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Rene Borngaesser vs Hendrik Seegers
Bundesliga 8384 (1984), Germany
Formation: King's Indian Attack (A07)  ·  1-0

ANALYSIS [x]

FEN COPIED

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 2 OF 2 ·  Later Kibitzing>
Jul-25-14  sushijunkie: Maybe because I was just doing some problems, but I saw this instantaneously. I don't usually. Man, this game is visual.
Jul-25-14  estrick: With his 21st and 22nd moves, Black pretty much participates in a 'help mate.'

The position is definitely bad, even losing, but he could have put up significantly more resistance.

Jul-25-14  smitten: <Ray C> 22..h6 doesn't help much because White can play 23.fxg7+ followed by ♕xh6+. But yeah, 22..♖g8 seems to be losing even faster.
Jul-25-14  smitten: Even worse IMO is 21..♔h8 because, like <estrick> pointed out, it seems to be creating a help mate.
Jul-25-14
Premium Chessgames Member
  An Englishman: Good Evening: This is how players tried to defend against the KIA during the 1960s. White's "sacrifice" was a known tactical weapon back then, and still packs rather a wallop today.
Jul-25-14  nalinw: I thought 19. Bxh7+ was winning after

19. ... KxB 20. Nf6+

but I didn't see the "backwards" knight capture 20.... Nxf6 :-)

Jul-25-14  Nick46: Hendrik seeks escape but Rene finds the Qsac.
Jul-25-14
Premium Chessgames Member
  Once: Yuck. I crashed and burned with this one.

I started looking at 19. Nf6+. It's the obvious move to play in the position - sacrificing a piece on f6 to open lines against the black king.

And whilst that seemed attractive, black did seem to have some defensive resources. So I thought I would "improve" on it by flicking in the classic Greek gift bishop sac first. Something like this:

19. Bxh7+ Kxh7 20. Nf6+ gxf6 21. Qh5+ Kg8 22. gxf6 Nxf6 23. exf6


click for larger view

Which is a fabulous position for white ... until you notice (as Fritzie immediately did) 23... Qd5


click for larger view

Oops. Black threatens to exchange queens and also his own mate on h1 or g2. White doesn't have time to check and mate (24. Qg4+ Ng6). The attack fizzles like an exhausted firework or my first marriage. Black gets to keep the extra material, which is coincidentally also like my first marriage.

Nul points today.

So rewind and point Fritzie at 19. Nf6+... However black captures, Fritzie is scoring it between 2 and 3. It only goes downhill so quickly because black obligingly plays Kh8 and Rg8 - the so called "extreme castling" which rarely works out.

Jul-25-14  devere: 19.Nf6+ gxf6 20.gxf6 Nf5 21.Bh6!! Kh8 22.Bxf5 exf5 23.Bg7+ Kg8 24.Qh5 Nc7 25.Bxf8 Qd5 26.f3 Kxf8 27.Qxh7 Ke8 28.e6!


click for larger view

and White wins. Nice problem.

Jul-25-14
Premium Chessgames Member
  Penguincw: Wow. I got 19.Nf6+ and 20...Ng6. :|
Jul-25-14  diagonalley: too hard for me :-(
Jul-25-14  Cheapo by the Dozen: I spent too much time trying to make

19 Bxh7+ Kxh7
20 Nf6+

work. Black has to accept the first sacrifice and decline the second, but there do seem to be multiple defenses after

20 ... Nf6
21 gxf6

I'll take another look later at a more direct 19 Nxf6+. What's confounding me is that, after enough exchanges, Black can play Qd5, simultaneously threatening mate and covering the h5 square White wants for his queen.

Jul-25-14  morfishine: I too tried <19.Bxh7+> before moving onto <19.Nf6+>, but couldn't progress past 19...Nxf6 20.gxf6 Ng6 21.Qh5 Rfd8

Curiosity drove me to go ahead and look at the game; I took a literal double-take when I saw Black make a series of self-mate moves at the end

*****

Jul-25-14  scormus: I had a quick go at this .... 19 Nf6, 20 fxg6. Wasnt sure what B would play after that.

<Once .... 19 Bxh7 and that great position?> Looks a lot like some of my games. Big positional plus, appealing piece sac, a check or two, open it up with a pawn. Great, super winning combo. One move later .... Oh no!!! :<

Jul-25-14  dfcx: 19. white to move. White has many pieces aiming on the king side, time to act. The most forcing move is 19. Nf6+
A) 19...gxf6 20 gxf6


click for larger view

The best defense is 20...Ng6 21. Bh6! stops the king from escaping.


click for larger view

ll black pieces are on the wrong side and hopeless against 22. Qh5 B) 19...Nxf6 20. gxf6
B1) 20...g6


click for larger view

. Bh6 and will play Qg4-Qh4 next if black moves the f8 rook first. 21...Nf5 22. Bxf5 exf5 23. Bxf8 and white is definitely winning.

Jul-25-14  dfcx: on second thought in my B1 variation white should play 23. Qd2 followed by Bg7 Qh6 and mates soon.

Black actually played 20...Ng6 which leads to mate in 4.

Jul-25-14
Premium Chessgames Member
  kevin86: The knight sacrifice was no surprise, the queen WAS! This game could be a future Monday puzzle.
Jul-25-14  poachedeggs: Clearing the knight seemed intuitive...

Bringing the rook in via Kg2 was killer...

Jul-25-14
Premium Chessgames Member
  Jimfromprovidence: A more difficult line might be 21...Bxe4 22 Rxe4 gxf6 23 exf6 Kh8.


click for larger view

White to play and win material.

Jul-25-14  gars: Beautiful! And, of course, I saw only up to 21) Qh5, nothing more.
Jul-25-14
Premium Chessgames Member
  ajk68: What's the threat after 21. Qh5, ?
I'm missing it.
Jul-25-14  Nichth: A fun alternative to 19.Nf6 is an immediate 19.Kg2, followed by 20.Nf6+ and Qh5 at some point soon after.
Jul-25-14  PJs Studio: Well...that's going to leave a mark.
Jul-25-14  WhiteRook48: Well, I thought 19 Bxh7+ was the way to go at first, but then realized that 19 Nf6+ was much more lethal. I messed up for Black's best defensive line, though, automatically assuming he had to answer with 19...gxf6 instead of 19...Nxf6. Geez, I have a horrendous blind spot when I believe I've already found the best possible line.
Jul-26-14
Premium Chessgames Member
  agb2002: I didn't find the time to analyze this puzzle but had the impression that both 19.Nf6+ and 19.Bxh7+ win, the latter being relatively more difficult because of the counter chances along the a8-h1 diagonal.
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