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Alexander Kazimirovich Tolush vs Vladas Mikenas
USSR Championship (1950), Moscow URS, rd 12, Nov-30
Neo-Grünfeld Defense: Non- or Delayed Fianchetto (D70)  ·  1-0

ANALYSIS [x]

FEN COPIED

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 4 OF 4 ·  Later Kibitzing>
Apr-06-06  clausantos: I get this one. Unusual at thursday...
Apr-06-06  BipolarChessorder: I saw 38.Qf6+ etc. but was wondering about 38.Rd5. If 38...Bxe3+ 39. Kh1 there's no (immediate) perpetual and I can't see anything for Black. White still has the d7 pawn and 39. ...Bxd5 40. Qxd5 the attack is dead. Thoughts, anyone?
Apr-06-06
Premium Chessgames Member
  al wazir: <BipolarChessorder: I saw 38.Qf6+ etc. but was wondering about 38.Rd5. Thoughts, anyone?>

See kibitzing on first page.

Apr-06-06  Chess Prodigy: 4/4 this week...I did Qxf8+ instead of Qd4+, which is a winning move, but not as winning
Apr-06-06  dhotts: Why even do 38.Qf6+, why not immediately 38.d8=Q! and have two Queens on the board instead of 1 in jeopardy?
Apr-06-06  Jim Bartle: It's not a check. Black could play 38...Bxe3+ followed by Rg2+.
Apr-06-06  dakgootje: <dhotts: Why even do 38.Qf6+, why not immediately 38.d8=Q! and have two Queens on the board instead of 1 in jeopardy?> Because of 38. d8=Q Bxe3+ 39. Qxe3 Rg2+ and there is a perputual because of 40. Kh1 Rxb2+ 41. Kg1 Rg2+ et cetera
Apr-06-06  Goumindong: <doglikegroove> Not only does that allow the Rg2..Kh1..Rb2..Kg1 perpetual check, but black can also play Rxe6 which evens up the board if white takes the bishop, though i dont know if he can win from there.
Apr-06-06  aazqua: Why not Rd5? At least make the finish interesting.
Apr-06-06  Goumindong: <aazqua> Rf1 also seems to work to me.
Apr-06-06  goldenbear: Hmmm. I thought it was Rf1.
Apr-06-06  goldenbear: Rf1, with the intention of giving up the queen after Bxe3+.
Apr-06-06  Marmot PFL: <LIFE Master AJ: The game score here is incorrect.> Thank you, that makes more sense. I am always surprised how different versions of the same game exist.
Apr-06-06
Premium Chessgames Member
  OBIT: <goldenbear> 38. Rf1? Bxe3+ 39. Qxe3 Rg2+! (not 39...Rxe3?) 40. Kh1 Rf2+! draws
Apr-06-06
Premium Chessgames Member
  OBIT: So, what's the final verdict? Four winning plans?

(1) 38. Qf6+

(2) 38. d8=N

(3) 38. Rd5

(4) 38. Nf5

Gee, how could anybody miss this one? :)

Apr-06-06  apawnandafool: I missed it. :(
Apr-07-06  goldenbear: <OBIT>Thanks. I never considered that.
Apr-07-06  Goumindong: <OBIT> D8=N does not work, it allows the infinite check.

<goldenbear> No, 38. Rf1..Bxe3 39. RF2!?

Now white has the escape he needs, and can threaten the other rook, this removes blacks checkdraw and still threatens the promotion, after a couple moves, white will attain mate or a clear position and material advantage.

Apr-07-06  Goumindong: Rd5..bxe3, the infinite check is gone, but white isnt gaining any advantage.
Apr-07-06
Premium Chessgames Member
  An Englishman: Good Morning: <zerok>, thank you for running my idea through your computer. Did the computer analysis give a reason for not playing my 37.Nxh6? It picked 37.d8/Q instead.
Apr-07-06  LIFE Master AJ: Ya'll are still struggling with an incorrect/incomplete game score.
Apr-07-06
Premium Chessgames Member
  OBIT: <Goumindong> There are a fair amount of posts here addressing the 38. d8=N line, and I think we eventually got it right. There is no perpetual check.

<An Englishman>I looked at 38. Nf5 also, and it did seem like you might as well queen right away (38...Rxe6 39. d8=Q). Your move may also work, but it didn't look too clear.

Apr-28-06
Premium Chessgames Member
  patzer2: The key to solving the previous daily puzzle (38?) in the diagram below is avoiding the obvious pawn promotion 38. d8=Q??, which enables Black to swindle a clever draw.


click for larger view

[White to move (38 ?)]

Not 38. d8=Q?? Bxe3+ 39. Qxe3
Rg2+ 40. Kh1 Rd2+ 41. Kg1 Rg2+ 42. Kh1 Rd2+ 43. Kg1 Rg2 = (draw by perpetual check).

But instead White solves the puzzle and wins with
<38. Qf6+!> 38... Rxf6 39. d8=Q+ Rf8 40. Qd4+ (diagram below) when Black is forced to move his Bishop to g7 and no longer threatens the perpetual.


click for larger view

[Black to move (40...?) and lose. Position after 38. Qf6+! 38... Rxf6 39. d8=Q+ Rf8 40. Qd4+]

If 40...Kg8, then 41. Qc4+ (double attack) 41...Kh8 42. Qxe2 wins easily.

So Black must play 40...Bg7 when 41. Qd3! (the actual game continuation as provided by <LIFE Master AJ> on a previous page) 41...Bf3 42. Rd2 (diagram below ) secures the won position and ends Black's hope of swindling a draw.


click for larger view

[Position after 38. Qf6+! Rxf6 39. d8=Q+ Rf8 40. Qd4+ 41. Qd3! Bf3 42. Rd2 ]

Apr-28-06
Premium Chessgames Member
  patzer2: Here's an instructive position from the game score provided by <LIFE Master AJ>:


click for larger view

[White to move (42?) after 38.Qf6+ Rxf6 39.d8Q+ Rf8 40.Qd4+ Bg7 41.Qd3 Rff2.]

Solution: White played 42. Qxe2! when play might have continued 42...Rxe2 43. Rd8+! Bf8 44. Rxf8+ Kg7
45. Raf1! .

Jun-02-15
Premium Chessgames Member
  zydeco: 15....e5 is definitely a strange decision. 15....cxd5 seems mandatory.
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