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Igor V Glek vs Zigurds Fridrikhovich Lanka
"What the Glek!" (game of the day Aug-24-2019)
Linz (1997), Linz AUT, rd 7, May-23
King's Indian Defense: Smyslov Variation (E61)  ·  1-0
ANALYSIS [x]

FEN COPIED

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Kibitzer's Corner
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Sep-27-08  Woody Wood Pusher: <once>, <stukkenjager> <MAJ> Thank You for the analysis!

Cheers.

Sep-27-08
Premium Chessgames Member
  dzechiel: White to move (29?). Material even. "Very Difficult."

I haven't checked this out completely, but my first instinct is to remove the knight of f5 with one of the rooks. It sure looks like it should be

29 R1xf5

Should black try to capture the other rook with 29...Bxf6 then 30 Nxf6 leans on the queen and gives us time to save the remaining rook (we could also probably have played 29...Rxf6, as both leave white up two pieces for a rook). So, I suppose black will play

29...gxf5 30 Qh5

Now the threat is 31 Rxh6+ Bxh6 (31...Kg8 32 Qg6 and 33 Qh7#) 32 Qxh6+ Kg8 33 Nf6#. So, I think black needs to get rid of the knight

30...fxe4 31 Bh4

I actually don't think this is the correct line, but I can't find anything better. I have started this problem three times, with times 1 and 3 taking me down this path. Perhaps I got the key move wrong.

In any case, it's too late to continue working on this, so I'm going to post now.

Time to check.

=====

Nuts. I moved the bishop to the wrong square. A little more effort would have gotten this one right. <sigh>

Sep-27-08  newzild: 29.R1xg5, and now:

A)

29...Bxf6
30.Rxf6 wins two minor pieces for a rook.

B)

29...gf
30.Qh5

Threat: 31.Rxh6+ Kg8 32.Rh8+! Bxh8 33.Qg6+ Bg7 34.Nf6+ Kh8 35.Qh7++

31...fe

and now it's tough to find a mate as 32.Rxf6 no longer works. The only move I can see is...

32.Bf4

The rook is obviously immune, and 33.Bxh6 is threatened. I can't see an adequate defense for black.

I haven't analysed it to a mate, and I might have missed something.

Time to check...

Sep-27-08  newzild: ...well, I didn't analyse 32..Kh7, but I'm giving myself the point because the position after 31.Bf4 is clearly winning, and I think I would have played this over the board.

5/5 this week. Yesterday's was the toughest...

Sep-27-08  SimSim314: I don't get it. Why they continue give us puzzles that are not real puzzles. This is not forced end with mate, actually it was pretty hard to find continuation that will bring white to superior material.

In this game 31..Kh7?? is a huge blunder, let's see some computer analysis on 31...:

31...Rb6!! and now if white recapture 32. RxB6 Qd8! 33.Rxh6 Kg8 34. Rh7 Qd4+ 35. Kh1 Qxc4 36. Rxg7 Kxg7 37. Bh6+ Kh7 38. Bxf8 (=) draws.

The strongest continuation:
32. Bxh6 Qxe5! (if 33.Qxe5 Bxf6 draws) 33. Bxg7 Kxg7 34. Qxe5 Rxf6 35. Bxb5 and white are piece up.

Sep-27-08
Premium Chessgames Member
  Once: <SimSim314>

Looks like a puzzle to me. After 31. Rb6? Fritz 11 evaluates the position as +8 (and rising the longer I let the engine run). The strongest line seems to be taking the rook, with this as one possible continuation:

31... Rb6 32. Rxb6 Qd8 33. Rxh6+ Kg8 34. Be3 (and here Fritz announces mate in 16, so starts throwing material away to stave off disaster)

34...Qd3 (Other moves such as Qa5 and Qc7 apparently get mated in 15 rather than 16) 35. Bxd3 exd3 36. Qf5 Rd8 37. Qh7+ Kf8 38. Bxc5+ Ke8 39. Qg8+ Bf8 40. Qxf8+ Kd7 41. Qe7+ Kc8 42. Rc6+ Kb8 43. Qxd8+ Kb7 44. Qc8# 1-0

Fritz reckons that 32. Bxh6 is the second strongest move, with an eval of +7.25.

