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Subject: Re: A nice saving move from Arasan

Author: José Carlos

Date: 04:44:31 10/26/01

Go up one level in this thread


On October 25, 2001 at 19:34:23, Slater Wold wrote:

>On October 25, 2001 at 18:39:50, Andrew Williams wrote:
>
>>Hi,
>>
>>PM (Athlon 1.2GHz) just played out this draw with ArasanX (Athlon 1.3GHz)
>>on ICC:
>>
>>[Event "ICS rated blitz match"]
>>[Site "204.178.125.65"]
>>[Date "2001.10.25"]
>>[Round "-"]
>>[White "PostModernist"]
>>[Black "ArasanX"]
>>[Result "1/2-1/2"]
>>[WhiteElo "2771"]
>>[BlackElo "2619"]
>>[TimeControl "600+2"]
>>
>>1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Bb4 5. g3 dxc4 6. Bg2 c5 7. O-O Bxc3 8.
>>bxc3 cxd4 9. Ne5 O-O 10. Ba3 Re8 11. cxd4 c3 12. Rc1 Qa5 13. Qb3 Nbd7 14.
>>Nc4 Qa6 15. Nd6 Rd8 16. Nxc8 Raxc8 17. Bxb7 Qxe2 18. Bxc8 Rxc8 19. Rxc3
>>Rxc3 20. Qxc3 g6 21. Qb2 Qd3 22. Rc1 Nd5 23. Bc5 a5 24. a4 Kg7 25. h4 Kf6
>>26. Bd6 N7b6 27. Rc6 Nc4 28. Be5+ Nxe5 29. dxe5+ Kg7 30. Qb5 Qe4 31. Kh2
>>Nf4 32. gxf4 Qxf4+ 33. Kg1 Qg4+ 34. Kf1 Qd1+ 35. Kg2 Qg4+ 36. Kf1 Qd1+ 37.
>>Kg2 Qg4+ 38. Kh1 Qf3+ 39. Kg1 Qg4+ 40. Kh2 Qf4+ 41. Kh3 Qf3+ 42. Kh2 Qf4+
>>43. Kh3
>>{Game drawn by repetition} 1/2-1/2
>>
>>
>>Arasan found a nice saving move with 31...Nf4. My program takes 15 seconds
>>to find this, but doesn't return a draw score after ten minutes. Arasan
>>moved in 15 seconds. How long does it take your program?
>>
>>[D]8/5pkp/2R1p1p1/pQ1nP3/P3q2P/6P1/5P1K/8 b - - 0 31 bm Nf4
>>
>>Cheers
>>
>>Andrew
>
>31...Nf4 is *not* brillant.  32. gxf4 is a blunder.
[snip]

  Please, don't confuse brilliant with best move. A spectacular move that gives
practical chances is generally considered brilliant. Even a blunder can be
brilliant. For example, your opponent is a piece up but he's got very little
time. You find a very complicated move that is a mate in 5 for your opponent if
he can see it but the position goes crazy and you manage to mess things up. In
that case, you made a brilliant decision.
  On the other hand, my program likes Nf4 very soon (2 seconds), but it doesn't
want to take the knight:

