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Nov-23-05
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| KingG: Why not 21.hxg3 ? |
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| Nov-23-05 |
| square dance: <KingG> i had fritz8 analyzing for over 2 hours while i ran some errands and it gave a  1.38 evaluation after 21.hxg3. |
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Nov-23-05
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| KingG: <square dance> Yeah, my Fritz 8 also seems to think that 21.hxg3 is a good move. This seems to be a standard sacrifice in the King's Indian though, and it's possible that Fritz won't see the danger until it's too late. Although, if you've let it run for over 2 hours(!) and it still can't calculate far enough, then that would be quite surprising. In any case, i'm pretty sure it was better than what was played in the game, which seems to be loosing. Anyway, i'll try and find a winning attack after 21.hxg3 without relying on Fritz too much, because it can be a bit misleading in these kind of positions. |
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Nov-23-05
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| KingG: The best i can find so far is 21.hxg3 fxg3 22.Bxg3 Nh5 (22...Bh6!?) 23.Bf2 Ngf4 24.Nxa8 Qg5 25.g4 Bxg4 26.fxg4 Nh3+ 27.Kg2 N5f4+ 28.Kg3(28.Kf3 Nh5+ 29.Kg2 N5f4+ perpetual) Nxe2+ 29.Qxe2 Nf4 30.Qf3 Nh5+ 31.Kh3 Nf4+ 32.Kh2(32.Kg3 Nh5+ 33.Kh3 Nf4+(33...Rxf3+ 34.Nxf3 Nf4+ 35.Kh2 Qh6+ ) 34.Kg3 perpetual) Qh6+ 33.Kg1 Nh3+ 34.Qxh3 Qxh3 35.Ng2 Qxg4 36.Bxa7 Rxf1+ 37.Rxf1 h5.
click for larger view |
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| Dec-06-05 |
| monad: Help!
I am reading a book which uses this game as an example of an open position, after move 12. Good stuff. It is a variation at 22. that I can't understand. The author says that 22.Bxa7 doesn't work for White because it leads 'to a quick mate on h2'. How I wonder? Can anybody help? Apparently this game was written up in the Informator 48. If there is anybody who can throw light on this and/or has access to this Informator 48, I would be most grateful to hear from them. My sequence after the suggested 22.Bxa7 Qh4 23.h3 Bxh3 would be 24.gxh3 Qxh3 25.Rf2 gxf2+ 26.Kxf2 Qh4+ 27.Kg1 Qg3+ into a draw. I cannot find a mate there. What am I missing here.
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| Dec-06-05 |
| sucaba: Have no Informator analysis but after 22.  xa7  h4 23. h3 xh3 24. gxh3 xh3 25.  f2 gxf2+ 26.  xf2 g7! seems to be the right way to start, e.g. 27. f1 h2+ 28.  ()g2 h4 or 27. c7 e7 28. f1 h2+ 29. ()g2 h4. |
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Dec-06-05
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| KingG: <sucaba> What about 27.Nd3!, does Black have anything better than perpetual? |
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| Dec-07-05 |
| sucaba: <KingG>, good question, and I'm afraid the answer is no. However, we can change the move order: 22. xa7 h4 23. h3 g7!? . One sample line: 24. d2 xh3 25. gxh3 xh3 26. d1 g2 27. xg2 h4 28. c2 g3 29. d3 xe4 should win for black. My Fritz-database gives no lines, just an "only move" symbol for 22. h1.
But for 21. hxg3 their main-line is 21. _ fxg3 22. xg3 h6! 23. xa8 h5 24. f2 hf4 25. d3! g7 26. xf4 xf4 27. g4! xc1 28. c1 f3 29. e3 h5!  (exclamationmarks and evaluation by the anonymous author). |
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| Dec-07-05 |
| alicefujimori: 22.Bxa7 Qh4 23.h3 Bxh3 24.gxh3 Qxh3 25.Rf2 gxf2+ 26.Kxf2 Nh4 27.Nd3 Qg3+ 28.Kf1 Ng2 (threatening 29...Ne3+) 29.Qd2 Qh2 30.Bg1 Ng3+ 31.Kf2 Nxe4+ 32.fxe4 Qg3+ 33.Kf1 Ne3+ and mate is coming. |
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Dec-07-05
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| KingG: <alicefujimori> Yes, your line seems to be correct, well done. |
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| Dec-07-05 |
| monad: Good morning folks.
