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Maia Chiburdanidze vs Semen I Dvoirys
URS-ch48 sf (1980), Tallinn, Aug-??
Sicilian Defense: Najdorf Variation (B96)  ·  1-0



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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 3 OF 3 ·  Later Kibitzing>
Aug-27-11  karnak64: Wow. Look at White's 12th and 13th moves. Crazy stuff.
Aug-27-11  DarthStapler: I got the first 3 moves
Aug-27-11  Vladimir Zukhar: 24...Q-Q1 improves for B altho B is still lost as the 2 Black Q-side P will go lost.

still, its a lost endgame vs. imediate resignation. in a game with amateurs/club players level, there would be hope for draw, but not with GM

Premium Chessgames Member
  Jimfromprovidence: I never even considered the text 23...Kf8, because the text 24 Qxf6 looks so good for white. (seeing 25 Re7,etc.)

The puzzle got too profound for me after 23...Ne6.

I did not consider 23....Ne6 24 f5!?, either, although I am curious what happens after 24...Qa7?!, (threatening 25...Qf2, attacking both the rook and the f pawn, or 25...Qd4, threatening 26...Qxb4)

click for larger view

Aug-27-11  Yodaman: I usually don't get "very difficult" rated problems but I got this one in about three minutes all the way all the way to move 27.QxQ just by looking at the puzzle position on the homepage. Something about the puzzle was very intuitive to me that made it easier than what "very difficult" puzzles usually are for me.
Premium Chessgames Member
  patzer2: <gofer:> <morfishine: 22.Rxe7 Kxe7 23.Re1+ Kf8 24.Qxf6 Qd8>

<I think this quickly exchanges into a losing endgame for black.>

<25 Qxd8 Rxd8>
<26 c7 Ra8>
<27 c8=Q+ Rxc8>
<28 Bxc8 ...>

Even stronger is 24...Qd8 25. Qd6+ Kg1
26. c7! Qf8 27. Qxd5 (diagram below)

click for larger view

From here, play might continue 27...h5
28. Qxa8 Qxa8 29. c8Q+ QxQ 30. BxQ (diagram below)

click for larger view

Here Black is better with two extra pawns, instead of just one, than after the 25. Qxd8+ Rxd8 26. c7 Ra8 27. C8Q+ Rxc8 28. Bxc8 continuation.

Aug-27-11  standardwisdom: It appears that the Bishop on d7 is so strong, that 19..Ng7 has got to be a mistake. Perhaps 19..Nf8 holds better? But it seems, not 19..Kf8, which can lead to problems after a rook lift.
Aug-27-11  goodevans: <Jimfromprovidence: ... I did not consider 23....Ne6 24 f5!?, either, although I am curious what happens after 24...Qa7?!>

At first I thought <24 f5> would be the right way to answer <23 ... Ne6>, but now I'm inclined to go with <24 Bxe6> as analysed by <abuzic>.

After <23 ... Ne6 24 f5> black has <24 ... Rag8> intending either Rg5/Qf4+ or Rg4/Re4. Whatever white does, black seems to get good counterplay so it seems 24 f5 is too slow.

Aug-27-11  David2009: Chiburdanidze vs Dvoirys, 1980 postscript: In the line 22.Rxe7 Kxe7 23.Re1+ Kf8 24.Qxf6 Kg8 25.Re7 Rf8 26.Be6 Qxe7 27.Qxe7 Nxe6! 28.f5 Kg7 29.fxe6 Kg6 we reach

click for larger view

with Crafty End Game Trainer link Thanks to <SimonWebbsTiger> for suggesting the fine resource 30 c7! (numbering typo corrected) which does indeed crack Crafty EGT :) . After 30.c7 fxe6 31.Qxe6+ Kg7 32.Qxa6 Rc8 33.Qxb5 Rxc7 34.Qxd5 Rhc8 35.Qe5+ Kg6 36.Qe4+ Kf6 37.Kb2 Rc4 38.Qf3+ Ke5 39.Qb3 Rf4 40.Qe3+ Re4 41.Qg5+ Kd6 42.a3 Rce8 43.Qh6+ R8e6 44.Qxh7 Re2 we reach

click for larger view

and there must be many ways of winning this ending. Crafty EGT link to explore this final position:

Thanks also to <sevenseaman> for the friendly comment - I have to confess that the first time I reached the second diagram I only managed a draw. I gave up my K side Pawns to push the Q side Pawns: this works except that I pushed the b Pawn too quickly allowing the snap exchange of RR for Q+P on c2 woth a draw since the b Pawn was too far forward. We live and learn - I had no problems winning second time round.

