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S P Tanin vs Grigory Konstantinovich Sanakoev
URS-ch6 sf corr (1960) (correspondence), USSR
French Defense: Winawer. Poisoned Pawn Variation Main Line (C18)  ·  0-1

ANALYSIS [x]

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 2 OF 2 ·  Later Kibitzing>
Dec-23-12
Premium Chessgames Member
  PawnSac: <diagonalley: this game played in a sanatorium(?)>

no, but it DID get both players committed! lol

Dec-23-12  Elo: Rule #1 on CG puzzles: Always verify whose move it is first! Something about that position strongly suggests it is White's move, so I plunged ahead without first doing my 'prep work'.

I spent 15 minutes trying to figure out what brilliant stroke was up White's sleeve. I wasn't 'seeing' it all the way through, but figured it must begin with Rxb7! Well, at least the first move was a rook move ;-)

Lesson still learned though -- Always, always, always verify first what is really going on here, regardless of how things might 'appear'.

Dec-23-12
Premium Chessgames Member
  morfishine: Following up here: not 23.Kc1 <bxa6> due to 24.Bxa6+ Kb8 25.Qxd5

but 23.Kc1 <Rxg8> 24.Qe2 Qxc5

Either way, Black played it better as pointed out by <Phony Benoni>, White will lose his rook

<diagonalley> & <PawnSac> I can't stop laughing...I think this game was really played in a sanatorium!

Dec-23-12
Premium Chessgames Member
  morfishine: Sana Koev is coming to town...
Dec-23-12  Rama: Double-dis check wins again! I have won a couple that way, always feels wonderful.
Dec-23-12  scormus: 20 .... Rde8! He had to be insane to play such a move. Sensational!
Dec-23-12  mmousez: What about this line:

20. ... Rde8!
21. fxe8+ Rxe8
22. Qxb7+ Qxb7
23. Rxb7 Kxb7


click for larger view

But now it's White turn, so he can avoid the discovery check by moving the K. Material is equal but White has both Bishops and dangerous passed g and h pawns.

It's not clear to be that White has a forced win.

Dec-23-12  5hrsolver: < mmousez: What about this line:

20. ... Rde8!
21. fxe8+ Rxe8
22. Qxb7+ Qxb7
23. Rxb7 Kxb7 >

After 23.Rxb7 black plays Nd3+

Dec-23-12  mmousez: 5hrsolver: Ah thanks! That's what I missed. After 23. Rxb7 Nd3+, White gets mated by Re1.
Dec-23-12  LIFE Master AJ: 20...Rde8; (walking into a fork); was the craziest move I could come up with ... usually, that it the idea on Sundays.
Dec-23-12
Premium Chessgames Member
  chrisowen: Kind alive to the point in as fording quite a mind at work in wall it is too barmy for me inclusive ok castle long queen infiltrate nabbing g7 and flipflop in h7 it seem like for together indeed in account to heathen gains all balances out hint rook in e8 first bold step oe'r I heard the word book a slot he row in body of evidence rook is a golden monkey 20...rde8 providing luft in c8 and oscillate threat black has king creating rook ale knight engage d3 once duress he a fxg8=Q curried favour in d3+ king erst while go build in go 22.Kd1 in a6 another bind a cow g8 bored, in bin chief e8 drill again crabbed hara lashing lesson as far as i got, in carried away ah exalt queen in e8 sit revere in weept time 23...Bxe8.
Dec-23-12  5hrsolver: Wow what a game!!
I realized black has to create a escape square for the king before capturing the queen on a6. I looked at 20..Nf3+ followed by Rde8+ and thought that line wins. Then I started looking for a better line and saw the actual move 20..Rde8. I worked out all the lines here but missed 21.fxg8=Q. An important miss but I worked out the lines again after seeing that move.

After 20..Rde8 if White plays for example 21.Qe2 then simply Nxf7 wins the pinned queen

On the beauty side. 22..Bg4+ could have been a really neat way to end the game if not for the white queen capturing the bishop with check.

Heres one reason why 20..Nf3+ followed by Rde8+ does not work 20...Nf3+ 21.gxf3 Rde8+ 22.Qe2 Qxc5 23.fxg8=Q Rxg8 24.Kd1 and white will be up a rook.

Dec-23-12  Patriot: There's a lot going on in this position. The g8-rook is hanging and the white queen is hanging. White has the bishop pair. Black has some advanced pawns, mainly c3, controlling b2 and d2.

First, 20...bxa6 21.Bxa6+ Qb7 22.Bxb7+ Kc7 23.fxg8=Q Rxg8 simply loses for black.

20...Nxf7 21.Qxa7 Bc6 helps control the fire but doesn't look promising.

20...Qxc5 21.Qxb7# is simply out of the question.

20...Rxg2 21.Bxg2 bxa6 22.f8=Q Rxf8 23.Bxf8 should be technically winning (2 rooks for queen + 2 pawns); 21.Qxa7 Nf3+ 22.Kd1 Rd2+ 23.Kc1 and I'm not sure where this is going. 23...Bf5 24.Qa8+ Kd7 looks a bit dangerous for black or 24.Bd3 Bxd3 25.cxd3 Qxf7.

I would go with 20...Rxg2 but cannot be 100% sure.

Dec-23-12  King Sacrificer: This must be the hardest puzzle i have ever seen.
Dec-23-12
Premium Chessgames Member
  Jimfromprovidence: 20…Rde8! (not 20…Rge8 because black won’t be able to play …Bxa6) 21 fxg8=Q Nd3++ 22 Kd1.


click for larger view

What an odd position. Black has a mate in one threat that he cannot play because his rook is pinned. White has two queens but can’t save either one. (If he unpins the g queen he gets mated).

