Rc7 Bxf4
26.exf4 Qh5 27.Kg2 Rac8 28.Rfc1 Rxc7 29.Rxc7
  ²  (0.45)   Depth: 17/50   00:09:48  523889kN
19.Rc2 Nd7 20.Qb5 Nf8 21.Rc6 Nf7 22.g3 Qg5 23.Nxf7 Kxf7 24.Qa6 Kg8 25.Re1 Qe7
26.Kh1 Nd7 27.Qb7 g5 28.Nh3
  ²  (0.47)   Depth: 18/50   00:18:15  958862kN
19.Rc2 Nd7 20.Qb5 Nf8 21.Rc6 Nf7 22.g3 Qf6 23.Kg2 Qe7 24.b4 Bxe5 25.dxe5 Rac8
26.Rfc1 Rxc6 27.Qxc6 g5 28.Nh5 Ng6 29.Nf6+ Kh8
  ²  (0.40)   Depth: 19/51   00:35:17  1852594kN
19.Rxd6 Rxd6 20.Qc3 Na6 21.b4 b5 22.a4 Rdd8 23.axb5 Rdc8 24.Nc6 Kh8 25.bxa6 e5
26.dxe5 Rxc6 27.Qd3 Rac8 28.Bd4 Rxa6 29.Qxf5
  ²  (0.70)   Depth: 19/57   00:43:18  2302916kN

(,  02.07.2005)


Uri



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