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Piotr Delekta vs Efim Geller
Capelle la Grande (1992), Cappelle-la-Grande FRA
Bishop's Opening: Vienna Hybrid (C28)  ·  0-1
ANALYSIS [x]

FEN COPIED

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Given 22 times; par: 24 [what's this?]

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 3 OF 3 ·  Later Kibitzing>
Jun-27-18  NBZ: Another puzzle that is reasonably easy to solve when posed as a puzzle, but is considerably harder to see at the board.

Consider what White must have been thinking when he played 17. Nf5: "Black played Re6 and is threatening Qxg3. I will play Nf5, not fearing Rg6 Qe2 when my knight is nicely placed on f5. I am happy if he plays g6 because then I can just go back with Ng3 and though I have wasted a move the move g6 blocks his rook from joining the attack."

He must have been thunderstruck when Qxg3 appeared at the board.

I think partly what makes this hard is that after 17. ... g6, there is the "feeling" that it will take a long time to ever bring the rook into play on the kingside: first the queen has to move and then the g-pawn. And I suspect White saw lines such as 18. ... Qh4 19. a3 g5 20. Nf5! and was reassured that he was safe.

Jun-27-18  Granny O Doul: The only possible explanation I see for 10. Bxf6 is that White feared Black might play ...Ke7 so as to take back with the king.
Jun-27-18
Premium Chessgames Member
  Dionysius1: Even 18.g4 defends with the double threat to the ♖ and ♕ if 18...gxf5 and if not 18...gxf5 then 19.♘g3
Jun-27-18  stacase: What < NBZ> said.
Jun-27-18
Premium Chessgames Member
  Whitehat1963: Found the queen sac pretty quickly, as there are no other forcing moves to consider. Wednesdays are usually harder for me. Tomorrow won’t be so easy.
Jun-27-18
Premium Chessgames Member
  takchess: Qxn followed by gpawn clearance and Rook to h file.unstoppable. I think.
Jun-27-18
Premium Chessgames Member
  malt: At first glance 18...Q:g3,
Then went for 18...h5, looking back, if that g6 pawn weren't there, then the penny dropped with a clang.

18...Q:g3 19.h3 (19.hg3 g5! )

Jun-27-18  zb2cr: Managed to see this one. The key is ridding your thinking of the idead that it will take a lot of moves to get the Rook maneuvered to the h-file. I believe <NBZ> stated this as well.
Jun-27-18
Premium Chessgames Member
  Richard Taylor: I saw this. The only thing is that in a real game I would spend a long time making absolutely sure there was no defence!

But this theme is fairly common...

Beautiful idea though.

Jun-27-18
Premium Chessgames Member
  patzer2: For today's Tuesday puzzle, 18...Qxg3! -+ wins a piece with the threat of 19. hxg3 g5 -+ forcing mate-in-three.

Instead of 19. hxg3, which leads to a quick mate after 19...g5 -+, White can decline the Queen capture, and continue to play a piece down. One possibility is 18...Qxg3! 19. Qe2 Qh4 -+ (-4.73 @ 31 ply, Stockfish 8). However, against strong opposition this is hopelessly lost.

P.S.: White's clear losing move was 18. Ng3??, allowing 18...Qxg3! -+. Instead, 18. g4 makes a fight of it as the Knight is untouchable due to a skewer threat against the Queen (e.g. 18...gxf5? 19. gxf5 Kh8 20. fxe6 ⩲ to ± or 18...gxf5 19. gxf5 Re7? 20. Rg1! Bxg1 21. Rxg1 +-). For Black to gain a strong advantage after 18. g4, the must find move is 18. g4 h5! ∓ (-1.10 @ 31 ply, Stockfish 8). Although 18. g4 h5! might be lost against near perfect play, White can still make a good fight of it for some practical drawing chances.

A move earlier, White can improve over 17. Nf5? by regrouping with 17. Ne2 ⩱ (-0.38 @ 30 ply, Stockfish 8).

Two moves earlier, White could have held it near level by playing 16. Qd2 = (-0.11 @ 29 ply, Stockfish 8) instead of 16. Ng3?! Qg5! ⩱ to ∓.

