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Kirill Bryzgalin vs Alexei Iljushin
RUS-ch U20 (1998), Sochi, rd 11
Formation: King's Indian Attack (A07)  ·  0-1

ANALYSIS [x]

FEN COPIED

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sac: 29...Rxf4 PGN: download | view | print Help: general | java-troubleshooting

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 2 OF 2 ·  Later Kibitzing>
Dec-13-20
Premium Chessgames Member
  al wazir: I actually considered the game line, but I went with 28...Nxh4 29. Bxe4+ Qxe4+ 30. Kh2 Qxc2+ 31. Kg1 Rxf4 32. gxh4 (32. gxf4/Qxf4 Qg2#) Qf2+ 33. Kh1 g3.

I think that's a win.

Dec-13-20
Premium Chessgames Member
  drollere: why isn't Nxh4 with threat of Bxg2+ the better way? i don't get it.
Dec-13-20
Premium Chessgames Member
  beatgiant: I think the answer to <why not 28...Nxh4> is simply 28...Nxh4 <29. gxh4> Qxh4+ 30. Kg1. White's attacking the rook on f8, and I'm not seeing Black's follow-up.
Dec-13-20
Premium Chessgames Member
  Messiah: <beatgiant: I think the answer to <why not 28...Nxh4> is simply 28...Nxh4 <29. gxh4> Qxh4+ 30. Kg1. White's attacking the rook on f8, and I'm not seeing Black's follow-up.> I agree, after 28...Nxh4 there is no very good continuation for Black, regardless of the fate of the Bishop on g2. 28...Nxh4 29. gxh4 Bxg2+ 30. Kxg2 Qe4+ is not immediately won, and 28...Nxh4 29. gxh4 Bxg2+ 30. Nxg2 Rf2 must be defendable.

I pondered on tricks around 28...Nxh4 29. gxh4 Ka7 or 29...Bxg2+ and then Ka7, with the intention of bringing the Queen on b7, but never really seems to work.

The immediate 28...Rxf4 has no positive effect, sadly.

Dec-13-20  Brenin: Does Black have anything after 34 Kg3, other than loss of the B or N? After an imaginative attack, he seems to lose the thread with 32 ... Bf3 (Bc6 safer?) and 33 ... Qd7 (better Qe3, e.g. 34 Qxh4 Qe2+, with mate).
Dec-13-20  ChessEagle: Great!
Dec-13-20  Brenin: <Walter Glattke>: I'm afraid that 28 ... Nxh4 (not h5) 29 gxh4 Qxh4+ 30 Kg1 g3 loses to 31 Bxe4+, with mate to follow, e.g. 31 ... Ka7 32 Qg7+ Kb6 33 Qb7+ Ka5 34 axb4#
Dec-13-20  Walter Glattke: Ok, that check spoils my morning comment, I try 29.-Bxg2+ 30.Nxg2 g3 31.Re1 Qd7, otherwise one must follow the match continuations with not 28.-Nxh4. For less strong kibitzers: 32.Qe6 Qxe6 33.Rxe6 Rf1# 32.Kg1 Qh3 33.Qg7+ Kb6 34.Qxf8!? Qh2+ 35.Kf1 Qh1#
Dec-13-20
Premium Chessgames Member
  Messiah: <Brenin: Does Black have anything after 34 Kg3, other than loss of the B or N?>

I did not find anything useful for ...Qd2, so I shamefully asked the digital monster for its opinion. Interestingly, it did not find anything better than


click for larger view

info depth 50 seldepth 47 multipv 1 score cp 0 nodes 2868072580 nps 3367306 hashfull 945 tbhits 23892830 time 851741 pv d7d2 g5e7 b7a8 e7f8 a8a7 f8c5 a7a8 c5c8 a8a7 a3a4 h4g6 c8c5 a7b7 g3f3 d2f4 f3e2 f4e4 e2d2 e4g2 d2e3 g2g3 e3e4 g3f4 e4d3 g6e5 d3e2 f4f3 e2d2 f3f4 d2e1 e5f3 e1e2 f3d4 e2d3 f4f3 d3c4 f3e2 c4d4 e2f2 d4c4 f2c2 c4d5 c2f5 d5d4 f5f2 d4c4

For anyone not familiar with command-line analysis, 'cp 0' means that the calculated variation is completely equal. Out of sheer curiosity I said to our digital friend let's look at the original position (that was a bad idea - I had to figure out myself where Black went wrong - i.e. to allow Kg3 - but I was lazy). The result is


click for larger view

info depth 39 seldepth 75 multipv 1 score cp 820 nodes 4423449731 nps 4839448 hashfull 995 tbhits 17249750 time 914040 pv f8f6 h6h5 f6f4 g3f4 f3h4 a1g1 e4g2 h1h2 g2c6 g1g4 e7e1 h2h3 h4f3 g4g7 b7b6 g7g6 e1h1 h3g4 h1g2 g4f5 g2c2 f5f6 b4a3 b2a3 c2c3 f6f5 b6a5 g6g8 c3d4 g8b8 d4d7 f5f6 d7d6 f6g7 d6c7 h5f7 c7b8 f7e7 b8b2 g7f7 b2b3 f7f8 b3a3 e7c7 a5b5 c7b8 b5a4 b8b6 c6b5 f4f5 c5c4 f8f7 a6a5 f5f6 a4b4 f7e7 c4c3 e7e6

Here 'cp 820' means -8.2 for White.

WARNING: blindly trusting an engine output is equally wrong for amateurs and grandmasters. Use the copypasted results with caution, calculate stuff yourself, if you want insights.

