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Evgeni Vasiukov vs Mark Taimanov
USSR Championship (1965), Tallinn URS, rd 5, Nov-29
Formation: King's Indian Attack (A07)  ·  1-0
ANALYSIS [x]

FEN COPIED

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sac: 37.Nf6 PGN: download | view | print Help: general | java-troubleshooting

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 5 OF 5 ·  Later Kibitzing>
Apr-14-11  ChessPieceFace: Oh my gosh! I got it (sort of)! Thanks to looking at yesterday's analysis, I noticed right away that the Rook on e4 is unguarded! If only there was a way to check the king while attacking the rook on a diagonal... (thanks to <Once> for putting these ideas in my head). The only problem was, I didn't think black would play 37...Kxf6 (because I didn't notice the Knight was forking the rook, I thought maybe 37...Qe6 or something like that).

But, dangit, I'm getting closer!!!

Apr-14-11
Premium Chessgames Member
  OhioChessFan: Believe it or not, but at 18 plies Fritz 10 prefers 44. Qe4+

44. Qe4+ (10.34)
44. Rxd8 (7.95)

Apr-14-11  JohnBoy: <Ohio> - can you give supporting reasons? Clearly white wants to rule out perpetuals and tricks like ...c2 and ...Qd1+. But beyond that I don't see the advantage.
Apr-14-11  stst: No direct lines of attack, try a N sac:
37.Nf6 (forking Q&R) KxN
38.Pg5+ PxP
39.PxP+ Kg7 (hiding)
40.Qh2 (go up h6+) Kg8 (flee)
41.Pf4 (to support P@g5 and attempt to advance)
still a long battle... not sure how off this line is.
Apr-14-11  Kruglov: It was my first Thursday puzzle solved in under 10 seconds. I found 37.Nf6 Kxf6 38.Qf3+ even before I looked for Black's possible counterattacks, including Rxg4, which Nf6 successfully defends.
Apr-14-11
Premium Chessgames Member
  OhioChessFan: <JohnBoy: <Ohio> - can you give supporting reasons?>

No.

Apr-14-11  Mushroom: Phony Benoni says this games was used as a puzzle on 27 August 08. Is there some index of old puzzles? If I miss Friday's puzzle (or don't get to look at the solution), can I find it on Sunday somewhere?
Apr-14-11
Premium Chessgames Member
  Jimfromprovidence: I spent a lot of time trying to figure out a way to stop 37...Rxg4. I mainly thought of 37 f3 or f4 but 37 f4 was the best I could come up with, seeing 38 Qf3.

I completely overlooked the winning move.

Apr-14-11  Marmot PFL: For quite a while I thought f3 was the best, tempo the rook and stop Rxg4, but not a winning move of course. Finally looking for another move to defend g4 I thought of the silly Nf6 (also a fork), Kxf6 Qf3+ (good, another fork) and figured that was it.
Apr-14-11  Marmot PFL: If a Wed puzzle from move 36 is now a Thursday from move 37 they must be under pressure to dumb them down.
Apr-14-11
Premium Chessgames Member
  Phony Benoni: <Mushroom> I've been compiling collections of daily puzzles, and currently have 2006-present covered. For instance, see Game Collection: Puzzle of the Day 2011.

I try to update this every day, so you should be able to find recent puzzles as well as older ones.

Apr-14-11  morfishine: <Phony Benoni> Thanks, after my guess, I was reading the other posts starting at move 36 and was thinking "Is my eyesight getting that bad?"
Apr-14-11  David2009: Vasiukov vs Taimanov, 1965 White 37?

Level material but White is under pressure. 37. Nf6 relieves some pressure seeing 37...Kxf6 38 Qf3+ Kg7 39 Qxe4. Time to check:
====


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Away from home using Wi-Fi: they close in two minutes: just time to post. No time to run Crafty EGT.

