Computer Chess Club Archives


Search

Terms

Messages

Subject: Re: Perhaps the ultimate materialism test position:Can programs avoid Nxa8?

Author: Omid David Tabibi

Date: 05:39:25 03/15/03

Go up one level in this thread


On March 14, 2003 at 21:33:25, ALI MIRAFZALI wrote:

>The following astonishing position is taken from the game Atalik vs Gufeld
>Losangeles 2000:
>[D]r1b2rk1/1pNnq1b1/1B1p2n1/P2Pp2p/4Pp2/5Pp1/1P2B1PP/R2QNRK1 w
>Here Atalik played 21.h3 .In fact incorrect would be 21.Nxa8? However the
>analysis of why is very difficult and Complicated.

This is my analysis (take it with a grain of salt as I haven't checked it with
computers):

1. Nxa8 Nxb6 2. Nxb6 Qh4 3. h3 Bxh3 4. gxh3 Qxh3 5. Rf2 gxf2+ 6. Kxf2 Qg3+
7. Kf1 h4 8. Bb5 h3 9. Ke2 Nh4 10. Nc2 Qxf3+ 11. Kd2 Qxe4

[D] 5rk1/1p4b1/1N1p4/PB1Pp3/4qp1n/7p/1PNK4/R2Q4 w - - 0 12
and black should easily win.




>Here are two sample lines
>given by Gufeld  A)21.Nxa8 Nxb6 22.Nxb6 Qh4 23.h3 Bxh3 24.gxh3 Qxh3 25.Rf2 gxf2
>26.Kxf2 Qh2+ 27.Ng2 Nh4 28.Qh1 Qg3+ 29.Kf1 Nxf3 30.Bxf3 Qxf3+ 31.Kg1 Qxe4
>32.Qh4 Qd4+ 33.Qf2 e4 34.Ra4 Qd1+ 35.Qe1 Qxe1+ 36.Nxe1 f3 37.Nc2 Rf4
>B) same as A) until 28: 28.Qf1 Rf6 29.Nc8 Bf8 30.Qh1 Qg3+ 31.Kf1 Nxf3 32.Rd1 Rg6
>All with advantage to Black.

This is from the kind of positions each King's Indian player should be familiar
with. Let me guess, did the position arise from the moves:

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 O-O 6. Be2 e5 7. O-O Nc6 8.
d5 Ne7 9. Ne1 Nd7 10. Be3 f5 11. f3 f4 12. Bf2 g5 13. a4 Ng6 14. a5 Nf6 15.
c5 h5 16. cxd6 cxd6 17. Nb5 g4 18. Bxa7 g3 19. Bb6 Qe7 20. Nc7 Nd7

?

And could you please post the rest of the game?

In King's Indian black should do whatever he can to avoid a knight seating at
c7, and thus threatening to move to e6, blocking the c8 bishop.

After 1.h3 black cannot go for the thematic sacrifice at h3, since after:
1. h3 Nxb6 2. axb6 Rxa1 3. Qxa1 Bxh3 4. gxh3 Qd7
white will block the h3-c8 diagonal by 5. Ne6

1. h3 Nxb6 2. axb6 Rxa1 3. Qxa1 Qh4 will also be blocked by 5. Ne6


>please indicate your result.



This page took 0 seconds to execute

Last modified: Thu, 15 Apr 21 08:11:13 -0700

Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.