Author: Jeremiah Penery
Date: 00:03:43 02/18/01
Go up one level in this thread
On February 18, 2001 at 01:22:38, Tanya Deborah wrote:
>
>
>
>Hi to all,
>
>This is a beautiful game by the Great Master Leonid Stein.
>I am interested to know, How many programs can avoid the fatal mistake 21.Qxh1?
>
>Deep Fritz can avoid that!!!, Deep Fritz can see that Qxb3 is better than Qxh1.
> Junior6 and Hiarcs7.32 and Fritz6 can´t avoid that...
>
>The position is very interesting, in this kind of position you can see some
>computer weak points, (the machines sometimes have so much appetite, and can´t
>see the great atack by White after move 21.
>
>Another question? Which program can find 12.Qb3! ???? (with a winning endgame)
>- because after change Queens, White is much better. I think there are no
>program that can find this move.
>
>Please look this game, and post your results here.
>
>I will like to know what think Gambit Tiger, Rebel, Shredder, Crafty, Gandalf
>and other strong programs.
>
>
>
>[Event "Moscu, 1966 -Spartakiada"]
>[Date "1966.02.17"]
>[Round "?"]
>[White "Stein, Leonid"]
>[Black "Birbrager Isaak"]
>[Result "1-0"]
>[ECO "B10"]
>[PlyCount "43"]
>[EventDate "2001.02.17"]
>
>1. e4 c6 2. d3 d5 3. Nd2 dxe4 4. dxe4 Nf6 5. Ngf3 Bg4 6. h3 Bh5 7. e5 Nd5 8. e6
>f6 9. g4 Bg6 10. Nd4 Nc7 11. c3 Qd5 12. Qb3 12... Qxh1 $4 {A big mistake!,
>Black should have change Queens. (Dxb3). Now with this Rook sacrifice, White
>is winning! -(Stein.)}
This is what I get from modified Crafty 18.1 with SE:
8-> 33.34 -1.17 12. ... Qxh1 13. Qxb7 Kd8 14. f3 Qh2
15. Kd1 Be8 16. Nf5 g6 17. Nh4 <HT>
9 1:42 -- 12. ... Qxh1
9 1:55 -0.96 12. ... Qxh1 13. Qxb7 Kd8 14. Nb5 Nxb5
15. Qxa8 Kc8 16. a4 Nc7 17. Qxa7 Nxe6
18. Nc4 Nd7 19. f4 Bd3 20. Qa8+ Kc7
21. Qa7+ Kd8 22. Qf2 <HT>
9-> 1:59 -0.96 12. ... Qxh1 13. Qxb7 Kd8 14. Nb5 Nxb5
15. Qxa8 Kc8 16. a4 Nc7 17. Qxa7 Nxe6
18. Nc4 Nd7 19. f4 Bd3 20. Qa8+ Kc7
21. Qa7+ Kd8 22. Qf2 <HT>
10 2:34 -- 12. ... Qxh1
10 3:03 -0.68 12. ... Qxh1 13. Qxb7 Kd8 14. Nb5 Nxb5
15. Qxa8 Kc8 16. a4 Nc7 17. Qxa7 Bd3
18. Qe3 Bxf1 19. Nxf1 Qd5 20. Ra3 Nxe6
21. Qa7 Ng5 <HT>
10-> 3:13 -0.68 12. ... Qxh1 13. Qxb7 Kd8 14. Nb5 Nxb5
15. Qxa8 Kc8 16. a4 Nc7 17. Qxa7 Bd3
18. Qe3 Bxf1 19. Nxf1 Qd5 20. Ra3 Nxe6
21. Qa7 Ng5 <HT>
11 4:51 -- 12. ... Qxh1
11 6:04 0.00 12. ... Qxh1 13. Qxb7 Kd8 14. N2f3
Bd3 15. Bf4 Qxf1+ 16. Kd2 Qxf2+ 17.
Kxd3 Nba6 18. Qxc6 Kc8 19. Qd7+ Kb7
20. Qc6+ Kb8 21. Qe8+ Kb7 22. Qc6+
<HT>
11-> 6:50 0.00 12. ... Qxh1 13. Qxb7 Kd8 14. N2f3
Bd3 15. Bf4 Qxf1+ 16. Kd2 Qxf2+ 17.
Kxd3 Nba6 18. Qxc6 Kc8 19. Qd7+ Kb7
20. Qc6+ Kb8 21. Qe8+ Kb7 22. Qc6+
<HT>
In other words, it sees only a draw.
> 13. Qxb7 13... Kd8 {
>A very dramatic and obligatory King move! - Black position is hopeless!} 14.
>N2f3 Bd3 15. Bf4 $1 {A very fine move!} 15... Qxf1+ 16. Kd2 Qxf2+ 17. Kxd3 {
>Black is lost
The line of Crafty agreed with the analysis until here. I think white can only
get a draw after Nba6 instead of Nxe6 in this position.
[D]rn1k1b1r/pQn1p1pp/2p1Pp2/8/3N1BP1/2PK1N1P/PP3q2/R7 b - -
After Nxe6 is played, Crafty sees the mate instantly:
4-> 0.37 1.49 17. ... Nxe6 18. Nxe6+ Ke8 19. Nfd4
Kf7 20. Qxa8 Qxb2 21. Bxb8 <HT>
5 0.46 -- 17. ... Nxe6
5 0.69 Mat05 17. ... Nxe6 18. Nxe6+ Ke8 19. Qc8+
Kf7 20. Neg5+ fxg5 21. Nxg5+ Kf6 22.
Qe6# <HT>
What is the relevant line after 17. ...Nba6 for White to win?
>} 17... Nxe6 18. Nxe6+ Ke8 19. Qc8+ Kf7 20. Nfg5+ fxg5 21. Nxg5+
>Kf6 22. Qe6# {A beautiful mate !!} 1-0
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