I am astonished by the willingness with which all of you have taken up my problem. Alice's solution seems extremely promising for the honour of my mysterious author. Thank you so much. What an impressive sequence you put together. <alicefujimori: 22.Bxa7 Qh4 23.h3 Bxh3 24.gxh3 Qxh3 25.Rf2 gxf2+ 26.Kxf2 Nh4 27.Nd3 Qg3+ 28.Kf1 Ng2 (threatening 29...Ne3+) 29.Qd2 Qh2 30.Bg1 Ng3+ 31.Kf2 Nxe4+ 32.fxe4 Qg3+ 33.Kf1 Ne3+ and mate is coming.> There's more in the author's treatment of this game, which I will raise later if I may. (First I have to sit in the corner and cry for a bit, bemoaning the fact that I could not see this ;-) |
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Dec-07-05
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| euripides: <monad> your author's honour is rather more seriously called into question by his/her remarkable claim that the position after move 12 is open. Most textbooks would treat this as a classic closed position. Must be John Watson in paradoxical mode. |
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| Dec-07-05 |
| monad: <euripides: Open/closed.> Fair comment, but I have to confess to confusing the two games I was comparing. The game was indeed described as firmly closed. So no blame attached to the author on that score, (and it is not the one you mentioned). I wonder if anyone might hark back to the sequence suggested by Alice below. I was impressed by the move choice 26...Nh4 and admittedly, it doesn't look good for White after 27.Nd3, but is there a chance for survival after 27.Bf1? And what would Black play after that? I hasten to add that I would never suggest White play 22.Bxa7, as snatching a distant pawn when your King is under threat is not a safe option on the whole, but I could not accept that this resulting mate is either obvious or quick. The reason I am spending so much time on this, is the fact that a couple of lines later the author tells me to get lost:
<"A common mating pattern. You cannot make any progress in chess until you notice such tactical devices. So if you cannot grasp the idea if this variation, put this book away and find one on tactical combinations. Only then should you return..."> |
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| Dec-18-05 |
| sucaba: 22. xa7 h4 23. h3 xh3 24. gxh3 xh3 25. f2 gxf2+ 26. xf2 h4 <monad>:<but is there a chance for survival after 27.f1? And what would Black play after that?> 27. _ h2+ 28. (or )g2. Now 28. _ g8 ?! leads to my suggestion from December 6th 2005. But then the white can escape to the wing with 29.e2. Better first 28. _ g3 and Black should win. |
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| Mar-08-06 |
| DeepBlade: The final position is very unique |
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Apr-17-06