Aug-27-11  morfishine: <patzer2> Thanks patzer2! I feel even better than before. Frankly, I was satisfied to make it thru <24.Qxf6> just on a sound positional basis

<David2009> On <I have to confess that the first time I reached the second diagram I only managed a draw. I gave up my K side Pawns to push the Q side Pawns: this works except that I pushed the b Pawn too quickly allowing the snap exchange of RR for Q+P on c2 woth a draw since the b Pawn was too far forward. We live and learn - I had no problems winning second time round> I followed virtually the identical road against CRAFTY

<sevenseaman> Great poem or verse the other day and good insight to today's puzzle

Aug-27-11  stst: W K is quite locked in, the N is pinned, with g7 the weakest link. Also the W PB pair forms a duo hard to break for B (without unnecessary sac.) May just try the quiet Re3 planning for g3 aiming Qxg7, if Bk B attempts to loosen up, say Bd6, double up Rde1 and Bk has no more good defense - pulling its Q to d8 may guard e8, but not g7. Thus: 22.Re3 Bd6
23.Rde1 Qd8
24.Rg3 Rg8
25.Re8+ QxR
26.BxQ KxB
27.Re3+ Kd8
28.Qf6+ Kc8
29.Qxf7 Rf8
30.Qd7+ Kb8
see if the lady champ got other ideas...
Aug-27-11  stst: yeah, the lady champ really tries a direct R sac, which I also thought about of course, but it does not lead to a clean slate, as the game shows, after KxQ, W queens its P, but a win is not imminent; though material adv. is definitely there (Q + promotional Ps vs R & N for Bk.)
Aug-27-11  gofer: < David2009: Chiburdanidze vs Dvoirys, 1980 postscript: In the line 22.Rxe7 Kxe7 23.Re1+ Kf8 24.Qxf6 Kg8 25.Re7 Rf8 26.Be6 Qxe7 27.Qxe7 Nxe6! 28.f5 Kg7 29.fxe6 Kg6 we reach>

<30 c7 fxe6>
<31 Qxe6+ Kg7>
<32 Qxd5 Rc8>
<33 Qd7+ Kg6>

click for larger view

Black is deader than dead. The black rooks are tied to the back rank and the black king is tied to the king side).

Crafty EGT can't resist a free pawn, so <34 a4 bxa4> gives the white king complete freedom to come to b7 after taking Pa4 and "That's All Folks!"... ...okay it will take a while but black can resign as there is absolutely no counter-play on offer!

Aug-27-11  rhickma4: The first move seems obviuos, but the eventual attcak less clear.

22.Rxe7 Kxe7 23.Re1+ Ne6 24.Bxe6 fxe6 25.Qg7+ Kd6 26.Rxe6+ Kxe6 27.Qxc7 Rad8

Black has 2 R for the Q,but White can continue the attack

28.g4 f5 29.Qe5+ Kf7 30.Qxf5 Kg7
I think this final position is one for White

Aug-27-11  rilkefan: <David2009>, thanks for the Crafty link, as always. I had a lot of fun winning that won endgame (even if it did take quite a few times to avoid blunders), in part because I knew from Nunn's Understanding Chess Endgames when I could just sac my queen for one of the rooks and win with the advanced connected qside pawns.
Premium Chessgames Member
  agb2002: White has a pawn for a knight.

Black threatens ... Bxb4 and ... Qa5 with counter play.

The black king is overworked although the possibility of extracting him is more interesting than recovering some material. Hence, 22.Rxe7:

A) 22... Kxe7 23.Re1+ (better than 23.Qxg7 Qxf4+)

A.1) 23... Kd8 24.Qxf6#.

A.2) 23... Kd6 24.Qxf6+ Ne6 25.Q(R)xe6 fxe6 26.R(Q)xe6#.

A.3) 23... Kf8 24.Qxf6

A.3.a) 24... Kg8 25.Re7 Rf8 26.Be6

A.3.a.i) 26... h5(6) 27.Bxf7+ Kh7 28.Qg6#.

