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Theodor Ghitescu vs Zivojin Z Ljubisavljevic
Val Thorens (1988), ?
Slav Defense: Czech Variation. Classical System (D18)  ·  1-0
ANALYSIS [x]

FEN COPIED

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Given 13 times; par: 58 [what's this?]

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Kibitzer's Corner
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Sep-08-07  ellhares: dose any one have fritz 10 here? i wounder if fritz10 had the line (29.Re7 Qe730.Ng7!) cause chess master program couldnt find that line!! thats stratng any 1800 rated player could find that and a gaint program like chess master 10th edition couldnt find it and brefer (R h5) the beginers move!.
Sep-08-07  mallocks: <ellhares> Can't speak for Fritz but Rybka found the played line in 9 seconds, which isn't too bad for a Saturday in my experience.
Sep-08-07  ConstantImprovement: So, let us have a look at the possible motifs:

1. First and foremost, Re7: as a sacrifice that takes away an important defending piece: The Black Bishop is potentially protecting f6, g7 and h6 against a White attack.

2. The lounge Nf5 (After Re7: or in itself) is bringing one piece closer to the King.

3. The sacrifice Ng7: (After Nf5), perhaps followed by moves like Kg7: Qf6+ Kg8 and either Bh6 or Rf3, eyeing g3 with mate after Rfe8 and Bh6.

4. The move Bh6 (After Nf5 or in itself) with the pawn cover intact, threatening Bg7: (Or Ng7:). There could follow (at the Nf5-lines) h6: Nh6+ Kg7 (Kh8) Qf6#.

5. A mate of Knight and Bishop after Nf5 and a move like Bg5. Without the g7-pawn there is a mate like Nh6+ Kh8 Bf6#.

Let us begin with some tries:

I. 29. Bg5 f6 30. Nf5 e5: 31. Ne7+ Qe7:
(Kh8 32. Qf8: Rf8: Rf8:#) 32. Be7: Rf3: 33. Rf3: Re8 34. d6 Nc6 and Black is a pawn up with the strong paased pawns.

II. 29. Nf5

1. 29. .. Bf6 30. Nh6+

a. 30. ... Kh8 31. Rf5 threatening Rf6: f6: Qf6:# (motif) 31. ... h6: 32. Rf6: with a strong attack

b. 30. ... h6: 31. Qf6: (threatening 32. Bh6 and 33. Rg5#) 31. ... Qd6 32. Bh6: Qf6: 33. Rf6: and 34. Rg5# follows.

2. 29. ... Bc5 30. Bh6 with a strong attack, see 30. ... h6:? 31. Nh6:+ and 32. Qf6#

3. 29. ... Bd6 seems to hold, 30. Nh6+ h6: 31. Qf6 Be5: 32. Qe5: Qd6 and Black is a Rook up.

III. 29. Bh6 with threats like Bg7: Kg7: Re7: Qe7: Nf5+ forking King and Queen or Qg3 g6 winning at least an exchange.

1. 29. ... h6: 30. Nf5

a. 30. ... Bf6 31. Nh6:+ and 32. Qf6:#

b. 30. ... Bg5 31. h4 and the attack continues, but probably not strong enough to break through

2. 29. ... Bf6 30. Qf6: f6: 31. Rf6: Qg4 32. h3 Qh4 33. R1f5 with the threat of Nf3, but after 33. ... Qf6:! 34. Rf6: a5, Black is still winning.

IV. 29. Re7: Qe7:

1. 30. Nf5

a. 30. ... Qe8 (d7, c7, b7, a7, c5) and
now 31. Ng7: or even Bh6 should win right away (h6: Nh6:+ and Qf6#; else Bg7: next move, followed by Qg3 etc...)

b. 30. ... Qf6 31. Nh6+

b1. 31. ... Qh6: 32. Bh6: h6: 33. Qf6 with a winning attack because of the mate threat Rf3, Rg3#. 33. ... Rc8 34. h3 Rc7 (So that the f-Rook can move) 35. Rf3 Re8 36. Rg3 Kf8 and now Rg7, Rh7:, Rh8 should be enough, combined with a timely d6.

b2. 31. ... Kh8 32. Qf6: f6: 33. Bd4 should win, for instance 33. ... Kg7 34. Nf5+

b21. 34. ... Kh8 35. Bf6:+ Kg8 36. Nh6#

b22. 34. ... Kg8 35. Ne7+ Kg7 (Kh8 36. Bf6#) 36. Bf6:+ Kh6 37. Rf4 and 38. Rh4# follows.

