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|Jul-17-09|| ||Marmot PFL: <Phony Benoni:> Good one! Maybe you should edit a chess magazine...|
|Jul-17-09|| ||agb2002: Black threatens 9... gxh4 but is seriously behind in development and the light squares around his king and queen are weak. This suggests 9.Bxg5 hxg5 (else drops a pawn with an ugly position) 10.Bxf7+:|
A) 10... Kxf7 11.Nxg5+
A.1) 11... Kg6 12.Ne6
A.1.a) 12... Qe8 (or 12... Bb7) 13.Qg4+ Kf6(7) (13... Kh6 14.Qg5+ Kh7 15.Qxg7#; 13... Kh7 14.Qxg7#) 14.Qxg7+ Kxe6 15.d5#.
A.1.b) 12... Ngf6 13.Nxd8 Rxd8 14.e5 dxe5 15.dxe5 + - (15... Nxe5 16.Qxd8).
A.2) 11... Kf6 12.Qg4 (threatening 13.Qf5#, 12.Qf3+ Kxg5 13.h4+ Kh6 (13... Kg6 14.h5+ Rxh5 (otherwise the white queen mates on g6) 15.Qxh5+ Kf6 16.Qf5#) 14.Qf4+ Kh7 (14... Kg6 15.h5+) 15.Qf5+ Kh6 and probably White doesn't have anything better than perpetual)
A.2.a) 12... Nf8 13.Nd5+ Kg6 14.Ne6+ Kf7 (otherwise mate soon) 15.Nxd8+ Ke8 16.Qxg7 + -.
A.2.b) 12... Nh6 13.Nd5+ Kg6 14.Nf4+ Kf6 15.Qe6+ Kxg5 16.h4+ Kxf4 17.g3+ Kf3 18.Ra3+ Kg2 19.Qh3#.
A.2.c) 12... Ne5 13.Nd5+ Kg6 14.Nf4+ Kf6 15.dxe5+ Kxe5 (15... dxe5 16.Nh7+ and mate next) 16.Nf7+ Kd4 (16... Kf6 17.Qg6#; 16... Kxe4 17.Qf3+) 17.Qd1+ Kxe4 18.Qf3+ and 19.Nxd8 + -.
A.2.d) 12... Bxd4 13.Qf5+ Kg7 14.Ne6+ Kh6 15.Nxd8 + -.
A.2.e) 12... e5 13.Qf5+ Ke7 14.Qf7#.
A.2.f) 12... e6 13.Nxe6 + -. For example:
A.2.f.i) 13... Nf8 14.Qxg7+ Ke8 (14... Kxe6 15.d5#) 15.Nxd8 + -.
A.2.f.ii) 13... Nh6 14.Qxg7+, etc.
A.2.f.iii) 13... Qe7 14.Nd5+ Kf7 15.Qxg7+ Kxe6 (15... Ke8 16.Ndxc7#) 16.Nf4#.
A.3) 11... Ke(f)8 12.Ne6 + - and White ends up with Q+3P vs. 2B+N.
B) 10... Kf8 11.Nxg5, threatening 12.Ne6+ with a considerable compensation for the knight. For example, 11... Ndf6 12.Qf3 e5 13.dxe5 dxe5 14.Bd5 Rb8 15.Nf7.
|Jul-17-09|| ||Patriot: <Arbiter58>
It seems black is a pawn down for little to nothing. White could even play 10.Be3 and he's pretty solid.
|Jul-17-09|| ||playground player: <Phony Benoni> You da man! Your extended pun was even more enjoyable than the puzzle.|
|Jul-17-09|| ||JG27Pyth: Well, put me in the crowd -- got the first part fine but then the combination slipped off into the mists of I-can't-calculate-that-far... |
Sergei Rublevsky... I don't know why but that name sounds pat, made up... like a cheesey novelist's idea of a russian-chessplayer-name.
I can see it now, Sylvester Stallone stroking his chin and studying some horrible position in which both kings are in check. "Ahhh yes, the Rublevsky gambit" ... He moves a pawn sideways.
|Jul-17-09|| ||doubledrooks: <Phony Benoni>'s comment is the cream of the crop.|
As for the puzzle, I spent time looking at 9. Bxg5 hg 10. Nxg5 before realizing that 10...e6 stops that in its tracks.