A.3.a.ii) 26... Nxe6 27.Rxc7 Nxc7 28.Qg5#.

A.3.a.iii) 26... fxe6 27.Qxg7#.

A.3.a.iv) 26... Qxe7 27.Qxe7 Nxe6 (27... fxe6 28.c7 and 29.Qd8) 28.f5 Ng7 29.c7 and 30.Dd8 + - [Q+P vs R+N].

A.4) 23... Ne6 24.Rxe6+ fxe6 (24... Kd8 25.Qxf6#) 25.Qg7+ Kd6 26.Qxf6

A.4.a) 26... Ra(h)e8 27.Qe5+ Ke7 28.Qxc7 + - [Q+B+2P vs 2R].

A.4.b) 26... Qb6 27.Qxe6+ Kc7 28.Qe5+ Kd8 29.Qxh8+ Kc7 (29... Ke7 30.Qxh7+, Black loses more material with check) 30.Qe5+ Kd8 31.Qxd5 + - [B+4P vs R].

A.4.c) 26... Qb8 27.Qe5+ Ke7 28.Qxe6+ Kd8 (28... Kf8 29.Qf6+ Kg8 30.Be6#) 29.Qf6+ Kc7 30.Qe5+ Kb6 31.Qd4+ perpetual at least.

A.4.d) 26... Qd8 27.Qe5+ Ke7 28.Qg7+ perpetual at least.

A.4') 23... Ne6 24.Bxe6

A.4'.a) 24... fxe6 25.Qg7+

A.4'.a.i) 25... Kd6 26.Rxe6+ Kxe6 27.Qxc7 + - [Q+2P v 2R].

A.4'.a.ii) 25... Kd8 26.Qxh8+ Ke7 27.Qg7+ (27.Qxa8 Qxf4+) 27... Kd6 (27... Kd8 28.Qf8#) 28.Rxe6+ Kxe6 29.Qxc7 + - [Q+2P vs R].

A.4'.b) 24... Qxc6 25.Bxd5+ wins the queen.

A.4'.c) 24... Kd6 25.Qxf6

A.4'.c.i) 25... Rhf8 26.Bf7#.

A.4'.c.ii) 25... Kxc6 26.Bxd5+ Kxd5 (26... Kd7 27.Re7+, etc.) 27.Qe6+ Kd4 28.Qe4+ Kc3 29.Re3#.

B) 22... Qd6 23.Rde1

B.1) 23... Qxb4 24.Re8+ Rxe8 25.Rxe8#.

B.2) 23... Qxe7 24.Rxe7 Kxe7 25.Qxg7 + - [Q+B+P vs 2R].

B.3) 23... Kg8 24.Be8 Qxb4 25.Bxf7+ Kf8 26.Bxd5 Qa3+ 27.Kb1 Qb4 28.Bb3 + -.

Aug-27-11  sevenseaman: In a joint kind of effort involving inputs from <SimonWebsTiger, gofer, patzer2> and may be some more, <David2009 and morfishine> have really cornered Crafty to solve today's puzzle.

Crafty never lets you off easy. Its like playing <Test> cricket; one needs patience and comprehensive long range planning and perseverance to arrive at a result. <Short-range temptations can be very diversionary and wasteful>.<gofer>'s input exemplifies a solid, long-range outlook.

Well done folks. I find the joint outcome very encouraging and confidence-building.

Aug-27-11  CHESSTTCAMPS: White is down a piece but has a dangerous pawn on c6 and a strong attack against the weakened black king position. My first instinct was 22.Rxe7 Kxe7 23.Qxg7(??) but then I realized that 23... Qxf4+ turns the tables. The alternative plan of 22.Rd3 to attack g7 appears to be refuted by 22...Bd6. The weakened dark squares near the BK suggests that 22.Rxe7 is correct, but maintaining protection of f4 is critical to make it work.

22.Rxe7!! Kxe7 23.Re1+! and now:

A) 23... Kd8? 24.Qf6#

B) 23... Kd6? 24.Qxf6+ Ne6 25.Rxe6+ fe 26.Qxe6#

C) 23... Ne6 24.Bxe6! (Rxe6+ fe 25.Qg7+ Kd6 26.Qxf6 Qb8 27.Qe5+ Ke7 28.Qxe6+ Kd8 29.Qe5+ Kb6 30.Qd4+ appears to draw) fe 25.Qg7+ Kd6 26.Rxe6+ Kxd6 27.Qxc7 (threatening Qd7#) Rad8 (f5 28.Qe5+ wins two pawns with a winning position) 28.g4! f5 29.Qe5+ Kf7 30.Qxf5+ is clearly winning.