So, let us review:

Not all of our motifs became visible during our analysis, but new, basic ones like the Nh6:+, Kg7, Qf6:# - sequence emerged. The final mate with Bishop and Knight working together to bring the King to the Rook was also noteworthy.

At the end, our main line:

29. Re7: Qe7: 30. Nf5 Qf6 31. Nh6+ Kh8 32. Qf6: f6: 33. Bd4 Kg7 34. Nf5+ Kg8 35. Ne7+ Kg7 36. Bf6:+ Kh6 37. Rf4 Kh5 38. Rh4#

Sep-08-07  Fezzik: My first thought was that this is much easier than yesterday's. I think I know why and it's the same reason the computers figured it out so quickly.

Rxe7 is about as natural as a sacrifice gets, and Nxg7 with threats of Qf6 and Re3-g3 is a tactic that I already know very well. Combining the two ideas was not very difficult (for a Saturday).

Yesterday's puzzle had a large number of false leads, making finding the first move of the combination very difficult by comparison.

BTW, I didn't even consider 31...Nc2. Unless White was very low on time, I thought that probably the best move was to resign. 31...Nc2 does prolong the game by controlling the d4 square, but it doesn't matter.

This was a beautifully played game by Ghitescu! It's always easier to sac material in a puzzle than in a real game.

Sep-08-07  Fezzik: PS: 31. Bxb6?! may win according to a computer, but the point of the attack was 31.Nxg7!! If you found Nf5, why would you then go about winning a pawn on the q-side?

It doesn't make sense to me, but the computer apparently agreed with you that it's at least playable..

Sep-08-07
Premium Chessgames Member
  patzer2: For today's puzzle solution, Ghitescu's exchange sacrifice 29. Rxe7!! gains a tempo for the Knight to attack and then demolish the Black King 's pawn cover with the poisoned piece and sham-sacrifice offer 31. Nxg7!

Of course the Knight is untouchable, because what follows after its capture is 31...Kxg7 32. Qf6+ Kg8 33. Bd4 with a decisive dual mate threat (34. Qg7# or 34. Qh8#).

So after 31. Nxg7!, with a strong central passer and his pieces swarming like killer bees around the weak and exposed Black King-side castled position, White wins easily.

Sep-08-07  ellhares: <mallocks: <ellhares> Can't speak for Fritz but Rybka found the played line in 9 seconds,> do u know where can i find a version or a dimo of rybca program? i wana try it!.
Sep-08-07
Premium Chessgames Member
  al wazir: <MAJ: . . . Qxc6 is not forced . . .> Yeah, there were a lot of things wrong with 29. Nc6. As I said, I didn't come close.
Sep-08-07  beginner64: Isn't 35. Nh5 better than played line of 35. Nf5?

Could someone with rybka analyze white's options at move 35?

Sep-08-07  Some call me Tim: <beginner64> I don't have Rybka, just my (aging) gray matter. But by the time 35. Nf5 is played White really has to look hard to find a non-winning move. I personally like Ghitescu's move better because 35. Nh5 f5 seems to slow things down, although it still wins. I liked the Bg7 theme and will remember it. All very pretty and instructive. I did analyze only 29.Rxe7 and did not analyze all possibilities after 31.Nxg7 as it instinctively seems to win. Black had to remove his Q from the defense of the K shelter on move 30 (30...Qf6, 31. Bd4 Qg6 32. Ne7+) and that does him in. It didn't seem necessary to calculate everything from there. I agree with <Fezzik> it is easier to see these things in a puzzle where you know a blockbuster is coming than in a real game where you have to create it yourself.
Sep-08-07
Premium Chessgames Member
  dzechiel: <ellhares: <dzechiel> 31 Nxg7 Kxg7 32 Qg3+ Now the black can't play 32...Kf6 as 33 Qh5# is mate.> haha my friend black can't play(Kf6) cause its illegal move! there ara a rock in f1! did u forget that?!>

You are quite right! There are TWO reason why 32...Kf6 is no good. I only saw one of them. :)