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| notyetagm: 28 ... h1! is a very elegant way to pile on the fully-pinned White f2-rook. |
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Jun-04-06
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| KingG: In a note in OMGP IV, Kasparov writes he would have followed up 21.hxg3 fxg3 22.Bxg3 Bh6! 23.Nxa8 Nh5. Fritz isn't too impressed at first, but it does seem to give a dangerous attack. In fact, it seems that the attack is winning! I'll give a few variations to illustrate the point. It's truly a beautiful attack, and i would encourage everyone to play through some of the variation, or to analyse it with Fritz, or some other chess program. 21.hxg3 fxg3 22.Bxg3 Bh6! 23.Nxa8 Nh5
Now there are only 2 reasonable moves, 24.Bf2 and 24.Bh2. 1)24.Bf2 Bxc1 25.Qxc1 Ngf4
1a)26.Bd3 Qg5 27.Qe3 Ng3! 28.Bxg3 (28.Nc7 Rf6–+ 29.Bxg3 Qxg3! (29...Nh3  ) 30.Ne6 Bxe6 31.dxe6 Rh6–+) 28...Nh3+ (28...Qxg3?? 29.Qxa7  ) 29.gxh3 Qxe3+ 30.Kh2 Rg7 31.h4 Qd2+ 32.Bf2 Ba4!! 33.Kh3 (33.a6 Qf4+ 34.Kh1 Bd1! 35.axb7 Bxf3+ 36.Ng2 Bxg2+ 37.Kg1 Bf3+ 38.Bg3 Qxg3#) 33...Qf4 34.b5 Bd1 35.Rg1 Rxg1 36.Bxg1 Qd2–+ 1b)26.Qc2 Rg7 27.g4 Nxe2+ 28.Qxe2 Nf4 29.Qd2 Bb5 30.Be3 Ne2+! 31.Kg2 Qh4 32.Bf2 Rxg4+!! 33.fxg4 Qxg4 34.Kh2 Qh5+ 35.Kg2 Nf4+ 36.Qxf4 Bxf1+ 37.Kxf1 Qh1+ 38.Ke2 exf4 39.Nf3 Qb1! and the Queen is too much for the disjointed White pieces(D1) 2)24.Bh2 Be3+ 25.Rf2 (25.Kh1? Qh4–+) Ngf4
2a)26.Nd3 Qh4 27.Rc2 Rg7 28.g4 (28.Nxf4 Qxf2+ 29.Kh1 exf4 30.Bb5 Ng3+ 31.Bxg3 Qxg3 32.Bxd7 Rxd7–+) 28...Nh3+ 29.Kh1 Bxf2 30.Bf1 (30.gxh5 Be1! 31.Qxe1 Qxe1+ 32.Nxe1 Nf2#) 30...Ng3+(D2) 31.Kg2 Nxe4! 32.Kh1 Ng3+ 33.Kg2 Nf5 34.Kh1 Ne3 35.Qe2 Rxg4!! 36.fxg4 Bxg4 37.Qd2 Bf3+ 38.Bg2 Bxg2# 2b)26.Rc3 Bxf2+ 27.Kxf2 Qh4+ 28.Kg1 Rg7 29.Bxf4 (29.Qd2 Nh3+ 30.Kh1 Qf2 31.gxh3 Rg1+ 32.Bxg1 Ng3#) 29...Nxf4 30.Kf1 Bh3! 31.Kg1 Qg3 32.Bb5 Bxg2 33.Rc8+ Kf7 34.Rc7+ Kf6 35.Rxg7 Nh3# |
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Jun-04-06
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| KingG: D1
click for larger view
The Queen mops up the loose pawns and pieces.
D2
click for larger view
What a position!
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Nov-17-07
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| kingscrusher: monad and sucaba: I have left Rybka running for about an hour nearly at 22 ply to analyse the Bxa7 variation. Here is the crushing method:
22. Bxa7 Qh4
23. h3 Bxh3
24. gxh3 Qxh3
25. Rf2
click for larger viewNow here are some delicate but crushing manoevers by black: 25..gxf2+
26. Kxf2 Qg3+
click for larger view27. Kf1 Nh4!
28. Nc2 Ng2!
29. Ra1
And now comes the "coup de grace" which engines have great difficulty seeing. It is a real beauty: 
click for larger view29.. Be7!!!
click for larger viewWhite is overloaded against the threat now of Bh4!