Then I found the game continuation of 9. Bxg5 hg 10. Bxf7+ Kxf7 11. Nxg5+ Kf6 12. Qg4.
|Jul-17-09|| ||YouRang: I spent a bunch of time trying to figure out where to put my Nf3, so that I could play Qh5 with devastating effect.|
I see that Rublevsky opted for a more complicated line, which admittedly, had the advantage of being effective.
Actually, I did notice black's vulnerability due to the attack on f7 and on the immobility of black's queen (subject to knight attack). But I didn't see (or try very hard) to put the ideas together. :-(
|Jul-17-09|| ||fizixgeek: Amazing!|
|Jul-17-09|| ||tatarch: Great attack -- I definitely didn't see it|
|Jul-17-09|| ||tamar: Knights will play
Hippy hoppy hey!
Hippy hoppy hey!
Like a tango around you.
|Jul-17-09|| ||hedgeh0g: <A.G. Argent: <karnak64> English please.>|
I believe that translates roughly as "HAHAHAHAHA!!", give or take an exclamation mark.
|Jul-17-09|| ||outplayer: 10...Kf8! is easy to find.|
|Jul-17-09|| ||outplayer: 11...Kf6?? is a terrible blunder.|
|Jul-17-09|| ||gawain: That's beautiful. After the King gets flushed out by White's moves 9 through 11 I simply could not visualize how the mate was going to be forced. I was afraid that Qg4 would give Black too much opportunity to marshal a defense.|
I'd like to think I could have worked it out move by move after 12...Ne5 if I had set up a board and moved the pieces around. But these combinations have to be worked out in our heads!
|Jul-17-09|| ||WhiteRook48: last thing I'd thought of
I was thinking 9 Nxg5?!?!?!
|Jul-17-09|| ||wals: Rybka takes a different line -
Sergei Rublevsky - Carlo D'Amore, 34th Olympiad 2000
Analysis by Rybka 3 1-cpu: Time 7min25 18 ply
1. (1.16): 9.Bxg5 Bb7 10.Bh4 c5 11.Bd5 Bxd5 12.exd5 Nf8 13.0-0 Ng6 14.Bg3 Nf6 15.Qd3 Qc7 16.Qc4 0-0
2. (0.93): 9.Bd5 Rb8 10.Bxg5 c6 11.Ba2 hxg5 12.Bxf7+ Kf8 13.Nxg5 Ndf6 14.Bb3 d5 15.Qd2 Bh6 16.e5 Nh5 17.0-0-0 Ke8 18.h4 Bf5 19.Kb1
|Jul-17-09|| ||Coigach: I approached this using Patriot's helpful suggestions about how to improve calculation/visualisation from yesterday, giving myself half an hour with pen and paper.|
I was looking at 9 Bxf7+ first, which seems weaker because B probably doesn't have to recapture after 10 Bxg5.
However, I was relatively pleased to get to 11 Ng5+ and see that ..Kf6 was the only way for B to resist, but then got foggy-headed trying to find a win after 12 Qf3+ with Kxg4 13 Qf5+ Kh6 when 14 g4 is no good because ..Ndf6.
So I think what makes this a difficult puzzle is the need to find the less forcing move 12 Qg4, and then calculating that none of B's ways of preventing 13 Qf5 mate can save the game. That's a pretty deep and broad analysis tree to produce before playing move 9!
I agree that over the board one might naturally think of sacrificing two pieces to get the BK so far into the open. But without the most accurate follow up W would likely end up with a lost game if B gets chances to develop pieces.
|Jul-17-09|| ||ohfluckaduck: I think black 10... Kf8 may hold.
e.g.10... Kf8 11. Ng5 Ndf6 12. e5 dxe5 13. dxe5 Qxd1+ 14. Rxd1 Bf5
|Jul-17-09|| ||Summerfruit: Material is even.
White launches a winning attack with:
9.Bxg5! hxg5 10.Bxf7+!
a) 10...Kf8 11.Nxg5 , threatening 12.Ne6+ seems to win.
b) 10...Kxf7 11.Nxg5+
b1: 11...Ke8/Kf8 12.Ne6(+) and the queen is lost.
b2: 11...Kf6 12.Qf3+
b21: 12...Kg6 13.Qf5+ Kh5 14.Ne6+/Nf7+ Kh4 15.Qg5#
b21: 12...Kxg5 13.Qf5+ Kh4 14.g3#
b3: 11...Kg6 12.Ne6 Qe8 13.Qg4+
b31: 13...Kf6/Kf7 14.Qxg7+ Kxe6 15.d5#
b32: 13...Kh7 14.Qxg7#
|Jul-17-09|| ||johnlspouge: Friday (Difficult):
Rublevsky vs C D'Amore, 2000 (9.?)
