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Subject: Re: Odd blunder

Author: Albert Silver

Date: 18:54:09 11/29/04

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On November 29, 2004 at 17:41:07, Chessfun wrote:

>On November 29, 2004 at 17:36:54, Chessfun wrote:
>
>>On November 29, 2004 at 16:35:03, Albert Silver wrote:
>>
>>>
>>>>[Event "SSDF"]
>>>>[Site "SSDF"]
>>>>[Date "2004.11.28"]
>>>>[Round "28"]
>>>>[White "Chess Tiger 2004 A1200"]
>>>>[Black "Deep Fritz 8 A1200"]
>>>>[Result "0-1"]
>>>>[ECO "E19"]
>>>>[BlackElo "2790"]
>>>>[Annotator "Tony Hedlund"]
>>>>[PlyCount "149"]
>>>>[EventDate "2004.11.16"]
>>>>[TimeControl "40/7200:40/7200:40/7200"]
>>>>
>>>>{96MB, DFritz8.ctg, A1200} 1. d4 {[0:00:00]} Nf6 {[0:00:01]} 2. c4 {
>>>>[0:00:00]} e6 {[0:00:00]} 3. Nf3 {(g3) [0:00:00]} b6 {
>>>>[0:00:00]} 4. g3 {(a3) [0:00:00]} Bb7 {[0:00:00]} 5. Bg2 {
>>>>[0:00:00]} Be7 {[0:00:00]} 6. O-O {(Sc3) [0:00:00]} O-O {
>>>>[0:00:00]} 7. Nc3 {[0:00:00]} Ne4 {[0:00:00]} 8. Qc2 {
>>>>[0:00:00]} Nxc3 {[0:00:00]} 9. Qxc3 {[0:00:00]} c5 {
>>>>[0:00:00]} 10. b3 {(Td1) [0:00:00]} Bf6 {[0:00:00]} 11. Bb2 {
>>>>[0:00:01]} cxd4 {[0:00:00]} 12. Nxd4 {[0:00:00]} Bxg2 {
>>>>[0:00:00]} 13. Kxg2 {[0:00:00]} Nc6 {[0:00:00]} 14. Qe3 {
>>>>[0:00:00]} Qc8 {[0:00:00]} 15. Rfd1 {[0:06:05]} Rd8 {
>>>>[0:00:00]} 16. Rac1 {(Df3) [0:05:51]} d6 {[1,14] [0:06:34]
>>>>} 17. f3 {(De4) [0:04:20]} Ne7 {[-39,15] [0:05:49]} 18. Qd2 {
>>>>(De4) [0:03:43]} Qc5 {[-36,14] [0:04:27]} 19. e4 {
>>>>[0:06:29]} a6 {[-28,14] [0:02:25]} 20. Qe2 {(f4) [0:12:43]
>>>>} Ng6 {[-20,13] [0:04:09]} 21. f4 {[0:03:58]} Re8 {
>>>>[-5,15] [0:12:24]} 22. Rc2 {(Lc3) [0:03:44]} Ne7 {
>>>>[0,14] [0:13:35]} 23. Rcd2 {(a3) [0:05:36]} Rab8 {
>>>>[11,14] [0:13:11]} 24. Qg4 {(Df2) [0:03:45]} Kh8 {
>>>>[28,13] [0:06:03]} 25. Re2 {(f5) [0:03:31]} Ng6 {
>>>>[9,14] [0:05:51]} 26. Qf3 {(f5) [0:00:00]} Rbd8 {
>>>>[-3,14] [0:05:19]} 27. Red2 {(f5) [0:03:49]} Kg8 {
>>>>[0,13] [0:04:53]} 28. Qf2 {[0:00:00]} Qc8 {
>>>>[0,14] [0:04:03]} 29. Kf1 {(Sf3) [0:04:21]} Qb7 {
>>>>[-17,13] [0:04:38]} 30. Qe2 {(Df3) [0:01:01]} Qa8 {
>>>>[-9,13] [0:04:58]} 31. Qf3 {(b4) [0:08:57]} Qc8 {
>>>>[0,13] [0:04:46]} 32. a4 {(Df2) [0:04:13]} Qc5 {
>>>>[3,13] [0:06:21]} 33. Bc3 {[0:00:00]} h6 {