Averno v0.33 alfa 6
(c) 1999-2001 Jose Carlos Martinez Galan


go
Tiempo esperado: 249999999.975000

Prof	Eval	Tiempo	  Nodos   PV
----	----	------	--------- ------
1	-2.78	0.02	      46  e4e5
1	-2.52	0.02	      92  d5b4!
1	-2.13	0.02	     101  d5b4!
1	-2.13	0.02	     101  d5b4
1	-2.08	0.02	     195  e4e1!
1	-2.08	0.02	     195  e4e1
1	-2.08	0.02	     215--e4e1
2	-2.08	0.02	     292  e4e1 f2f4
2	-2.08	0.03	     796--e4e1 f2f4
3	-2.08	0.03	    1168  e4e1 f2f4 h7h5
3	-2.08	0.03	    2375--e4e1 f2f4 h7h5
4	-2.08	0.04	    3844  e4e1 f2f4 e1f2 h2h3
4	-2.08	0.05	    8163--e4e1 f2f4 e1f2 h2h3
5	-2.09	0.07	   13759  e4e1 f2f4 d5b4 c6c8 e1f2
5	-2.08	0.13	   37975  e4f3!
5	-2.08	0.13	   37975  e4f3 b5c5 f3e2 c6c8 e1f2
5	-2.08	0.13	   38832--e4f3 b5c5 f3e2 c6c8 -
6	-2.53	0.17	   56191  e4f3 b5c5 d5f4 g3f4 f3f4 h2g2
6	-2.27	0.19	   61739  e4e1!
6	-2.08	0.30	  104684  e4e1!
6	-2.08	0.30	  104684  e4e1 c6c2 h7h6 f2f3 e1d1 c2c8
6	-2.08	0.43	  159778--e4e1 c6c2 h7h6 f2f3 e1d1 c2c8
7	-2.08	0.57	  213086  e4e1 c6c2 g7h6 f2f3 e1d1 c2c8 d1e1
7	-2.06	0.73	  278509  e4f3!
7	-2.06	0.73	  278509  e4f3 c6c2 d5f4 b5f1 f4d3 f1e2 f3e2
7	-2.06	1.05	  408306--e4f3 c6c2 d5f4 b5f1 f4d3 f1e2 f3e2
8	-2.06	1.20	  472733  e4f3 c6c2 d5f4 b5f1 f4d3 f1e2 f3e2 c2e2
8	-1.91	2.78	 1126017  d5f4!
8	-1.91	2.78	 1126017  d5f4 g3f4 e4f4 h2h1 f4f2 h4h5 g6h5 c6a6
8	-1.91	3.20	 1300447--d5f4 g3f4 e4f4 h2h1 f4f2 h4h5 g6h5 c6a6
9	-1.66	3.68	 1475038  d5f4!
9	-1.42	4.21	 1698379  d5f4 f2f3 e4f3 g3f4 f3f2 h2h1
9	-1.42	5.20	 2138820--d5f4 f2f3 e4f3 g3f4 f3f2 h2h1 -
10	-1.40	5.87	 2437182  d5f4 f2f3 e4f3 g3f4 f3f4 h2g2
10	-1.40	7.74	 3327489--d5f4 f2f3 e4f3 g3f4 f3f4 h2g2 -
11	-1.23	9.70	 4141679  d5f4 f2f3 e4f3 g3f4 f3f2 h2h1 f2h4 h1g1
                                  h4g3 g1f1 g3f4
11	-1.23	17.38	 7515166--d5f4 f2f3 e4f3 g3f4 f3f2 h2h1 f2h4 h1g1
                                  h4g3 g1f1 g3f4
12	-1.16	23.07	 9852788  d5f4 f2f3 e4f3 g3f4 f3f2 h2h1 f2h4 h1g1
                                  h4g3 g1f1 g3f4 f1g2
12	-1.16	148.23	57431651--d5f4 f2f3 e4f3 g3f4 f3f2 h2h1 f2h4 h1g1
                                  h4g3 g1f1 g3f4 f1g2
13	-1.15	160.28	62530840  d5f4 f2f3 e4f3 g3f4 f3f2 h2h1 f2h4 h1g1
                                  h4g3 g1f1 g3f4 f1g2 f4e4
13	-1.15	218.33	87898726--d5f4 f2f3 e4f3 g3f4 f3f2 h2h1 f2h4 h1g1
                                  h4g3 g1f1 g3f4 f1g2 f4e4
14	-1.08	234.61	95111023  d5f4 f2f3 e4f3 g3f4 f3f2 h2h1 f2h4 h1g1
                                  h4g3 g1f1 g3f4 f1e1 f4e4 e1d2
14	-1.08	303.21	126259900--d5f4 f2f3 e4f3 g3f4 f3f2 h2h1 f2h4 h1g1
                                   h4g3 g1f1 g3f4 f1e1 f4e4 e1d2

;Mi jugada (26) es: d5f4;
Tiempo restante: 9999999635.92
Totales: Visitados: 154700015   Nulos: 14464493   Cortes Nulos: 6728415
Hash exactos: 1464   UBounds: 1614338   LBounds: 10268199   Fallos: 227635358
Hash grabaciones: 35789756 (100%)  No grabaciones: 21260892
Extensiones: Jaque: 10378295  Recaptura: 1076786  Null: 83673  Peon_7: 107823
Cortes Beta: 21305351  Cortes Beta Primera: 18790548  (88%)  Podas Futility:
13431256
Por segundo: Visitados: 426056




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