Dec-13-20  morfishine: <28...Rxf4> was all I considered
Dec-13-20  Walter Glattke: But 32.Qxf8 Qh3+ 33.Kg1 Qh2+ 34.Qf1 Qh1+ 35.Ke2 Qxg2+ maybe 31.-Qf7 32.Nf4 Qxf4 with little black advantage.
Dec-13-20  awfulhangover: Uff, too difficult.
Dec-13-20
Premium Chessgames Member
  thegoodanarchist: Black's advantage was no Iljushin.
Dec-13-20
Premium Chessgames Member
  thegoodanarchist: <Messiah> That kind of jibberish post is his "schtick".
Dec-13-20  landshark: Today I can't hack it because the board doesn't stay still once I've delved into the real game and am trying to look at it after the first move of the puzzle sequence -

F--k this!!!!

CG you need to do <at least something> about the adds jumping all around the site and flashing, etc, if you want to keep your viewers.

Dec-13-20
Premium Chessgames Member
  Yuridmi: Looks like White's 28. a3 is a disaster. The fight is on the Kingside, with immediate action required. White can stay in the game with either 28. Rd1 or 28. Qe6
Dec-13-20  Brenin: Many thanks, <Messiah>, for that analysis of 34 Kg3 Qd2. Some of those moves are hard for mere carbon-based life-form like me to understand, e.g. having driven Black's K into the a8 corner and protected the Ps on c2 and f4 with Qc7, why play a4 when axb4, opening up the a-file and threatening mate on a6, is possible, or why not take the hanging N with Kxh4? But who am I to argue with something called <info depth 50 seldepth 47 multipv 1 score cp 0 nodes 2868072580 nps 3367306 hashfull 945 tbhits 23892830 time 851741 pv>? Whatever, this confirms my impression that White could have had at least a draw with 34 Kg3.
Dec-13-20
Premium Chessgames Member
  agb2002: White threatens Nxh5, Qxh5, and axb4-Qxa6+.

Black's pieces look ready to attack the white king. White's g-pawn becomes overburdened after 28... Rf6:

A) 29.Qxh5 Rxf4 30.gxf4 Nxh4 31.Rg1 (31.Bxe4 Qxe4+ 32.Kg1(h2) Qg2#) 31... Bxg2+

A.1) 32.Rxg2 Qe1+ 33.Rg1 (33.Kh2 Nf3#) 33... Qe4+ 34.Kh2 Qxf4+ 35.Rg3 (35.Kh1 Qf3+ 36.Kh2 Qh3#) 35... Qf2+ 36.Kh1 Qxg3

A.1.a) 37.Qf7+ Qc7 is winning (38.Qd5+ Qc6).

A.1.b) 37.Qh7+ Kb6 38.Qh6+ Kb5 39.c4+ (39.a4+ Ka5 -39... Kxa4 40.Qxa6#-) 39... bxc3 40.a4+ Ka5 is winning.

A.1.c) 37.Qd5+ Kb6 38.Qe6+ Kb5 39.c4+ (39.a4+ Ka5; 39.Qd7+ Kc4) 39... Ka5 40.axb4+ Kxb4 41.Qb6+ Kxc4 42.Qxa6+ Kd4 looks winning.

A.2) 32.Kh2 Bf3 looks very good for Black.

B) 29.Qh8 Rxf4 is winning (30.gxf4 Qxh4+ 31.Bh3 Qxh3#).

The alternative 28... Nxh4 29.gxh4 doesn't seem to achieve much after either 29... Qxh4+ 30.Kg1 or 29... Bxg2+ 30.Nxg2 (30.Kxg2 Qe4+ 31.Kg3 Qf3+ 32.Kh2 g3+ 33.Kh3 (33.Kg1 Qf2+ 34.Kh1 Qh2#) 33... Qg4+ 34.Kg2 Rxf4 is winning).

Dec-13-20
Premium Chessgames Member
  agb2002: I missed a mate in few moves in my line A.1: 35... Nf3+ followed by Qc1+ or Qd2+.
Dec-13-20
Premium Chessgames Member
  drollere: <landshark: Today I can't hack it>

this isn't too helpful. email <chess@Chessgames.com> and specify your operating system and version, browser and version, and if possible a screen shot of the problem and a description of when (how) the problem occurs.

for example, ads do not jump all around a "site". a "site" is a server with an IP address. the ads jump around in browser windows, depending on when and how you upload or interact with a web page.

Dec-13-20
Premium Chessgames Member
  drollere: < Messiah: chrisowen: ... Too much crack, my friend?>

no ... not enough "user ignore":

Chessgames Help

Dec-13-20  olinart: I thought Nxh4 wins:
28. .. Nxh4 29. gxh4 Bxg2+ 30. Kxg2 Qe4+ 31. Kg3 Qf3+3 2. Kh2 Rxf4 gives black a winning attack. but
31. Nxg2 Qf2+ 32. Kh1 g3 33. Rg1 Rf5 34. Qh7+ Rf7 35. Qxh5
seems to defend for white.
Dec-13-20
Premium Chessgames Member
  al wazir: <beatgiant: I think the answer to <why not 28...Nxh4> is simply 28...Nxh4 <29. gxh4> Qxh4+ 30. Kg1.>

Yes, you're right. I realized that after I posted.

Dec-13-20  landshark: <Drollere>
Thank you!
Helpful - your constructive feedback is appreciated (:
Dec-14-20
Premium Chessgames Member
  sophiephilo: me too, morfishine.
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