D) 23... Kf8 24.Qxf6 (threatening Re7) and now

D.1) 24... Kg8 25.Re7 Rf8 26.Bg4! Qb6 (Qb8/d8 27.c7 followed by c8=Q wins) 27.Rg7 wins the BQ.

D.2) 24... Qd8 25.Qd6+ Kg8 26.c7 Qf8 27.Qxd5! Ne6 (Rc8 28.Bxc8 Qxc8 29.Qd8+ wins) 28.Qxa8! Qxa8 29.c8=Q+ Qxc8 30.Bxc8 and the extra pawns plus the vulnerable black queenside pawns and better minor piece adds up to a won ending.

Time for review.....

Aug-27-11  CHESSTTCAMPS: In D.1, 27.Rg7 should read 27.Rb7. I realized the huge flaw in my D.1 line when I saw that black could check after 27.Rb7. Crafty proves that black wins in this line. Careful re-evaluation of the position at move 26 would be necessary to avoid this disaster, because the superiority of the move played Maya (whom I saw play at the World Open in 1989) is now clear.
Aug-27-11  alachabre: The apparent destructive breakthrough

22. Rxe7 Kxe7
23. Nxg7 fails to the counterattack Qxf4+.

However, if instead

23. Qxf6, Black appears to be in a bit of a pickle, with the threat of Qe7+. Is there anything to the threat? I'm going to calculate this out as if White has a move in hand.

23. ... ...
24. Qe7+ Kg8, and as I start this calculation, I wonder if...

24. Re7 might not be the stronger threat. First, I have to come up with some reasonable 23d moves for Black.

23. ... Qd8
24. Re7? Qxe7

24. Re8+ Nxe8
25. Qxh8+ Ke7
26. Qe5+ and a perpetual check is in the cards, but I don't think that's where this position is leading.

24. Be6 oops! Better shelve that one.

24. Qxd8 Rxd8
25. c7, ah, now I think I see the key to the position (not that I underestimated the strength of this pawn at the beginning). So that Black queen needs to mind its duty of blockade, and 23. ... Qd8 is out.

23. ... Kg8
24. Re7 Rf8
25. Be6 Nxe6
26. Rxc7 Nxc7?
27. Qg5#

25. ... Qxe7
26. Qxe7

I think that's a fair analysis. I spent a bit of time on yesterday's puzzle as well, and didn't get the breakthrough move posted before the 9 p.m. PDT changeover. I learned a lot on that one about obstrucion and how sometimes the less obvious move is the one that deserves the attention.

Aug-28-11  Dr. J: < David2009: Chiburdanidze vs Dvoirys, 1980 postscript: In the line 22.Rxe7 Kxe7 23.Re1+ Kf8 24.Qxf6 Kg8 25.Re7 Rf8 26.Be6 Qxe7 27.Qxe7 Nxe6! 28.f5 Kg7 29.fxe6 Kg6 30.c7 fxe6 31.Qxe6+ Kg7>

click for larger view

This ending can be won quite quickly by using the c-pawn to keep all(!) the Black pieces confined to the 8th rank. Against Crafty the game continued:

32.Qxa6! Rc8 33.Qd6 Rhg8 34.Qxd5 Kh8 35.Qd7 h5

click for larger view

36.c4 bxc4 37.b5 Rxc7 38.Qxc7 etc.

A pity I'm so late to the party, and there's no-one left to admire my astonishing brilliance...

Aug-28-11  morfishine: <Dr.J> On <A pity I'm so late to the party, and there's no-one left to admire my astonishing brilliance...> Good going at taking CRAFTY to task
Aug-28-11  KingV93: <SimonWebbsTiger> Ah, Thank You. I do look back before posting but usually just browse and, as is apparent, sometimes miss the answer to the question I'm thinking. Thanks for the refrence, very helpful.
Apr-28-16  clement41: Wild Najdorf!
Premium Chessgames Member
  yiotta: Dvoirys was a Sicilian specialist and theoretician who was known to hit his head when he lost. I'm a little surprised he survived this beautiful beatdown.
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