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Hillar Karner vs Mass
Bjelzy (1971)
Queen's Indian Defense: Classical. Traditional Variation (E17)  ·  1-0
ANALYSIS [x]

FEN COPIED

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 3 OF 3 ·  Later Kibitzing>
Dec-29-08  Patriot: White to play: "Very Easy"

After a quick scan of the board I noticed the unguarded bishop on b7, and see that white has an opposing bishop on g2. Immediately I wondered if I can create a discovered attack with the knight on f3.

9.Ng5 looks promising since it creates a double-threat--a discovered attack on the b7-bishop and a threat of mate on h7.

9.Ng5 Bxg5 10.Bxb7 and white wins a rook.

Dec-29-08  ZUGZWANG67: Or rather, the opposite... :)
Dec-29-08  Patriot: <TheaN: <9....Bxg5 10.Bxb7> not the maybe more obvious 10.Bxg5? Qc8! (Qxg5? 11.Bxb7 ) and Black will defend immediate material loss.>

Nice catch. 10.Bxg5 looks very tempting as it simplifies while threatening the queen and maintaining the threat on b7 and a8. But 10...Qc8! and both threats stop. Without seeing this right-away, I decided to just take on b7 and not give black a chance to recover some of the material with something like 10...f6. I didn't bother calculating this further since it is unnecessary. Just play 10.Bxb7 and win the rook. I thought black might be able to trap the bishop, but it's not really an issue since white is already technically winning.

Dec-29-08  ZUGZWANG67: <TheaN: <9....Bxg5 10.Bxb7> not the maybe more obvious 10.Bxg5? Qc8! (Qxg5? 11.Bxb7 ) and Black will defend immediate material loss. Now, the difference is that, although material is still even, White will win at least the exchange. In order to force that, Black has to weaken his position more with c6...>

Very accurate.

Dec-29-08  ZUGZWANG67: In fact, that' s the kind of situation where one is so sure to have the final (and quick!) blast that one forgets the adversary' s defensive ressources...

See <TheaN>' s comments...

Dec-29-08
Premium Chessgames Member
  johnlspouge: Monday (Very Easy):

H Karner vs Mass, 1971 (9.?)

White to play and win.

Material: Even. The Black Kg8 has 1 legal move. Because the White Bg2 is on the a8-h1 diagonal as Bb7 and Ra8, obscured by Nf3, White has a discovered attack against Bg7, which is loose. The discovered attack can also threaten mate.

Candidates (9.): Ng5

9.Ng5 (threatening 10.Qxh7#)

10Bxg5 [else, 11.Bxb7 12.Bxa8 wins a R]

11.Bxb7 (threatening 11Bxa8)

To avoid losing Ra8, Black must move Nb8-a6 or Nb8-c6, where White captures it. White wins a B.

Dec-29-08  TheChessGuy: This is when it pays to remember to look for tactics. White wins too much material to continue.
Dec-29-08
Premium Chessgames Member
  kevin86: 9 ♘g5-simple as pie. White threatens mate as well as the bishop and rook;once the bishop is captured,the rook is a dead duck.
Dec-29-08  starkidaway: <TheaN: <9....Bxg5 10.Bxb7> not the maybe more obvious 10.Bxg5? Qc8! (Qxg5? 11.Bxb7 ) and Black will defend immediate material loss. Now, the difference is that, although material is still even, White will win at least the exchange. In order to force that, Black has to weaken his position more with c6...>

Actually, this is analysis is incorrect; white wins a whole piece.

9.Ng5 BxN 10.Bxb7 c6 (what else; 10....Bxc1 11.RxB c6 12.BxR Qc7 13.d5! Nc4 (14...Ne5 15.Qe4 f5 16.Qg2 works for white as well) 14.Qf3 Na6 (or Nd7) 15.Bc6 and white is a whole rook up.

Of course, black could always play 10...Na6 11.BxN and he anly loses a knight instead of a whole castle.

