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Rauf Mamedov vs David Shengelia
Batumi Open (2001), Batumi GEO, rd 8, Jul-04
Sicilian Defense: Najdorf Variation (B90)  ·  1-0

ANALYSIS [x]

FEN COPIED

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find similar games 1 more R Mamedov/D Shengelia game
sac: 39.Rf7+ PGN: download | view | print Help: general | java-troubleshooting

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 1 OF 3 ·  Later Kibitzing>
Apr-28-06  makaveli52: funny :), I didnt see Qc7 cause i thought something else first and decided in a hurry. Awesome position though, very easy for a friday
Apr-28-06  blingice: That was pretty simple. I got it in under a minute. I saw that Mamedov wanted to get the queen to the eighth rank, and to move the queen, you had to sac the rook. After I saw the rook sac, the queen check was obvious. Qg8 was forced, and the way to regain the rook was Qf6, and the queen block was also forced, because mate would follow Ke8. Once the rook is regained, promoting the pawn with the queen's guard seemed easy.
Apr-28-06  stanleys: Nice combination!It took me about 30 seconds to calculate it to the end
Apr-28-06  Gypsy: A pretty cool combo.
Apr-28-06  ckr: Missed it completely, but learned something. CG, Nice One.
Apr-28-06  EXIDE: On the 37 th. move what happens if Black plays RxP instead of c4 ? Nice ending missed it.
Apr-28-06  gamer945094: If 37. ... Rxd6, then 38. Qc8+ where black must trade queen for rook to prevent mate
Apr-28-06  Nomen Nescio: Very clever. It took me only 4 hours.
Apr-28-06  patzer2: For today's puzzle solution, the decoy 39. Rf7+ forces a winning double attack to win back the sacrificed rook, while the follow up 43. Qc7! assures a winning passed pawn.
Apr-28-06  Confuse: white pulls a cute one for us. gg
Apr-28-06  Montreal1666: Why did black play 43)...b4
Apr-28-06  patzer2: <Why did black play 43...b4> Opening the a-file for a possible swindle via perpetual check with the Queen is my guess. However, it amounts to nothing more than frustration and futile momentum in a clearly lost position.
Apr-28-06  United33: 43.Qc7!! is the key of today puzzle. i can't find this move although i can find until 42.Qxd8+ Nice puzzle, u got me today.
Apr-28-06  chesswonders: I think 39. ♖e6 also wins
Apr-28-06  mago de riga: nice puzzle
Apr-28-06  Nostrils: It is remarkable that from move 32 to move 41 the defence of the d pawn is implicit.
Apr-28-06  DWINS: <chesswonders>, I don't think 39.Re6 wins, because after 39...Qxe6 40.Qh8+ Kf7 41.Qxd8 Qe8 42.Qc7+ Ke6 White won't be able to hold onto his d-pawn.
Apr-28-06  Mattsparov: Exide. Answer to your question: 37 ... RxP 38.Qc8+ Qf8 39. Re8 ... and white collects queen for rook (i think). ps I missed it too.
Apr-28-06  eaglewing: <Montreal1666> and <Patzer2> You asked:

Why 43. ... b4?

Before b4, White's threat was 44. d7.
If White ignores b4, there might be a danger to either be perpetualled or lose the pawn d7. If ignored, Black should try to swindle like this:

43. Qc7 b4
44. d7 Qd1+
45. Ka2 b3+
46. cb cb+
47. Kxb3 Qd1 or e6+

I don't know/checked the result, but hiding the King won't be easy. The pawns a3/b2 are not enough. To get cover from the own Queen means marching along the abc-files and there is a critical black-covered point at b5.

If it is still winable, it would cost more time and care, so 44.ab was in order.

Apr-28-06  chesskoff: It looks like black missed a pawn from an overloaded queen: 17 ... Bxd5! 18 Qxd5 Qxa5.
Apr-28-06  TheUnkraut: Nice one! But a bit unfair: there is more than one solution, and i wondered if i missed the strongest
Apr-28-06  dakgootje: <chesskoff> doesnt he win that pawn back at b7? 17. ...Bxd5 18. Qxd5 Qxa5 19. Bxc5 dxc5 (or Qxc5) 20. Qxb7... but there might be less adorable consequences after Rb8 and there might be an quite serious attack on whites king. Or maybe white can attack himself a bit with something like 19. Bc4...

< I think 39. Re6 also wins> How's that? because for me it looks more like its losing for white... Well okay, maybe not immediately losing maybe, but the text move looks certainly better

Apr-28-06  chesswonders: thanks, <DWINS>
Apr-28-06  eaglewing: <chesskoff> Without nearer analysis: Black might feel uncomfortable following

17 ... Bxd5! (?)
18 Qxd5 Qxa5 19 Bc4 Rf8 20 g6 hg 21 Rdg1

Apr-28-06  Halldor: Missed the key move 43.♕c7! Anyway, very good puzzle - a lot to learn from it!
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