Here is the raw analysis to clipboard:
Analysis by Rybka 2.2n2 mp 32-bit :
1.  (-3.64): 26...Qg3+ 27.Kf1 Nh4 28.Nc2 Ng2 29.Ra1 Be7 30.Bc4 Ne3+ 31.Ke2 Qg2+ 32.Kd3 Nxd1 33.Rxd1
2. ³ (-0.70): 26...Qh4+ 27.Kg1 Qg3+ 28.Ng2 Nh4 29.Qf1 Rg7 30.Bf2 Qh3 31.Bxh4 Ng3 32.Rc7 Nxf1 33.Rxg7+
3. ³ (-0.37): 26...Nh4 27.Bf1 Qh2+ 28.Ng2 Ng3 29.Ke1 Nxg2+ 30.Bxg2 Qxg2 31.Nc7 Nxe4 32.Ne6 Qh1+
4. = (0.00): 26...Rg7 27.Nd3 Qh4+
5. = (0.00): 26...b6 27.Rc7 Qh4+ 28.Kg1 Qg5+ 29.Ng2 Nh4 30.Qf1 Ng3 31.Qf2 Rxc7 32.Nxc7 Nxe2+ 33.Qxe2
6. = (0.00): 26...Qh2+ 27.Ng2 Nh4 28.Qg1 Qg3+ 29.Kf1 Rg7 30.Rc7 Qxg2+ 31.Qxg2 Rxg2 32.Bf2 Ng3+
7. = (0.21): 26...Be7 27.Bf1 Qh2+ 28.Ng2 Nh4 29.Ke2 Nxg2 30.Bxg2 Qxg2+ 31.Kd3 Rg7 32.Rc2 Qh3 33.Rc7
8. = (0.25): 26...b5 27.Rc7 Qh4+ 28.Kg1 Qg5+ 29.Ng2 Nh4 30.Qf1 Ng3 31.Qf2 Nxe2+ 32.Qxe2 Qg3 33.Kf1 |
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Nov-18-07
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| kingscrusher: I have tried to capture some of the analysis in the following video annotation. This game is an incredible engine test - can you see with engines if you think the Rook sac on a8 is sound in all variations - it was quite a struggle for me :) Video annotation:
http://www.youtube.com/watch?v=TO-J... |
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| Jan-10-09 |
| WhiteRook48: this is genuinely "exploiting the pin" |
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Jun-11-09
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| zanshin: <kingscrusher> Outstanding youtube video on this game. Fwiw, Rybka 3 found <20.g3> at d=19, although she decided to give up the Rook earlier.
click for larger view[+0.53] d=19 20...g3 21.hxg3 fxg3 22.Bxg3 Nh5 (0:17.36) 108685kN [+0.66] d=19 20...gxf3 21.gxf3 Rc8 22.Ne6 Qe8 23.Rxc8 Qxc8 24.Qb3 Qb8 25.Kh1 Be7 26.Rg1 Ne8 27.Bc4 Kh8 28.Nd3 Bh4 29.Bxh4 (0:12.51) 79036kN ...
[+0.79] d=17 20...Ba4 21.Qxa4 Rxc7 22.Rxc7 Qxc7 23.Nd3 a6 24.Rc1 Qg7 25.Rc3 Nh8 26.Qc2 Re8 27.Rc7 Re7 28.Rxe7 Qxe7 29.Nb2 gxf3 30.Bxf3 Ng6 31.Nc4 (0:02.14) 12901kN ...
[+0.87] d=10 20...Rc8 21.Ne6 Qe8 22.Bxa7 Rxc1 23.Qxc1 Bxe6 24.dxe6 Qxe6 25.Bc4 d5 26.exd5 Nxd5 27.Qd2 Rd7 28.b5 gxf3 29.Nxf3 (0:00.01) 159kN |
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| Jun-20-09 |
| vanderyacht: Is there anything wrong with playing 21...Ne6? Black either sacrifices his light squared bishop or moves his queen and his bishop remains blocked on the c8-h3 diagonal. White can then play hxg3. Sorry in advance if I'm lowering the level of discourse in this thread. |
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| Jul-25-09 |
| levelzx: <vanderyacht> 21. Ne6 gxf2+ 22. Rxf2 Bxe6 23. dxe6 Rg7. Black is simply full piece up with this line. He also has g-file for further operations, so the whole idea seems to be unsuccessful. |
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| Sep-17-09 |
| Gouvaneur: I love this game.
It's really the most "Kingsindian" Game ever.
Black is attacking on the King Side, White on the Queen side.Black is ready to sacrifice material on the Q-side in order to win with his attack. Black demonstrates with some analysis that the sacrifices are sound - and prooves the dynamics in the black position. In the end Black just wins material and gets a won game. I've got the Kings Indian book by Knaak and Vogt, and played through Kasparov's analysis. Very insightful.
I don't know if Kasparov prepared this at home, but I'm pretty sure of it. Very modern chess played there, and prooving that analysis can surpass principles. |
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sac: 20...g3