Dec-29-08  gallard: Too simple even for a Monday!
Dec-29-08
Premium Chessgames Member
  playground player: Easy? What was so easy about this? It's Monday, so that means a Queen sacrifice... Only this time it doesn't! Was I the only one who wasted a lot of time looking for a Queen sac that would work?
Dec-29-08  A.G. Argent: <playground player><Was I the only one...looking for a Queen sac that would work?> Negative, PP, you wasn't. The very-easy-Monday situations usually ARE a Queen sac/death blow or the like, ain't they. But don't hurt to be kept on one's toes, I s'pose. Do I sense a theme for the week going into a new year?
Dec-29-08  Patriot: <playground player: Easy? What was so easy about this? It's Monday, so that means a Queen sacrifice... Only this time it doesn't! Was I the only one who wasted a lot of time looking for a Queen sac that would work?>

I would bet that a lot of us considered 9.Qxh7+ very briefly, perhaps subconsciously because it is the most forcing move. But after 9...Kxh7, where's the attack that you spent so much time on?

Dec-29-08  Jesspatrick: Just keep repeating LPDO. LPDO. LPDO.

Loose Pieces Drop Off.

Dec-29-08
Premium Chessgames Member
  johnlspouge: < <starkidaway> wrote: <TheaN: [snip] Now, the difference is that, although material is still even, White will win at least the exchange. [snip] >

Actually, this is analysis is incorrect; white wins a whole piece. >

Although <TheaN> hardly needs to defend his analysis, I will save him the trouble, simply because his posts are often quite useful to me: if White wins a whole piece, he wins "at least the exchange".

Among those of us who prefer to post with some logical finality, a statement like "White will win at least the exchange" is a shorthand for "it's now an obvious win; let's move on and examine another variation".

Dec-29-08  paladin at large: The position here is similar to the Monticelli trap, a trap which, however, does not necessarily lead to a loss for black. Here is the original Monticelli trap:

M Monticelli vs Prokes, 1926

Dec-29-08  TheaN: Looks like I made quite a fuss with the 10.Bxg5 Qc8 line... :). Thanks for all the references.

<starkidaway: Actually, this is analysis is incorrect; white wins a whole piece.

*analysis*>

As I pointed out later in my analysis (even only two moves long), I mentioned that Black gets a hard time even winning ♗a8 after that same Bishop picks up the full Rook. If he cannot be captured ultimately, Black should concede a full piece with 10....Na6 as Crafty advises, but might as well try 10....c6. What I tried to say was that Black's position is materialistically (what a frikkin word o.O) inferior beyond the simple exchange. And IF I cannot safe the clergy I'll just sac it for another pawn and crush a fruitless Black position.

But, kudos to you, the analysis, at least the one I see for 10....Bxc1, is accurate. But I think I'm missing the long term analysis for 10....c6. Personally, I think it's probably 11.Bxg5 Qxg5 12.Bxa8 followed by an almost immediate (13.)d5! which is a good find.

Dec-29-08  fyad reject: stop complaining about monday puzzles being too easy, they are supposed to be easy
Dec-29-08  Fish55: <OhioChessFan> 7...d6, unlike 7...Ne4 or 7...d5, makes it easier for white to gain a large space advantage by playing e4.
Dec-29-08  MostlyAverageJoe: <xrt999> Good decision. I guess you know what I mean.
Dec-31-08
Premium Chessgames Member
  patzer2: For the Monday Dec 29, 2008 puzzle solution, White springs a winning double attack with 9. Ng5! Faced with the dual threats of 10. Qxh7# and 10. Bxb7 , Black resigns.
Aug-25-09  WhiteRook48: very amusing
Oct-14-11
Premium Chessgames Member
  whiteshark: a Mass of errors
Oct-26-11  sfm: 9.Ng5. Weapon of Mass Destruction
Nov-03-14
Premium Chessgames Member
  MissScarlett: <Instant Karner>
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