White to play and win.
Material: Even. The Black Ke8 has 1 legal move. White leads in development, by 2 pieces and the move. The White Bc4 attacks Pf7, suggesting a decoy or K hunt might be afoot. The White Ke1 is secured from check.
Candidates (9.): Bxg5
9.Bxg5 hxg5 [else, drop a P] 10.Bxf7+
(1) 10…Kf8 11.Nxg5 (threatening 12.Ne6)
Because of the hole at e6, Black is undeveloped in a hideous bind, with a B for 3Ps and an exposed Kf8.
(2) 10…Kxf7 11.Nxg5+
(2.1) 11…Ke1 [or Kf1] 12.Ne6 wins Qd8
(2.2) 11…Kg6 12.Ne6 Qe8 [else, drop Qd8]
13.Qg4+ Kf7 [Kf6 14.Qf5#] [Kh7 14.Qxg7#] [Kh6 14.Qxg7+ Kh5 15.Qg5#]
14.Qxg7+ Kxe6 15.d5#
(2.3) 11…Kf6 12.Qg4
(threatening 13.Qf5# or 13.Nd5+ 14.Ne6+ winning Qd8)
(2.3.1) 12…e6 13.Nd5+ Kg6 [exd5 14.Qf5+ Ke7 15.Qf7#] 14.Nxe6+
White wins Qd7, because interposition fails [14…Qg5 15.Qxg5].
(2.3.2) 12…Nh6 13.Qf4+ Kg6 14.Ne6 Qe8 15.Qg5+ Kf7
16.Qxg7+ Kxe6 17.d5#
There was a lot of case-chasing yesterday and today. I missed the game defense as usual, but the refusal of the second sacrifice has to be taken seriously: according to Toga, it is best play.
|Jul-17-09|| ||TheBish: Rublevsky vs C D'Amore, 2000|
White to play (9.?) "Difficult"
Knowing that White would like to bring the knight from f3 to g5 to initiate an attack on f7, the dark square bishop becomes expendable.
Now Black must choose between accepting the sacrifice (only way to refute it, as the saying goes) or just settle for being a pawn down, which will lose more slowly - unless Black gets lucky and somehow draws (unlikely since his position is greatly weakened and Black is behind in development as well).
9...hxg5 10. Bxf7+! (this must happen now; not 10. Nxg5? e6) and now:
A) 10...Kxf7 11. Nxg5+ Kf6 (11...Ke8 12. Ne6 and 11...Kf8 12. Ne6+ both win the queen, while 11...Kg6 12. Ne6 Qe8 13. Qg4+ Kf7 14. Qxg7+ Ke6 15. d5 is mate) 12. Qg4! (threatening both Qf5# and Nd5+) and now:
A1) 12...Nf8 13. Nd5+ Kg6 14. Ne6+ Kf7 15. Qxg7+ Kxe6 16. Qxh8 wins the exchange, and the attack on the king continues
A2) 12...Ne5 13. Nd5+ (or dxe5+) Kg6 14. Nf4+ Kf6 15. dxe5+ dxe5 16. Nge6! (threatening mate on f5 and g6) Kf7 17. Qxg7+ Ke8 18. Qf8+ Kd7 19. Qxd8+ Kc6 20. Qd5 mate.
B) 10...Kf8 11. Nxg5 Ndf6 12. e5 and the attack continues with three pawns for the piece.
|Jul-17-09|| ||TheBish: Funny, my line was very similar to the game, but I missed a mate in one in my rush! I did find a very amusing finish instead, which wins the queen on the way to mate.|
|Jul-17-09|| ||johnlspouge: < <A.G. Argent>: <karnak64> English please. >|
Hi, <A.G>. You are not alone.
Here is a useful link: http://www.urbandictionary.com/defi....
|Jul-17-09|| ||ohfluckaduck: This is stronger for black johnlspouge:
...Kf8 11. Nxg5 Ndf6
if 12. e5 dxe5 13. dxe5 Qxd1+ 14. Rxd1 Bf5
if 12. 12. d5 Nh7 13.Ne6+ Bxe6 14. Bxe6 Bxc3+
I think black can stave off an immediate attack. But with the huge kingside pawn majority, white should be able to win the endgame with proper play despite being down a piece.
|Jul-23-09|| ||LIFE Master AJ: I like the way Rublevsky jumped all over f7.|
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