>>>>[5,12] [0:02:57]} 34. Ne2 {(a5) [0:11:02]} Bxc3 {
>>>>[29,12] [0:00:55]} 35. Nxc3 {[0:09:03]} Qb4 {
>>>>[32,15] [0:00:00]} 36. Na2 {(Se2) [0:02:40]} Qa3 {
>>>>[27,14] [0:01:36]} 37. Qc3 {[0:01:27]} Qc5 {
>>>>[25,14] [0:00:47]} 38. Nb4 {(e5) [0:03:02]} a5 {
>>>>[5,14] [0:01:32]} 39. Nc2 {[0:02:22]} Rd7 {
>>>>[14,14] [0:00:00]} 40. Nd4 {(De3) [0:08:21]} Ne7 {
>>>>[46,13] [0:02:19]} 41. Qf3 {[0:02:56]} Red8 {
>>>>[49,14] [0:00:24]} 42. Nb5 {(f5) [0:03:21]} Qc6 {
>>>>[44,15] [0:04:18]} 43. Kg2 {[0:02:21]} Qc5 {
>>>>[69,15] [0:04:56]} 44. h3 {[0:09:18]} Kh7 {
>>>>[59,15] [0:00:00]} 45. Rd3 {[0:02:23]} Kg8 {
>>>>[77,15] [0:03:23]} 46. Nc3 {(T1d2) [0:00:00]} Nc6 {
>>>>[48,15] [0:04:06]} 47. e5 {[0:04:15]} d5 {
>>>>[58,15] [0:00:00]} 48. cxd5 {[0:03:46]} Nb4 {
>>>>[51,16] [0:03:15]} 49. Ne4 {[0:00:57]} Qf8 {
>>>>[54,15] [0:02:07]} 50. d6 {(Td4) [0:06:12]} Nxd3 {
>>>>[33,17] [0:05:20]} 51. Qxd3 {(Txd3) [0:04:12]} Rc8 {
>>>>[39,15] [0:03:03]} 52. Kg1 {(g4) [0:01:19]} Rc6 {
>>>>[15,15] [0:02:58]} 53. Nd2 {(g4) [0:02:23]} Qa8 {
>>>>[0,16] [0:05:39]} 54. Nc4 {[0:19:21]} Rc5 {
>>>>[7,17] [0:00:00]} 55. Qe3 {[0:01:55]} Qc6 {
>>>>[27,15] [0:02:23]} 56. Kh2 {(g4) [0:02:08]} Rd8 {
>>>>[26,14] [0:03:14]} 57. Qf2 {(g4) [0:00:00]} Qb7 {
>>>>[0,15] [0:06:37]} 58. Rd2 {(Tf1) [0:03:18]} Qe4 {
>>>>[0,15] [0:05:19]} 59. Rd4 {(Td1) [0:02:34]} Qc6 {
>>>>[0,16] [0:02:32]} 60. Rd3 {(Td2) [0:02:38]} Qb7 {
>>>>[0,16] [0:14:36]} 61. Qe3 {(Td2) [0:02:01]} Rb8 {
>>>>[20,15] [0:05:26]} 62. Rd2 {(g4) [0:05:39]} Rd5 {
>>>>[0,15] [0:02:06]}
>>>
>>>I took a look at this game, and it seems to hinge entirely on this blunder at
>>>move 63.
>>>
>>>[D]1r4k1/1q3pp1/1p1Pp2p/p2rP3/P1N2P2/1P2Q1PP/3R3K/8 w - - 0 63
>>>
>>>Here Tiger 2004 played the very poor 63.Rc2?? allowing the rook infiltration in
>>>d1 and ultimately causing the loss of the game. I checked Tiger 15 and it never
>>>plays Rc2, which doesn't mean anything per se, but it's worth checking Tiger
>>>2004 to see if it does. I don't have the program so cannot do so myself.
>>>
>>>                                             Albert
>>
>>AMD XP 2600 ChessTiger 2004 normal 96 mb.
>>
>>00:00:00.0	1.46	1	34	Rxd5 exd5 Nd2
>>00:00:00.0	1.46	2	142	Rxd5 exd5 Nd2
>>00:00:00.0	1.44	3	1569	Rxd5 Qxd5 Qf2 Qd1 Qe3
