Author: Roy Eassa
Date: 12:31:06 04/01/02
Go up one level in this thread
On April 01, 2002 at 14:15:21, Terry McCracken wrote:
>On April 01, 2002 at 12:23:31, Roy Eassa wrote:
>
>>On March 31, 2002 at 20:51:20, Terry McCracken wrote:
>>
>>>On March 31, 2002 at 19:19:52, Will Singleton wrote:
>>>
>>>>On March 31, 2002 at 18:43:08, K. Burcham wrote:
>>>>
>>>>>
>>>>>here GM Spassky played 15.Nd6
>>>>>
>>>>> [D] r1bqr1k1/pppnbpp1/7p/2P5/3PN3/3Q1N2/PPB1p1PP/R4RK1 w - - 0 15
>>>>>
>>>>>[Site "Leningrad ch-SU"]
>>>>>[Date "1960.??.??"]
>>>>>[Round "16"]
>>>>>[White "Spassky B V"]
>>>>>[Black "Bronstein,David"]
>>>>>[Result "1-0"]
>>>>>[ECO "C36"]
>>>>>
>>>>>1. e4 e5 2. f4 exf4 3. Nf3 d5 4. exd5 Bd6 5. Nc3 Ne7 6. d4 O-O 7. Bd3
>>>>>Nd7 8. O-O h6 9. Ne4 Nxd5 10. c4 Ne3 11. Bxe3 fxe3 12. c5 Be7 13. Bc2
>>>>>Re8 14. Qd3 e2 15. Nd6 Nf8 16. Nxf7 exf1=Q+ 17. Rxf1 Bf5 18. Qxf5 Qd7
>>>>>19. Qf4 Bf6 20. N3e5 Qe7 21. Bb3 Bxe5 22. Nxe5+ Kh7 23. Qe4+
>>>>> 1-0
>>>>>
>>>>>(must put settings on: mate in 25 or less, favour sacs, white rook value=1,
>>>>> black king=5x default, white Night =.5) just kidding, but this is tough
>>>>>for most programs.
>>>>>
>>>>>kburcham
>>>>
>>>>Hmmm, what happens after 15... exf1=Q+ Rxf1 Bxd6 Qh7+ etc?
>>>>
>>>>Will
>>>
>>>15.Nd6!? was a "Trap", it didn't "Force" a win or lose, but after Nf8?? White of
>>>course wins easily:)
>>>
>>>The famous Bluebird game. This game also appears in a James Bond Movie; From
>>>Russia with Love.
>>>
>>
>>
>>Very interesting! However, that doesn't answer the question of how White even
>>survives after 1.Nd6?! exf1Q+ 2.Rxf1 Bxd6 3.Qh7+ Kf8
>
>I was lazy, I let Shredder Paderborn look at this position:)
>
>It could go like this which would draw by perpetual check. Main Line?
>
>1. Nd6 {4s} exf1=Q+ {4s} 2. Rxf1 {1s} Bxd6 {19s} 3. Qh7+
>{49s} Kf8 {4s} 4. cxd6 {6s} cxd6 {4s} 5. Qh8+ {10s} Ke7
>{4s} 6. Re1+ {4s} Ne5 {4s} 7. Qxg7 {12s} Rg8 {3s} 8. Qxh6
>{9s} Qb6 {1:39m} 9. Kh1 {3s} Be6 {3:23m} 10. dxe5 {1s} d5
>{2:16m} 11. Ba4 {1:01m} Qf2 {55s} 12. Qf6+ {33s} Kf8 {7s}
>13. Qh6+ {52s} Ke7 {6s} 14. Qf6+ {5s} Kf8 {15s} 15. Qh6+
>{6s} Ke7 {4s} *