Sep-08-07  PAWNTOEFOUR: <ellhares> shredder found this line in 4:32 at almost 90 million nodes...sometimes you just have to let these programs run for a while....but i don't think an 1800 rated player would have found this line eitha......i think it takes a sharper eye than that
Sep-08-07
Premium Chessgames Member
  fm avari viraf: A very complex position where White is very strong in the center & can initiate attack on Black Kingside but it seems that Black's dark coloured Bishop was a hurdle & so the logical continuation would be 29.Rxe7 Qxe7 30.Nf5 Qd7 this looks good. But 31.Nxg7! this should win for White as there is no sound defense for Black. If 30...Kxg7 31.Qf6+ Kg8 32.Bd4 with inevitable mate. As there are so many alternatives for Black it is not possible to predict the text moves still the end.
Sep-08-07  PAWNTOEFOUR: <ellhares>........www.rybkachess.com
Sep-08-07  aazqua: Given that you know it's a puzzle, it's pretty obvious. After the initial brilliance white's play is a little suspect - 36 bg7?? Rf3 is a lot nicer. Black appears to have r*p but after q*r q*q its rg3 check kh8 followed by the nifty bg7 kg8 nh6 mate.
Sep-08-07  greensfield: 29.Rxe7 stands out as an interesting play then 29...Qxe7 30.Nf5 threatening the Queen and g pawn or Nh6+.Now what's blacks best move?
Sep-08-07  mallocks: <beginner64>
Looking at the black responses to the moves and giving Rybka a 5 minute thinking time:

After 35.Nf5
14-ply (-15.67) 35...Ra8 36.Bg7 Qxf5 37.Rxf5 Rd6 38.Rg5 Rg6 39.Rxg6 and so on

After 35.Nh5
17-ply (-16.26) 35...Rd6 36.Nf6+ Rxf6 37.Rxf6 a5 38.Rf5 Re8 39.Rg5+ and so on

So as <Some call me Tim> pointed out, they're both easily winning moves, but from the silicon monster's point of view the played move still holds the edge.

For the record, with the suggested rebuttal to 35.Nh5, 35...f5?, Rybka sees a considerably greater advantage for White; after 36.Nf6+ a mate in 9 beginning 36...Rxf6 37.Qxf6 Rg7 38.Qd8+

I hope this helps but if not I'm sure someone who's more able at analysis with computers will be along shortly (I'm rather a novice) :)

Sep-08-07  Some call me Tim: <mallocks> Yes thank you (and Rybka) for correcting my faulty suggestion. If 35. Nh5 Rd6 is much better for Black but still loses. Nh5 is a good move but it is good to see a machine thinks the game move Nf5 is better.

Incidentally if you want to see a game Ghitescu is certainly not as proud of, check out his loss in 14 moves to Fischer at the 1960 Olympiad in Leipzig. Made a beginner's blunder and lost his Q. And while playing Board 1 for Rumania!

Sep-08-07
Premium Chessgames Member
  playground player: Call me old-fashioned, but I just don't see the point of letting Fritz or Rybka solve the puzzle. I saw the first several moves without a computer, and I'm no expert. Michael Crichton sometimes says he thinks computers will eventually stifle innovation and intellectual diversity, thus dooming civilization. I wonder if he's right.
Sep-09-07
Premium Chessgames Member
  al wazir: Michael Crichton is a Luddite. Civilization is in more danger from Michael Crichton than from computers.
Sep-10-07
Premium Chessgames Member
  kevin86: What happens after 39...♖d7} (?).

I guess white is a piece ahead and will win soon,but is there a KO punch?

Sep-10-07  MostlyAverageJoe: <kevin86: What happens after 39...d7>

40.Rc1

or

40.Rf3

and mate soon after either of the above.

Sep-10-07  mallocks: <playground player> Well in this case computer analysis was specifically asked for but regardless, looking around the forums I consistently see more questions asked than answered. As a chess player I'm really pretty average and although I am trying to improve in the meantime I can at least answer some questions with the help of the silicon monster.

All in all I think as long as human's still enjoy chess it's no harm to let the computers have a go; one of the areas that fascinates me the most are the occasions where the engines still fail when humans succeed.

Sep-11-07  latebishop: A small addition to the analysis. Upon 29.Rxe7!! Qxe7 30.Nf5 Qf6 I saw 31.e5! Qxe5 (forced) 32.Bd4 Qc7 33.Nh6+ Kh8 [33...gxh6 34.Qg4+ wins as in dzechiel's analysis] 34.Qf6!! Rg8 35.Nxf7 and wins
Sep-13-07  mallocks: <latebishop> In your line 32...Qc7 is a highly suspect move for black, walking into a mate in 3 [33.Nh6+ Kh8 34.Bxg7+ Kxg7 35.Qf6#].

There are certainly alternatives, for example 32...Qxd4 (33.Nxd4 Nxe5) which at least prevents an imminent checkmate threat, even though it loses the Queen for a Pawn and a Bishop.

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