So if it walks like a duck and quacks like a duck, it's a duck.

And by the same reasoning, as far as I am concerned this is a puzzle.

Sep-27-08
Premium Chessgames Member
  whiteshark: Again, I lacked the bite: After 29.R1xf5 gxf5 30.Qh5 fxe4 I couldn't realise that black's defense is already ripe for the final attack.
Sep-27-08  TrueBlue: hmm, difficult one.
There are several moves I like:

Rxf5 (one of the two rooks) and e6

nothing force, but I like:

29. e6 Nxg3 30. hxg3 fxe6 31. Rxf8+ Bxf8 32. Nf6 Qe7
33. Nd7 Nd6 34. Nxb8 Nxc4

Sep-27-08  TrueBlue: lol, nice combo, Rxf5 was my first choice, but didn't see Qh5 :(
Sep-27-08
Premium Chessgames Member
  patzer2: For today's Saturday puzzle, White plays the exchange sacrifice 19. R1xf5!! to decisively weaken his opponent's castled position. Forced to accept the sham sacrifice in order to avoid obviously decisive material loss, Black succumbs to a brilliant mating attack.

Here's a breakout:

<29. R1xf5!! gxf5>

If 29... Bxf6, then White wins with 30. Rxf6 when play could continue 30...Nd4 (30... Kg7 31. e6 Rd8 32. Qb3 Nd4 33. Be5 Nxb3 34. Rxf7+ Kg8 35. Nf6+ Kh8 36. Rh7#) 31. Nd6 Qd7 32. Qd2 Kh7 33. Bxf7 Qg4 34. Bxg6+ Kg8 35. Nf7 Nf5 36. Bxf5 Qg7 37. Nxh6+ Kh8 38. Ng4 Rbe8 39. Rh6+ Kg8 40. Nf6+ Kf7 41. Qd5+ Ke7 42. Qd7#.

<30. Qh5! fxe4 31. Bf4! Kh7>

If 31... Bxf6, then it's mate-in-three after 32. Qxh6+ Kg8 33. exf6 any 34. Qg7#.

<32. Bxh6 Rh8 33. Bxf7 1-0>

Black resigns in lieu of White's unstoppable mate threats.

Sep-27-08
Premium Chessgames Member
  Once: From the position after black's 32nd, white actually has a choice of at least three forced mates.


click for larger view

33. Qf5+ (now it's mate in 3) Kg8 34. Rxf7 Qxf7 35. Qxf7+ Kh7 36. Qxg7# 1-0

33. Be3+ (mate in 4) Kg8 34. Bxf7+ Kf8 35. Bxe8+ Ke7 36. Qf7+ Kd8 37. Qd7#

33. Bxf7 (mate in 5) Qxf7 34. Rxf7 Rb7 35. Bxg7+ Kg8 36. Qg6 Rxf7 37. Bh6+ Rg7 38.Qxg7#

What fun ... for white.

Sep-27-08
Premium Chessgames Member
  TheTamale: The worst thing about today's puzzle is that some guy named Glek can see something OTB that I can't figure out with all the time in the world at my disposal.
Sep-27-08
Premium Chessgames Member
  kevin86: In exchange for allowing the adverse pawn to gobble up rook and knight,white's queen can penetrate the black defenses and set up an attack with the remaining forces.
Sep-27-08  Marmot PFL: I was a little surprised by the difficulty rating. All white's pieces are targeting the black king, and Rf1xf5 destroys the pawn structure and allows Qh5 with no risk for white. The rest was a massacre and didn't last long.
Sep-27-08  beginner64: <Woody Wood Pusher> Thanks for pushing for the analysis of Rxh6 line. It had felt natural to me when I posted it, but without the analysis, couldn't have been sure.