It’s funny how white’s position collapses as soon as black’s king gets that safe square after 20…Rde8.


click for larger view

He can’t play 21 Qxa7 because of 21…Nd3++ with mate next move.

He can’t play 21 Be2 because he will lose the queen. If he moves the king anywhere he will lose the queen as well.

Finally, he has no escape square for the queen.

Dec-23-12  Patriot: I missed a further continuation in <20...Rxg2 21.Bxg2 bxa6 22.f8=Q Rxf8 23.Bxf8 should be technically winning (2 rooks for queen + 2 pawns); 21.Qxa7 Nf3+ 22.Kd1 Rd2+ 23.Kc1 and I'm not sure where this is going. 23...Bf5 24.Qa8+ Kd7 looks a bit dangerous for black or 24.Bd3 Bxd3 25.cxd3 Qxf7> 26.Qa8+ Kd7 27.Rxb7+ is decisive for white.
Dec-23-12
Premium Chessgames Member
  whiteshark: D'oh, yet again the wrong rook. :D
Dec-23-12  deadlyduck: I was looking at 20..Ng4 with the following variations (but have probably missed the 'oh-so-obvious-refutation'....

21. fxg8=Q Rxg8;
22. Bd6 [if Qd6 Re8+; Be2 Qxd6; Bxd6 Ne3 and Black seems to have good compensation] 23. Be2 [if Kd1?? Nf2+ and mate next move]..bxa6;
24. Bxc7 Kxc7 and again with ..Ne3 coming Black seems to have good compensation.

There are bound to be holes there somewhere, however. Don't know if I would be brave enough to play it over the board.

Dec-23-12  5hrsolver: Here is another I think simple but nice continuation 20.. Rde8 21.fxe8Q+ Rxe8 22.Qe2 Bg4 and if the queen moves then Nd3 is checkmate.
Dec-23-12  Kikoman: I admit, I missed something, maybe next time I can try to solve insane puzzle over the board. :P
Dec-23-12
Premium Chessgames Member
  morfishine: <Patriot> Excellent post here, especially <20...Rxg2 21.Bxg2 bxa6 22.f8=Q Rxf8 23.Bxf8 should be technically winning (2 rooks for queen + 2 pawns); 21.Qxa7 Nf3+ 22.Kd1 Rd2+ 23.Kc1 and I'm not sure where this is going. 23...Bf5 24.Qa8+ Kd7 looks a bit dangerous for black or 24.Bd3 Bxd3 25.cxd3 Qxf7> 26.Qa8+ Kd7 27.Rxb7+ is decisive for white> I am beginning to think this game was really played in a sanatorium with all the nut-jobs in the background laughing along, kinda like that Jack Nicholson movie...except in this case, we're actually watching a great chess game :)
Dec-23-12  Patriot: <morf> Thanks! It's too bad I didn't take that last part a little further (there were more checks, captures, and threats). Good job on finding the key move!
Dec-23-12  James D Flynn: Material is equal but White has several threats on his next move that would win at once: 21.fxg8=Q, 21.Bd6 and if Qc6 22.Qxa7 and there is no answer to the threat of Qa8# except Qxd6 when Qxb7# instead, 21.Qxa7 and if Black simultaneously defends against threats of Bd6 and fxg8=Q by 21….Nxf7 22.Rxb7 Qxb7 23.Ba6 wins. White’s Q is involved in the mating threats and it is currently en prise but 20…..bxa6 21.Bxa6+ Qb7 22.Bxb7+ K moves 23.fxg8=Q Rxg8 and Black is a piece and a R down. Black has several moves that threaten bxa6 by providing and escape square for the Black K: B moves c6 which frees the Black Q from the defense of b7 and Bg4 which threatens a ckeck on the e file when Kf2 allows Qxc5+ or Re8 threatening the double check Nc3+ followed by Bg4+ and Black has mating threats. Candidates 20……Nxf7, Nc4,.Rde8,Rge8, or Rxg2.
20.Nxf7(the R on g8 is no longer en prise and Bd6 is answered by Nxd6 and if 21.Qxa7 Rde8+ 22.Kf2 (not Kd1 Bg4+ wins for Black) Ng5 23.Rxb7 Ne4+ 24.Kg1 Nxc5 25.Rxc7+ Kd8 26.Qxc5 Black has escaped the immediate mate but is hopeless down in material. 20…….Rde8(threat 21……Nd3+ 22.Kd1 Re1# if White counters that by 20.Be2 bxa6 21,Bxa6+ Kd8 22.fxe8+ Rxe8 and the threat us renewed plus Black is up a Q for R)21.fxg8=Q* now after Nd3+ 22.Kd1 The R is pinned and Bg4+ is answered by 23.Qxg4+, however 31…Nf3 32.Kf2 Qxc5+ 33.Kxf3 Bc6+ wins for Black. THIS IS A WONDERFULY COMPLEX POSITION BUT THIS IS ALL i HAVE TIME FOR TODAY.i WILL RETURN TO IT TOMORROW
Feb-09-18
Premium Chessgames Member
  Check It Out: What a mind-boggling game!
Apr-17-19
Premium Chessgames Member
  whiteshark: <thomastonk: I have undergone more intense feelings in corr chess in the pre-computer era than I had ever on the board.> #Metoo
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