Author: Daniel Jackson
Date: 14:43:31 09/24/04
Go up one level in this thread
On September 24, 2004 at 16:16:15, Cliff Sears wrote:
>On September 24, 2004 at 15:51:49, Daniel Jackson wrote:
>
>>On September 23, 2004 at 21:23:32, John Merlino wrote:
>>
>>>On September 23, 2004 at 21:10:07, Roy Brunjes wrote:
>>>
>>>>On September 23, 2004 at 20:57:15, Daniel Jackson wrote:
>>>>
>>>>>On September 23, 2004 at 20:16:05, Cliff Sears wrote:
>>>>>
>>>>>>The move played was Qxf3
>>>>>>
>>>>>>Analysis from "The World's Greatest Chess Games" says Rg4 is best. What does
>>>>>>your engine say?
>>>>>>
>>>>>>[d] 1r2k1r1/pbppnp1p/1bn2P2/7q/Q7/B1PB1N2/P4PPP/3RR1K1 b - - 0 19
>>>>>>
>>>>>>[Event "GCG_003"]
>>>>>>[Site "Berlin"]
>>>>>>[Date "1852.??.??"]
>>>>>>[Round "?"]
>>>>>>[White "Anderssen, A."]
>>>>>>[Black "Dufresne, J."]
>>>>>>[Result "1-0"]
>>>>>>[ECO "C52"]
>>>>>>[WhiteElo "2600"]
>>>>>>[BlackElo "2370"]
>>>>>>[Annotator "Fritz 5.00 (5s)"]
>>>>>>[PlyCount "47"]
>>>>>>[EventDate "1852.??.??"]
>>>>>>
>>>>>>1. e4 e5 {Opening = C52 - Evans Gambit-Hauptvariante /Evans Gambit-main line}
>>>>>>2. Nf3 Nc6 3. Bc4 Bc5 4. b4 Bxb4 5. c3 Ba5 6. d4 exd4 7. O-O d3 8. Qb3 Qf6 {
>>>>>>Exerts pressure on the isolated pawn} 9. e5 Qg6 10. Re1 Nge7 11. Ba3 $146 (11.
>>>>>>Nbd2 O-O 12. Ne4 d2 13. Bxd2 d5 14. exd6 cxd6 15. Bd3 Qe6 16. Qc2 Qd7 17. Bf4
>>>>>>Bc7 18. Rad1 Ng6 19. Bg3 d5 20. Nc5 Qd8 21. Bxg6 hxg6 22. Bh4 Bxh2+ 23. Kh1 Qd6
>>>>>>24. Ne4 Qa3 25. Rxd5 Bc7 26. Qd2 Be6 27. Nf6+ Kh8 28. Rxe6 fxe6 29. Rd7 Rad8
>>>>>>30. Qh6+ {1-0 Losev,D-Kadimova,I/Moscow op Russian Winter 1991/TD 91\03}) 11...
>>>>>>b5 $15 (11... d5 $142 $5 12. exd6 cxd6 $17) 12. Qxb5 Rb8 13. Qa4 Bb6 14. Nbd2
>>>>>>Bb7 15. Ne4 Qf5 (15... Nd4 16. Nfg5 Ne6 17. Bxd3 $11) 16. Bxd3 Qh5 (16... Nxe5
>>>>>>$4 17. Nd6+ cxd6 18. Bxf5 $18) 17. Nf6+ $15 (17. Rab1 $142 $5 $11) 17... gxf6
>>>>>>18. exf6 Rg8 19. Rad1 $4 $19 (19. Kf1 Rxg2 20. Kxg2 $19) 19... Qxf3 {
>>>>>>Do you see the mate threat?} 20. Rxe7+ Nxe7 $4 (20... Kd8 21. Rxd7+ $1 Kc8 22.
>>>>>>Rd8+ Kxd8 23. Be2+ Nd4 24. Bxf3 Bxf3 $14) 21. Qxd7+ $3 Kxd7 22. Bf5+ Ke8 23.
>>>>>>Bd7+ Kf8 (23... Kd8 24. fxe7#) 24. Bxe7# 1-0
>>>>>
>>>>>I'll analyse this further....but Rg4 will stop the slaughter....Qh3! is also far
>>>>>better than Qxf3??
>>>>
>>>>
>>>>CM9000 custom personality says ...Bd4 is best with 0.00 eval after 10 mins on
>>>>1.5 GHz Athlon XP. Is that accurate? Let the debates begin!