Apr-14-11
Premium Chessgames Member
  Once: I've been looking at the last move of the game 44. Qe4+ and trying to work out why Fritz prefers it to 44. Rxd8.

The first thing to notice is that initially at least Fritz doesn't want to play 44. Qe4+ at all. He rates it as 0.00 as 44... Kh8 repeats the position of a few moves ago. Fritz hates repeating a position, even for the first time and always gives it an eval of 0.00. It's a bug that we have noticed before on CG.com

But force Fritz into 44. Qe4+ and he quickly evaluates it as nearly +10, with the move 45. R1b6 to follow. Black will be quickly mated or have to throw oodles of wood.

By contrast, 44. Rxd8 allows black a few tricks, including 44...Qe7 (to try to force an excange of queens) and 44....Qf5 to take aim at the Rb1 and threaten to push black's passed pawn. 44. Rxd8 still wins handily with an eval of over +7, but it's not as quick as Qe4, which neatly sidesteps both Qe7 and Qf5 as potential black defences.

Apr-14-11
Premium Chessgames Member
  eternaloptimist: I got all of Vasiukov's moves right from 37.♘f6!! to the end of the game, but it took me a LONG time to solve it. I'm 4 out of 4 for this week so far! This game has good examples of a deflection (36.♗xe4 - making the back rank weak by deflecting the ♖ on e8 off of it, a decoy - 37.♘f6!! - by getting the ♔ on the f6 square to set up the double attack (w/ check), a double attack (w/ check) - 38.♕f3+ & taking advantage of a weak square (g6) - 40.♙h5. This is a brilliant combination by GM Vasiukov against the brilliant player GM Taimanov!
Apr-14-11  BOSTER: This is the position after 32.Rb2 with black to play


click for larger view

Playing 32...e5 Taimanov destroyed this position himself, because this pawn's push created weaknesses on d5 and f5. The chain e6-d5-c4 is more strong with pawn on e6. I guess it was necessary to play Rab8 and then to take the hole b3 by the rook .Maybe black was surprised when the horse on f6 suddenly changed his colour.

Apr-14-11
Premium Chessgames Member
  FSR: Taking a wild guess based on yesterday's puzzle (which I solved) I'm going to say 37.Bxe4 Rxe4 38.Nf6!
Apr-14-11  WhiteRook48: i got 37 Bxe4 but then failed
Apr-14-11  sevenseaman: There has been a fair bit of debate between 44. Rxd8 and 44. Qe4+ with possibilities of a perp more with one than the other. I do not see it quite clearly.

My view is 44. Qe4+ may have been prompted by the advancing Black 'c' file pawns as the two alternatives appear to be of equal value.

<FSR> you've mixed up the move numbers.

Apr-14-11  Patriot: <BOSTER> <Playing 32...e5 Taimanov destroyed this position himself, because this pawn's push created weaknesses on d5 and f5.>

Nice observation!

Apr-14-11  Old Wolf: <Kruglov> This may be your first Friday puzzle solved in under 2 seconds then!
Apr-14-11
Premium Chessgames Member
  Gypsy: <Phony Benoni: <morfishine: It looks like some people had the puzzle at move <36> while others had it at move <37> (like me)...strange>

This game was used as a puzzle before (Wednesday, 8/27/08), starting on move 36.>

My start was on move 36, today (Apr. 14, 2011). Nice and 'real' puzzle, btw. (Got it.)

Apr-14-11
Premium Chessgames Member
  Gypsy: Ok, the featured diagram is after Black move 35, but the instruction is: 37.?

Maybe that explains why some people start at move 36. and some at move 37.

Apr-15-11
Premium Chessgames Member
  Phony Benoni: That would explain it--but the diagram was switched. When it came up last night, the position was after Black's 36th move.
Apr-15-11
Premium Chessgames Member
  perfidious: The important feature of this position isn't really whether the solution comes at White's 36th or 37th move, for he must foresee the shot 37.Nf6 when he plays 34.Rb5.
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