Author: Daniel Jackson
Date: 12:51:49 09/24/04
Go up one level in this thread
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....
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