Incorporating your input, I get the following (still hoping for improvements for
White in the main lines):
1.Nd6?! exf1Q+ 2.Rxf1 Bxd6 3.Qh7+ Kf8 4.cxd6
[4.Qh8+ Ke7 5.Re1+ Ne5 (5...Be5 6.Qxg7 Rg8 7.Nxe5 Nxe5 (7...Rxg7? 8.Ng6+ Kf6
9.Rf1+ Kg5 10.h4+ Kh5 11.g4+ Kxg4 12.Bd1+ Kg3 13.Rf3+ Kg4 14.Rf2+ Kh3 15.Rh2+
Kg3 16.Rg2+ Kh3 17.Bg4#) 8.Rxe5+ Be6 9.Rxe6+! Kd7 (9...Kxe6? 10.Qe5+ Kd7 11.Bf5+
Kc6 12.Be4+ Kd7 13.c6+ Kc8 14.cxb7+ Kd7 15.Bf5+ Kc6 16.Qc5+ Kxb7 17.Qb5#)
10.Qxf7+ Kc8 11.d5 Rf8 12.Qg7 Rg8 13.Qe5+-; 6.Qxg7 (6.cxd6+ cxd6 7.Qxg7 unclear)
6...Kd7 (6...Be6 7.cxd6+ cxd6 8.dxe5 Rg8 unclear; 6...Rg8 7.Qxh6 Be6 8.cxd6+
cxd6 unclear) 7.Nxe5+ Rxe5 (7...Bxe5? 8.Qxf7+ Qe7 9.Qd5+ Bd6 10.Ba4+ c6 11.Rxe7+
+-) 8.dxe5 Bxc5+ 9.Kh1 Qe7 (9...Kc6 10.Qxf7 Qd2 11.Qg6+ Kb5 12.Rd1 =) 10.Rf1 Kc6
11.Rxf7 Qg5 12.Rxc7+ Kb6 13.Qxg5 hxg5 14.Rg7 Bd4 (14...Be3 15.Rg8 Kc5 16.Bf5
Bxf5 17.Rxa8 Kd5 -/+) 15.Rxg5 Bd7 -/+]
4...cxd6
[4...Nf6? 5.Qh8+ Ng8 6.Ne5! (6.Bh7? Qxd6 7.Qxg8+ Ke7 -/+) 6...f6 (6...Bf5 7.Bxf5
Qxd6 8.Ng6+ fxg6 9.Bxg6+ +-) 7.Bh7 Be6 8.d7! Ke7 (8...Re7? 9.Bxg8 Bxg8 10.Rxf6+
gxf6 11.Qxf6+ Bf7 12.Ng6+ Kg8 13.Qh8#) 9.dxe8Q+ Qxe8 10.Qxg7+ Kd6 11.Bxg8 Qxg8
12.Qxf6 +-]
5.Qh8+ Ke7 6.Re1+ Ne5 7.Qxg7 Be6
[7...Rg8 8.Qxh6 Qb6 9.Kh1 Be6 10.dxe5 d5 (10...dxe5 11.Qh4+ Kd6? (11...Kf8
12.Ng5! +=) 12.Nxe5 Qxb2 13.Nxf7+ Bxf7 14.Qe7+ +-; 11.Ba4 Qf2 12.Qf6+ Kf8
13.Qh6+ =]
8.dxe5 dxe5 9.Kh1 Qb6
[9...Qc7 10.Bb3 Rg8 11.Qxh6 Bxb3 12.axb3 Qc2 13.Qh4+ Kd7 14.Nxe5+ Kc8 15.Rg1 b5
16.Qf6 Rd8 17.Qa6+ Kc7 18.Qxb5 +=;
9...Qd6 10.Nxe5 Rg8 (10...Qd2 11.Nf3 Qf4 12.Bb3 =) 11.Qxh6 = Qb4 (11...Qd4
12.Nxf7 Qg4 13.Ng5 Rxg5 14.Rxe6+ Kd7 15.Rd6+ Kc7 16.Rd2 Qf4 17.Qh7+ Kb6 18.Qd3
a6 =) 12.Re2 Rac8 13.Bb3 Qb6 14.Qh4+ Kf8 15.Nd7+ Bxd7 16.Qe7+ Kg7 17.Qxf7+ Kh6
18.Qf4+ Kh7 19.Bxg8+ Kxg8 20.Qg5+ Kh8 21.Qh5+ =]
10.Qxe5 Rg8
[10...Qd6 11.Qe3 Rac8 12.Bb3 Rc7 13.Qxh6 Qb6 14.Qh4+ Kd7 15.Ba4+ Rc6 16.Ne5+ +-]
11.Nd4 Rad8 12.Nf5+ Kf8 13.Nxh6 Rg7
[13...Rd5 14.Qb8+ Rd8 15.Qe5 =]
14.Nf5 Rh7
[14...Bxf5 15.Qe7+ Kg8 16.Bxf5 Rf8 17.Qe2 Qc5 unclear]
15.Rf1 Bxf5 16.Qxf5 Rg7 17.Bb3 Qc6 18.Qf2 Rd7 =+
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