>>00:00:00.0	1.26	4	5115	Rxd5 exd5 Nd2 Rc8 Qd4
>>00:00:00.0	1.20	5	13324	Rxd5 exd5 Nd2 Rc8 Qd3 Rc1 Qe3
>>00:00:00.0	1.24	5	23892	Rd3 Rc5 Qf3 Qxf3 Rxf3
>>00:00:00.0	1.30	6	43117	Rd3 Rc5 Qf3 Qxf3 Rxf3 g5 Rf2
>>00:00:00.1	1.20	7	76060	Rd3 Rc5 Qf3 Qxf3 Rxf3 Rd5 Kg2 f6 Ne3
>>00:00:00.3	1.00	8	216959	Rd3 Rc5 Qf2 Rd8 Rd2 Rd7 Qg2 Rc6 Qf2
>>00:00:00.3	1.20	8	240830	Rxd5 exd5 Nd2 Rc8 Qd3 Rc1 Qd4 Rc2 Qf2 Qc6
>>00:00:00.5	1.00	9	452228	Rxd5 exd5 Na3 Qc6 Nb5 Qc2+ Kg1 Qd1+ Kf2 Qh1 g4 Qh2+ Kf1
>>00:00:01.2	0.92	10	1193126	Rxd5 exd5 Nd2 Rc8 Qd3 Rc1 Qb5 Rc2 Qe2 Qd7
>>00:00:01.9	0.96	10	2093901	Qc3 Rc8 Rd3 Qc6 Qd2 f6 Rd4 fxe5 fxe5 Rc5 Qf4
>>00:00:03.1	0.76	11	3404933	Qc3 Rc8 Qb2 Rxd2+ Qxd2 Qf3 Nxb6 Rb8 Nc4 Qxb3 Nxa5
>>Qxa4 Qc3
>>00:00:03.4	0.80	11	3700021	Qe1 Rxd2+ Qxd2 Qe4 Qe3 Qc2+ Kg1 Qd1+ Kf2 Qh1 h4 Rc8
>>Qf3 Qh2+ Kf1
>>00:00:03.7	1.18	11	4007990	Rxd5 exd5 Na3 Qc6 Qd2 Rc8 Nb5 Qc2 Qxc2 Rxc2+ Kg1
>>00:00:04.4	1.18	12	4877210	Rxd5 exd5 Na3 Qc6 Qd2 Rc8 Nb5 Qc2 Qxc2 Rxc2+ Kg1 Rc1+
>>Kg2 Rc2+ Kf1 Rh2
>>00:00:05.5	1.02	13	6090070	Rxd5 exd5 Na3 Qc6 Qd2 Rc8 Nb5 Qc2 Qxc2 Rxc2+ Kg1 Rc1+
>>Kg2 Rc2+ Kf1 Rh2 h4
>>00:00:11.0	0.90	14	12352337	Rxd5 exd5 Na3 Qc6 Qd2 Rc8 Nb5 Qc2 Qxc2 Rxc2+ Kg1
>>Rc1+ Kg2 Rc2+ Kf1 Rc1+ Kf2 Rc2+ Kf1 Rc1+ Kf2 Rc2+ Kf1
>>00:00:37.6	0.62	15	42779933	Rxd5 Qxd5 Qc3 b5 Ne3 Qf3 axb5 Qe2+ Ng2 Qxb5 Qc7 Qb4
>>d7 Qf8 Qxa5
>>00:01:44.4	0.54	16	118307041	Rxd5 Qxd5 Qd2 Qxd2+ Nxd2 b5 Ne4 bxa4 bxa4 Rb2+ Kg1
>>Rb4 Nc3 Rc4 Ne2 Rb4 Kf2
>>00:03:56.9	0.34	17	277591467	Rxd5 Qxd5 Qd2 Qxd2+ Nxd2 b5 Ne4 bxa4 bxa4 Rb2+ Kg1
>>Rb4 Nc5 Rc4 Nb7
>>
>>I let it carry on for depth 18 but after 15 minutes nothing, since in the game a
>>1200 mhz was used and took 7 odd minutes the depth posted should be about right.
>
>Here is depth 18.
>
>00:23:23.5	0.30	18	1648199053	Rxd5 Qxd5 Qd2 Qxd2+ Nxd2 b5 Ne4 bxa4 bxa4 Rb2+ Kg1
>Rb4 Nc5 Rc4 Na6
>
>Sarah.

The only other test I'd make would be to leave it with the pondering on, and
have it play the 62.Rd2 then after some time, with it pondering, play Fritz's
62...Rd5 and see if the hash tables (the SSDF use 128 MB) still have it play
63.Rxd5 as shown in your analysis.

                                            Albert



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