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Leonid Alexandrovich Shamkovich vs Vladimir Borisovich Tukmakov
Grandmasters-Young Masters (1970), Sochi URS, Oct-??
Sicilian Defense: Closed Variation (B23)  ·  1-0

ANALYSIS [x]

FEN COPIED

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Given 21 times; par: 54 [what's this?]

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 2 OF 3 ·  Later Kibitzing>
Feb-05-08  BishopofBlunder: I feel stupid when I don't solve a Tuesday puzzle.

I feel stupid today.

Feb-05-08  zooter: <However, the moves are not that difficult to spot, as long as one notices that white K has to avoid the g1-a7 and h2-b8 diagonals (the latter because of Qxe5+) or the e-file.>

<MaJ> I don't think that's correct as 37.Kh3 draws even though it avoids both diagonals

Feb-05-08  The beginner: <Cuellargacharna>

Dont feel bad if you posted a somewhat offtopic post here. Not that i think these forums should be used for anything else but discuss chess, but you are forgiven given the circumstances in your country. It is my hope and also i belive that someday things will get better for people in your situation.

Feb-05-08  The beginner: Ra7 wasent so hard to find

I must admit like others here, I dident see all the ways black could try and sac his rook, i just made sure there was no way the Queen could come free with a check Qxe5+

Feb-05-08  TheaN: 1.5/2

Glup. Oops.

I got 35.Ra7 with Rc7 36.Rxc7 as a remove the guard problem, but I completely missed the Rook checks. Well, didn't miss them, just missed the countersacs. But I did miss the Queen checks on e5, so half point for me. Meh.

The best play for Black is of course 35....Rc1+ 36.Kg2 Rg1+ (Rc2+ 37.Kf3... I believe) 37.Kh3 Rg3+ 38.Kh2 and Black has exhausted his drawing/winning resources.

Feb-05-08  OBIT: <HelaNubo> Wow, nice job. I figured someone would find a solution overnight, if the win was there. I'd say this is a Tuesday puzzle as Tukmakov played it, a Thursday puzzle with the best try. :)
Feb-05-08  uuft: Finding Ra7 is good enough for a tuesday, imo. Can't believe I missed it. In a real game, however... ;(
Feb-05-08
Premium Chessgames Member
  johnlspouge: Tuesday (Easy): White to play and win

Material: White is down the exchange. His pieces are agressively placed against Black's K-side, and only the Ra1 needs to come in. The Black Rf8 is attacked by Qh6. If Rf8 is unprotected, the move Qxf8 is mate, so the Black Qe7 must protect Rf8 at all costs. The candidate is therefore obvious.

Candidate (35.): Ra7

Black has a few checks with the Rc3 (which I will skip), but after that faces a very unpleasant choice.

35...Qg7 36.Qxg7#

35...Qf7 36.Bxf7 followed soon by mate.

35...Q other move on the 7th rank 36.Qxg8#

35...other 36.Rxe7 followed soon by mate.

Feb-05-08  Halldor: Attack on an overworked piece, 35.Ra7! and the queen can't defend the squares f8 and h7 simultaneously.
Feb-05-08  nimzo knight: i missed it :(
Feb-05-08  Komapsimnita: Hmm, even after seeing the answer, reading the posts, and having a wee think, I'm still not completely clear or confident on the winning line. This was nae easy at a' ken-say. I guess this one is tough because you have to see the moves-and then see it's a losing position.I'm that used to looking for the ol' checkmate. This one stumped me and I'm waiting for it to sink in.
Feb-05-08  Komapsimnita: Oh, there it goes, the penny has dropped. Oh yeah, that's satisfying.
Feb-05-08  MostlyAverageJoe: <zooter: <MaJ> I don't think that's correct as 37.Kh3 draws even though it avoids both diagonals>

My lame response is that 37...Rh2+ forces the white K onto one of the diagonals (or white might lose after 38.Kg4 gxf5+).

However, the losing prospects of 38.Kg4 are a long shot to see in the initial position, hence indeed, I admit an inaccuracy in my earlier statement.

Feb-05-08  SuperPatzer77: <HelaNubo> It is an excellent analysis you've shown us. I completely agree with you, HelaNubo that it is 37. Kf3!! - only move for White's win. 37...Rf2+, 38. Kg4! Rf4+, 39. Kg3! Rg4+, 40. Kxg4 gxf5+, 41. Kh3! .

So, 37...Rf2+, 38. Kg4! gxf5+, 39. Kh3 Rh2+, 40. Kxh2 Qxe5+, 41. Kh3 - Black has no more checks.

Feb-05-08  YouRang: Fairly easy as a Tuesday should be. :-)

We have mate if:
(1) we can deflect the black Q, allowing Qxf8#,
-OR-
(2) we can get another attack on h7, allowing Qxh7#.

With this in mind, one notices the rook screaming to make both threats with 35.Ra7!, and black can only deal with one of those threats.

Black can try some desperado checks, and white still needs to exercise basic caution, but the game is over.

Feb-05-08
Premium Chessgames Member
  DarthStapler: I got the idea and I saw Rc1+ but after Kg2 I thought he would play Rc2+ and missed the Rg1+ defense, however I then saw Kh3 wins
Feb-05-08  general607: I found Ra7 quickly, but took a minute or so to verify Kg2-f3 or h3 depending on black's choices -g4 following the rook checks outlined in other posts. Good game.
Feb-05-08  Boerboel Guy: Removing the guard....this was very easy!
Feb-05-08
Premium Chessgames Member
  kevin86: TTTT,I missed this one. I was looking at other moves but missed Ra7 :(.The text is brilliant as it skewers the black queen to a mate threat at g7. Black has only a few spite checks and a halfpenny trap left to him. (the trap): 38 ♔xg1??,where ♕xa7+ turns the tables.
Feb-05-08  SpoiltVictorianChild: I saw the Ra7 move, but got lost in the counter possibilities, and didn't see a way out for white's king, so gave up that line.

This was tough for a Tuesday.

Feb-05-08
Premium Chessgames Member
  ClassZPlaya: I solved this, but I thought it was quite difficult. I found HelaNubo's line (36. ... Rc2+ 37. Kf3 Rf2+ 38. Kg4 gxf5+ etc. ) after analyzing what turned out to be the game continuation, and I thought Black could do better. But I have to admit I only found this because I assumed that White had a winning line, this being a puzzle and all. Over the board I think I would have probably only considered 36. ... Rc2+ 37. Kh3?
Feb-05-08  znprdx: Beautiful 'Friday' problem :) Our chess experience would tell us that despite the obvious beauty of 35.Ra7 - the variations of the wild rook checks which would allow g5xf5+ combined with the final Qxe5+ (especially after losing the rook) seem too much because of an instinctive fear of a possible Rg8+. The key move therefore had to be precisely calculated and seen exactly as in the excellent analysis by <HelaNubo:> This was a very impressive feat - and most instructive. I chickened out and started looking at e5xf6 when I timed out while entertaining the fantasy of a delayed Ra7. tsk-tsk

Feb-05-08  wals: Divert the black Queen
35.Ra1-a7...Q x a7 36. Q x f8 +
PM =
Didn't even notice the possibility Rc3-c1+
Feb-05-08  HOTDOG: what about 35.Qxf8+ Rxf8 36.Ra8 ?
Feb-05-08  SuperPatzer77: <HOTDOG> You've overlooked the Black Rook on c3. 35. Qxf8+?? Qxf8, 36. Ra8 Rc8! leaving Black a queen up
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