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Igor V Glek vs Zigurds 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
< Earlier Kibitzing  · PAGE 3 OF 3 ·  Later Kibitzing>
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  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!>
May-28-21  1g1yy: I tried the first move but gave up and went looking elsewhere. This was too deep for me.
May-28-21
Premium Chessgames Member
  An Englishman: Good Evening: A little surprised to have solved this, but it required a lot of thinking. Mayhaps more thinking would help with the weekend puzzles (which are almost upon us--egad).
May-28-21  Walter Glattke: A) 29.R6xf5 gxf5 30.Rxf5 Rb7 31.Qd5
B) 30.-Nd4 31.Rh5 Rxb2 32.Nf6 Bxf6 33.Rxh6+ Kg7 34.exf6+ Kxh6 35.fxe7 Re8 36.Qc1+ or 32.-Qe7 33.Qd3 C) 29.R1xf5 gxf5 30.Qh5 fxe4 31.Bf4 ++- 29.-Bxf6 30.Nxf6 Qe7 31.Qd3
May-28-21
Premium Chessgames Member
  Messiah: What a terrible pun.
May-28-21  mel gibson: Stockfish 13 only follows the first ply:

29. R1xf5

(29. R1xf5 (♖f1xf5 ♕e8-d8 ♖f5-f1 ♕d8xd1
♖f1xd1 ♘b5-d4 ♖f6-f2 ♖b8-b4 ♘e4-d6 f7-f5 ♖d1-e1 g6-g5 ♖f2-d2 ♖b4-b6 b2-b3 f5-f4 ♗g3-f2 ♘d4xb3 ♖d2-b2 ♖f8-b8 ♘d6-f7+ ♔h8-h7 ♖e1-b1 ♔h7-g6 ♖b2xb3 ♖b6xb3 ♖b1xb3 ♖b8xb3 ♗c4xb3 c5-c4 ♗b3xc4 ♗g7-f8 ♗f2-d4 h6-h5 ♘f7-d6 g5-g4 ♗c4-d3+ ♔g6-g7 ♗d3-e4 ♔g7-h6 ♘d6-f7+ ♔h6-g7 e5-e6+ ♔g7-g8 ♘f7-e5 ♔g8-g7 ♔g1-f2) +6.58/36 102)

score for White +6.58 depth 36.

But forcing Black to take the Rook
as per the actual game:

Stockfish 13 says
29...gxf5
30. Qh5

(♕d1-h5 f5xe4 ♖f6xh6+ ♗g7xh6 ♕h5xh6+
♔h8-g8 e5-e6 ♕e8-e7 ♗g3xb8 e4-e3 ♗b8-e5 f7-f6 ♕h6-g6+ ♔g8-h8 ♕g6-h5+ ♔h8-g7 ♗e5-f4 ♖f8-a8 ♕h5-g4+ ♔g7-h8 ♗c4xb5 ♖a8-a1+ ♗b5-f1 e3-e2 ♕g4xe2 c5-c4 ♕e2-h5+ ♔h8-g8 ♗f4-e3 ♕e7xe6 ♕h5-g6+ ♔g8-h8 ♗e3-d4 ♖a1-a6 b2-b3 ♖a6-c6 ♗f1xc4 ♕e6-e1+ ♗c4-f1 ♕e1-d2 ♗d4xf6+ ♖c6xf6 ♕g6xf6+ ♔h8-g8 ♕f6-e6+ ♔g8-g7 ♕e6-e7+ ♔g7-g6 ♕e7-c5 ♔g6-f7 b3-b4 ♔f7-e6 b4-b5 ♕d2-d6 ♗f1-c4+ ♔e6-e7 ♕c5xd6+ ♔e7xd6) +9.88/40 78)

score for White +9.88 depth 40

May-28-21  Brenin: I got the first three moves, including the possibility of a later e6, though I didn't check all the available Black defences. I don't understand the Stockfish comment "better is 30 Rxf5 ...", as the game line 30 Qh5 looks much stronger to me.
May-28-21  Walter Glattke: Too many stockfish comments with different prognosis - several win variations
May-28-21
Premium Chessgames Member
  chrisowen: Nil keys i R1xf5 got a bluffy frazzled its log arrive site keys nil par rap jay its with blimps keys limb quiff keys i forgot gov i deity dizzy evo keys crick junkyard its heart op honey bile keys mads its whicker fugazi feels like fought keys i add diminish blubbs vice its jedi axiomed its cinch keys messrs premium R1xf5 edict;
May-28-21
Premium Chessgames Member
  chrisowen: Effect as vigilante z key i flip flop R1xf3 eddy no?
May-28-21  malt: Missed it today, went for 29.e6
White has a very good position,
Thought 28...Nf5 was a not good move, 28...B:f6 29.N:f6 Qd8 30.Qc1 Kg7 31.Bh4 Qc7 32.Ng4 g5

(32...Rh8 33.Bf6+ )

33.B:g5 f5 34.B:h6+ Kh8 35.B:f8

May-28-21
Premium Chessgames Member
  chrisowen: Yes light in ascendancy no?
May-28-21
Premium Chessgames Member
  chrisowen: Dont over do it no? Gotcha
May-28-21
Premium Chessgames Member
  drollere: i finally decided that the N at f5 had to go, primarily to prepare Qh5. although the pawn shove e6 seemed very interesting. but i couldn't work out the variations. and i would have played R6xf5.
May-28-21
Premium Chessgames Member
  agb2002:

White has the bishop pair for a bishop and a knight.

White can attack the black king with six pieces. This suggests 29.R1xf5 gxf5 (29... Bxf6 30.Rxf6 wins material with an overwhelming position) 30.Qh5:

A) 30... fxe4 31.Bf4

A.1) 31... Bxf6 32.Qxh6+ Kg8 33.exf6 wins.

A.2) 31... Kh7 32.Bxh6 Rh8 (32... Bxh6 33.Qxh6+ Kg8 34.Rg6#; 32... Bxf6 33.Bg5+ followed by 34.Bxf6 and mate next) 33.Bxg7+ Kxg7 34.Rxf7+ Qxf7 35.Qxf7+ Kh6 36.Qf6+ Kh7 (36... Kh5 37.Be2#) 37.Bf7 wins decisive material.

A.3) 31... Kg8 32.Rg6 (threatens 33.Rxg7+ Kxg7 34.Bxh6+ and mate soon) 32... Rb6 33.Rxb6 Nd4 34.Bxh6 looks winning.

A.4) 31... Nc7 32.Bxh6 Ne6 (32... Bxf6 33.Bg5+ and mate soon) 33.Bxg7+ Kxg7 34.Qg4+ Kh7 (34... Kh8 35.Rh6#) 35.Qf5+ Kg8 36.Rh6 and mate next.

B) 30... Bxf6 31.Qxh6+ Kg8 32.Nxf6#.

C) 30... Nc7 31.Rxh6+ Kg8 (31... Bxh6 32.Qxh6+ Kg8 33.Ng5 and mate next) 32.Rh8+ Bxh8 33.Ng5 and mate next.

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