>>>>
>>>>Roy
>>>
>>>Confirmed with CM9_SKR on an AMD 2500 -- Bd4 gets a -0.04 score in Black's
>>>favor:
>>>
>>>Time Depth Score Positions Moves
>>>0:00 1/3 -6.95 4766 19...Qxf3 20.Be4 Qxf2+ 21.Kh1 Ne5
>>> 22.Bxb7 Rxb7
>>>0:00 1/4 1.41 34811 19...Qxf3 20.Rxe7+ Kd8 21.Rxd7+
>>> Kc8 22.Rd8+ Kxd8 23.Be2+ Nd4 24.Bxf3
>>> Bxf3 25.cxd4 Bxd1 26.Qxd1
>>>0:00 1/4 -0.90 35802 19...Rxg2+ 20.Kxg2 Ne5 21.Be4 Qg4+
>>> 22.Kh1 Nxf3 23.fxe7 Nxe1 24.Rxe1
>>> Bxf2
>>>0:00 1/4 -1.53 40425 19...Ne5 20.Rxe5 Rxg2+ 21.Kf1 Rxf2+
>>> 22.Ke1 Qxf3 23.Rxe7+ Kf8
>>>0:00 1/5 1.09 83607 19...Ne5 20.Rxe5 Rxg2+ 21.Kf1 Rxf2+
>>> 22.Ke1 Bxf3 23.Rxh5 Bxh5 24.fxe7
>>> Bxd1 25.Kxd1 Rxh2
>>>0:00 1/5 0.93 99920 19...Qxf3 20.Rxe7+ Kd8 21.Rxd7+
>>> Kc8 22.Rd8+ Kxd8 23.Be2+ Nd4 24.Bxf3
>>> Bxf3 25.Rxd4+ Bxd4 26.Qxd4+ Kc8
>>>0:00 1/5 -0.40 136151 19...Rg4 20.Bc4 Qf5 21.Kf1 Rxc4
>>> 22.Qxc4 Qxf6
>>>0:00 1/5 -0.56 169638 19...Qh3 20.Bf1 Qf5 21.Bd3 Qxf6
>>> 22.Bxh7
>>>0:01 1/5 -0.59 201005 19...Rxg2+ 20.Kxg2 Ne5 21.Qxd7+
>>> Nxd7 22.Rxe7+ Kd8 23.Rxd7+ Kc8
>>> 24.Be2
>>>0:01 1/5 -0.99 256935 19...Bd4 20.Nxd4 Rxg2+ 21.Kxg2
>>> Nxd4+ 22.Re4 Bxe4+ 23.Bxe4
>>>0:01 1/6 -0.32 366962 19...Bd4 20.cxd4 Qxf3 21.Be4 Rxg2+
>>> 22.Kh1 Rxh2+ 23.Kxh2 Qxf2+ 24.Kh1
>>>0:05 1/7 -0.17 1316881 19...Bd4 20.cxd4 Qxf3 21.Be4 Qxf6
>>> 22.Rb1 Qxd4 23.Qxd4 Nxd4 24.Rxb7
>>> Rxb7 25.Bxb7
>>>0:07 1/7 -0.20 1574857 19...Qh3 20.Bf1 Qf5 21.Bd3 Qxf6
>>> 22.Bxh7 Rh8 23.Bxe7 Nxe7 24.Rxd7
>>> Rxh7 25.Rdxe7+ Kf8
>>>0:16 1/8 -0.11 3770828 19...Qh3 20.Bf1 Qf5 21.Bd3 Qxf6
>>> 22.Bxh7 Rh8 23.Qg4 d6
>>>0:19 1/8 -0.37 4557537 19...Bd4 20.cxd4 Qxf3 21.Be4 Rxg2+
>>> 22.Kh1 Rxh2+ 23.Kxh2 Qxf2+ 24.Kh1
>>> Qxf6 25.Qc2
>>>0:34 1/9 -0.30 8657595 19...Bd4 20.cxd4 Qxf3 21.Be4 Rxg2+
>>> 22.Kh1 Rxh2+ 23.Kxh2 Qxf2+ 24.Kh1
>>> Qxf6 25.Bg2 Qh4+ 26.Kg1 f5
>>>1:22 1/10 -0.26 21540482 19...Bd4 20.cxd4 Qxf3 21.Be4 Rxg2+
>>> 22.Kh1 Rxh2+ 23.Kxh2 Qxf2+ 24.Kh1
>>> Qxf6 25.Qc2 Kf8 26.Qh2 d6
>>>4:35 1/11 -0.04 74470403 19...Bd4 20.Bf1 Bxf6 21.Qf4 Qa5
>>> 22.Qxf6 Qxa3 23.Bc4 Kd8 24.Bxf7
>>> Rf8 25.Qg7
>>>
>>>jm
>>
>>Try 19. Qh3! and see what Chessmaster has to say....
>
>I had Crafy, Hiarcs 7.32 and Anaconda 1.6 testing out this position. Hiarcs and
>Crafy suggested Qh3. Anaconda suggested the Qxf3? move. None came up with either
>Bd4 or the suggested Rg4.
The Best Move for a quick draw is 19.Qh3!, Rg4!? may not hold and there are
still some dangers after Bd4 although it's drawing.
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