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Boris Savchenko vs Alexey Kostin
Russian Championship Higher League (2007), Krasnoyarsk RUS, rd 2, Sep-04
Sicilian Defense: Kan. Knight Variation (B43)  ·  1-0

ANALYSIS [x]

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Kibitzer's Corner
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May-23-17
Premium Chessgames Member
  thegoodanarchist: <chessgames.com: We were considering 22.f5! to use instead as the puzzle, but decided that 22.Qg6! was the prettier move.>

Too hard for a Tuesday puzzle.

May-23-17
Premium Chessgames Member
  WorstPlayerEver: Not if you know Minesweeper 😊
May-23-17  FrogC: I found this one hard because I was looking at checks and captures, and none of them seemed to work. Then I stopped consciously looking for anything and suddenly saw Qg6.
May-23-17  Rama: I tried to do something with the N and R but they can't do it alone. So I looked at Q-moves and saw Qg6 almost right away. At first I did not see that it works if captured or not, because of the sneaky opening of the 7th rank enabling the Arabian mate. Wasn't hard for me.
May-23-17  saturn2: I wonder if there are players who see the solution in a flash (like it was said of Capablanca) and not like me after a lot of mental effort.

In the opening the pawn b2 seemed poisend. White got the outpost f6 for that pawn. A very good bargain.

I once read in the Sicilian one should beware of manouvering the light pieces before completing development. Black did not observe this in the game.

May-23-17  Iwer Sonsch: It's not Monday, so the queen sac actually took me a while to find.

26.Qg6!

A) 26...fxg6 27.Ne6+ Kg8 28.Rg7#

B) 26...Rg8 or 26...Rh7 27.Nh7#

C) anything else 27.Qg7#.

Hard until you see it.

May-23-17
Premium Chessgames Member
  WorstPlayerEver: @saturn2

I guess you see something or you don't. I was looking for f7 to collapse but it didn't seem to happen. Then I saw the pattern Qg7x.
Qg6 actually threats it. From there it was not hard to see the combination. Took me about 30, 40 seconds.

22. f5 is much harder to find.

May-23-17
Premium Chessgames Member
  drollere: i did not find the move in this one.
May-23-17
Premium Chessgames Member
  WorstPlayerEver: Chess is geometry. Geometry is a science. And science is underrated.

And Einstein was a clown; no one leaves this planet alive. The end ☺

May-23-17
Premium Chessgames Member
  Once: This is one of those "second iteration" puzzles. What's a second iteration puzzle? I'm glad you asked ...

First of all, we can tell that the position is juicy. We've got pieces clustered around the enemy king. The hairs on the back of your neck are standing up. The spidey sense is tingling. The background music is ramping up as if something exciting is going to happen.

Can you feel it? There are tactics in the air.

So first we look at the "obvious" moves. As Purdy says we look for moves that smite. Checks and captures. I count six possible checks - two each by the white queen, knight and rook. Can we exchange on f7 or h6? Give a knight check on e6? Do any of these do anything? Nope.

Hmm. None of our first iteration moves work. At this point we might be tempted to give up and play something sensible and developy. But the position is still juicy. We should keep on looking.

So now we need to look for second iteration moves. These are moves which threaten to do something. We might think about getting the other rook into the action. Or maybe we could recycle the knight to a better square. Or perhaps we can find an entry square for the queen.

26. Qg6 has to be looked at because it threatens Qg7#. Okay, it looks as if it gives the queen away. But in a tactic-juicy position we shouldn't be afraid to dump her majesty. And the rest you know.

To paraphrase Sherlock Holmes when we have eliminated obvious moves, whatever remains - however ludicrous it may first appear - should be examined next.

May-23-17  Iwer Sonsch: <Once> somebody mentioned to miss the awesome comments by some long-known kibitzers like YouRang.

That kibitzer was right.

May-23-17  Ariogermano: YouRang , where are you ?
May-23-17  Marmot PFL: wasn't timing but i think about 2 mins to solve this (Qg6). really good players or machines would find it instantly.
May-23-17  et1: took me a while but got it
May-23-17  rozzatu: Easy but difficult!
May-23-17
Premium Chessgames Member
  Peligroso Patzer: Excellent post by <Once>.

This one took longer to solve than usual for Tuesday. As explained in more detail by <Once>, the longer time necessary (at least for me) to find the solution was probably because the key Q sac did not involve a check or a capture (although it did involve a very strong immediate threat - mate in one; that threat [27. Qg7#] could be prevented by taking the Q [26. ... fxg6], but doing so allows mate in two beginning 27. Ne6+).

Ultimately, the solution is based on the weakness of Black's g7 square and the overworked pawn on f7.

May-23-17  Iwer Sonsch: Perfect high-quality Tuesday. Unlike last week.
May-23-17
Premium Chessgames Member
  paulalbert: Easy, but perhaps a little less intuitive and more subtle than the usual Tuesday. As with some others, my intuitive reaction had me looking initially at the right idea but the wrong initial move until I saw that Qg6 made it all work.
May-23-17  swclark25: Kept trying to get Ne6+ to work, but in the end went with <gofer's son...go on, click on it!!>

Seemed a Tough Tues to me...

May-23-17  GoldenKnight: They had a similar theme a week or two ago where the Q stops just short of a pawn and allows herself to be captured. Resignation was proper then as now.
May-23-17
Premium Chessgames Member
  morfishine: Took me way too long

*****

May-23-17  dark.horse: It requires a little imagination: "What is the ideal square for the queen? Why g7, of course. How can I get my queen there? Ok, if I move my queen to g6 what can Black do about it?" It is an impressive-looking move; it is counter-intuitive to put the queen en prise like that.
May-23-17  FlashinthePan: Definitely hard for a Tuesday. Took me a lot of time cause I was looking for a more obvious move, which can be spotted at a glance. Had it been a Thursday (which I think is this puzzle's real level), I'm sure I'd have solved it more easily.
May-24-17  Moszkowski012273: 24.Ndxe6+... is stronger.
May-24-17  Ninja702: Lovely puzzle. I did not find it 😫
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