<Once>Thanks for the silicon!

Sep-27-08  Inf: Im VERY proud to say that for the 1st time i got a saturday!! YAY for me!! Someone else please yay for me too!! :)

To be honest i saw 95% of the combo. Saw the 1st move within 10 seconds. I missed the last white move of the bishop.

Sep-27-08
Premium Chessgames Member
  Jimfromprovidence: This was a line put forward by <Once>:

31. Rxh6+ Bxh6 32. Qxh6+ Kg8 33. e6 Qe7 34. Bxb8 f6 35. Bg3 e3 36. Qg6+ Kh8 37. Qh5+ Kg8 38. Qg4+ Kh8 39 Bxb5.

The position is worth mentioning after 36 Qg6+, below.


click for larger view

Notice that black cannot play 36...Qg7?? because of 37 e7+!, with mate in two.

Sep-27-08  kirchhoff: Hey <Inf>. Yay!! This was a hard one--at least for me, I didn't get it--and anyone who got 95% of it deserves a pat on the back.
Sep-27-08  lost in space: My impression was, that this was a unusual Saturday puzzle. If you got the idea you find your way through to mate with very few alternatives for Black (at least I haven't found them)

29. R1xf5 gxf5
I don't see any other good move for Black

30. Qh5 fxe4
I dont see any other good move for Black

31. Bf4! (the! key move) Rd8
or 31...Kh7 32. Rxh6+ Bxh6 33. Qxh6+ Kg8 34. Qg6+ Kh8 35. Qh5+ Kg8 36. Bh6 Rb6 37. Qg5+ Rg6 38. Qxg6+ Kh8 39. Qg7#

32. Bxh6 Rd1+ 33. Bf1 Rxf1+ 34. Kxf1 Nd4 35. Bxg7+ Kxg7 36. Qg5 Kh8 37. Rh6#

Time to check

Sep-27-08  Patriot: After white sees 29.R1xf5 gxf5 30.Qh5 fxe4 31.Rxh6+ Bxh6 32.Qxh6+, he really doesn't have anything to lose since he at least has a perpetual check. At that point white could've stopped analyzing R1xf5 and looked at a few other critical candidates before deciding that his chances are best with R1xf5. So it was probably not necessary for Glek to analyze it all the way through OTB.
Sep-27-08  Whiteresigns: <SimSim314: I don't get it. Why they continue give us puzzles that are not real puzzles. This is not forced end with mate, actually it was pretty hard to find continuation that will bring white to superior material.>

So let me get this straight. You find it frustrating being asked to find the best move even if it doesn't lead to immediate forced mate?

You must have a torrid time OTB : /

Sep-27-08
Premium Chessgames Member
  sfm: <Whiteresigns:
...
You must have a torrid time OTB : /
>

LOL!
Sep-27-08
Premium Chessgames Member
  johnlspouge: Friday (Difficult): Glek vs Z Lanka, 1997 (29.?)

White to play and win.

Material: B for N. The Black Kh8 has 2 legal moves. The Black K-side has dark square weaknesses, covered mainly by Bg7. White has a battery Rf1 and Rf6 obscured by Nf5. The White Bg3 supports Pe5, which highlights the dark-square weakness at f6. The White Bc4 attacks Pf7 and the square g8 behind. The White Qd1 has an open file. The Qd1 and Bg3 are somewhat passive.

Candidates (29.): e6

I have been traveling and have no time, but I would have gone to analyze 29.e6 first.

Sep-28-08
Premium Chessgames Member
  johnlspouge: I meant Saturday (Very Difficult), of course.
Aug-24-19
Premium Chessgames Member
  thegoodanarchist: If there were a player named "Gleep" the GOTD title could be <What the Gleep!>
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