Jun-27-18  ndg2: The Karpov game someone mentioned previously: Karpov vs Taimanov, 1977

Again, the doubled g-pawn prevents any rescue

Jun-27-18
Premium Chessgames Member
  morfishine: Delektable Queen sac by Geller
Jun-27-18  Cheapo by the Dozen: Super easy to see. One just checks and rechecks because it's so hard to believe there isn't any defense.
Jun-27-18  mel gibson: Gee wizz - I didn't see that Black gains a free Knight and a file for its Rook.
Jun-27-18  An Engliishman: Good morning: <ChessHigherCat> I believe this December will be 12 years.
Jun-27-18  WorstPlayerEver: Take my knight away
Jun-27-18
Premium Chessgames Member
  chrisowen: Plummer vints pinas qg3on goods vides dinks its a givehood 18Qxg3 coffs visage bongs ovids golds 5 coins keyin winon vints vowus vimus budus mates haves grabs vamus keyin plummer rupture keyus plums mocks cobin keyin dearth tadin hatis thins wigsy futon links keyus kumquat quick keyins inara keyas keynub vides quandry nozes keyin zoeon joves zevon it's vasts ducat weeps keyin keyon finer rules it's vasts keyus hatin cupin wests funny keyin larks watches keyin flyin keyus punys watchful yenus links faculty hewns whens penus whyin fancy keyin letups facts newly vivas flavs avuncular plushy pinas paunchy flews wests qg3on goods vints haves plummer rupture rinks keyus plums mocks cobon links keyin badas datas tadin vivas flavs dearth hatsy thins wigsy goofs futon links keyin keyus kumquat quick keyins inara keyas keynub vides quandry quick nozes keyin zoeon joves zevon it's vasts ducat weeps;

keyin keyon finer rules keyin
vivas flavs dinks its a:

givehood 18Qg3 coffs visage bongs ovids golds 5 coins keyin winon vints vowus vimus budus mates haves boggy gobin keyin boogie goods vowus vimus bigon vints keyin grobs keyon kinds qg3on goods gifts grogs keyon kinds gills golds glint grows vowus vimus avons ghost clunge gecko lowus links vowus vimus goofs gifts dinks its a givehung 18.Ng3 visage aints glibs golds 5 coins keyin winon vints vowus vimus dinks its a hivehood 18.h4 visage aints glibs hoist keyin 1 2 it lowus links vowus vimus cogin vints foggy figgy keyins gongs gigon vints vowus vimus corgies vides podium vints dogin:

keyin pogos dipon goods piggy
gamble kends nowin vints;

famine vowus vimus keyin winch fonds hustle keyin pidos bidon links rimon goods costs keyin fission vowus vimus oilys dones keyes hinds hoofs keyin chiffon hocks keyin links hicks flight hogin vowus vimus goofs gifts keyin crick vowus vimus bocks bricks keyin hicks cobin vowus vimus ovids click keyins umsus ghost ehson crock either keyin plummer funny vints pinas qg3on goods;

Jun-27-18
Premium Chessgames Member
  Marmot PFL: Q sac and g6, not too difficult but still very cool.
Jun-27-18
Premium Chessgames Member
  Breunor: I'm with NBZ. I found this right away; but if somebody doesn't tell me 'Black to play and win' I know I wouldn't have seen this in a real game.
Jun-27-18  BOSTER: PUSH 15.f3 opening the diagonal for black bishop was a mistake. But if you wanted to move f2 pawn, was better to move to f4.
Jun-27-18
Premium Chessgames Member
  Marmot PFL: <I'm with NBZ. I found this right away; but if somebody doesn't tell me 'Black to play and win' I know I wouldn't have seen this in a real game.>

In a real game I'm sure you would find it after playing 15...Re6, but white missed the point of that move, otherwise I think he would have played 16 f4 which gets his Q and Rf1 into the game.

Jun-27-18
Premium Chessgames Member
  CHESSTTCAMPS: Material is "even" but black's bishop is much stronger than the white knight in this situation, controlling dark squares in white's weakened castled position. Black only needs to expose the white king along the file:

18... Qxg3! 19.hxg3 (f4 Qxd3 leaves white a piece down; alternatively b4 ab can only delay the same consequences for one additional move) g5 20.Qxd6 Rxd6 21.Rf2 Bxf2 and 22... Rxh6# follows - a corridor mate, nice or nasty depending on your perspective.

Jun-27-18
Premium Chessgames Member
  Patriot: Seeing the immobile white king, it was then just a matter of opening the h-file and seeing if a rook was in position. So, <18...Qxg3 19.hxg3 g5> and mate is unstoppable.

I like problems like this much more than the "insane" problems because these are much more logical to me. Many of the insane problems are logical but the combinations are usually based on elements more subtle. Since I can't calculate like a machine I'm not worried about positions that follow no logic where combinations cannot be deduced much less sensed.

Jun-27-18
Premium Chessgames Member
  lost in space: Got it quickly
Jun-27-18
Premium Chessgames Member
  DrGridlock: Interesting how everything fits together on this one. I got the idea of Qxg3 followed by advancing black's g-pawn to set up the rook check on the h-file. Looking for different defenses for white, I thought that Qd2 might have been the saving resource. The queen gives white coverage on f2, allowing the rook to potentially block the bishop on the diagonal, and covers h6, stopping black's rook.

Took me a while to figure out that after g5, black's pawn would be blocking white's queen on the diagonal!

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