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

ANALYSIS [x]

FEN COPIED

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sac: 39.Rf7+ PGN: download | view | print Help: general | java-troubleshooting

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 3 OF 3 ·  Later Kibitzing>
Apr-28-06  YouRang: <Open Defence> But after 41...Re6, I think 42. Ra8+ will be mate shortly.
Apr-28-06  fgh: I got this one complete. Nice puzzle.
Apr-28-06
Premium Chessgames Member
  Richard Taylor: I solved this - I found the key move immediately it is clear that White is winning - Black needed to do better against the English varition of the Najdorf - someone played f3 v me and I got a good game by getting d5 in... The combination played was excellent by White and also his overall attack was instructive.
Jan-22-20  Cheapo by the Dozen: White wants to divert Black's queen and, surprisingly, the forceful 39 Rf7+ diversion actually works!

I'll confess, however, to not having worked through every nuance of avoiding perpetual check. :)

Jan-22-20
Premium Chessgames Member
  agb2002: Black threatens Rxd6.

White can simplify the position with 39.Rf7+ Qxf7 40.Qh8+ Qg8 41.Qf6+ Qf7 (41... Ke8 42.Qe7#) 42.Qxd8+:

A) 42... Kg7 43.Qc7

A.1) 43... Qxc7 44.Qxc7 and 45.c8=Q wins.

A.2) 43... Kf8 44.d7 followed by d8=Q.

A.3) 43... c3 44.d7 Qf1+ 45.Ka2 Qf7+ 46.b3 Qf2 47.d8=Q+ Kh6 48.Qxe3 wins.

B) 42... Qe8 43.Qc7 as above (43... Qa8 44.d7 Ke7 45.d8=Q+ wins).

Jan-22-20  ndg2: I started with the right idea 39.Tf7, but couldn't make it work after 41..Qe8, because I couldn't imagine how forcing 43.Qc7 already is. Pawn d6 is unstoppable and will queen. There's no perpetual and no black queen/king combo can interfere and block the white d pawn.
Jan-22-20  Walter Glattke: Petite combinaison with rook change, forces d-pawn transformation. 37.-Rxd6 38.Qh7+ Kf8 39.Rb7 Rd1+ 40.Ka2 Qf6 I am not sure, whether 37.-c4 is a blunder.
Jan-22-20  mel gibson: I wish I would have looked longer -
it seems simple once you're shown.

Stockfish 10 says mate in 24:

39. Rf7+

(39. Rf7+ (♖e7-f7+ ♕f6xf7 ♕h7-h8+ ♕f7-g8 ♕h8-f6+ ♕g8-f7 ♕f6xd8+ ♔f8-g7 d6-d7 c4-c3 b2xc3 ♕f7-f1+ ♔b1-b2 ♕f1-f7 ♕d8-c8 ♕f7-f5 d7-d8♕ ♕f5xc8 ♕d8xc8 a6-a5 ♕c8-c7+ ♔g7-f6 ♕c7xa5 g6-g5 ♕a5xb5 g5-g4 ♔b2-a2 ♔f6-e6 a3-a4 g4-g3 a4-a5 g3-g2 ♕b5-c6+ ♔e6-e7 ♕c6xg2 ♔e7-f7 ♕g2-f3+ ♔f7-g6 a5-a6 ♔g6-g7 ♕f3-f5 ♔g7-g8 a6-a7 ♔g8-g7 a7-a8♕ ♔g7-h6 ♕a8-f8+) +M24/52 248)

Jan-22-20  saturn2: I looked at 39. Rf7+ 

39...Qxf7 40. Qh8+ Qg8 (Ke8 41.Qe7 mate) 41. Qf6+ Qf7 42. Qxd8+ Kg7 

and the advanced free pawn decides for example 43. d7 Qf8 44. Qc8 

Jan-22-20
Premium Chessgames Member
  woldsmandriffield: 39 Rd7 is also very strong.
Jan-22-20  GlennOliver: If today's puzzle was "Medium / Easy" then I despair for my game.

Not only is White's key winning move 39. Rf7 entirely counter-intuitive to a lesser player.

The seemingly natural White consolidation move 45. c3 cedes the draw -

45. c3 Qe1+ 46. Ka2 Qd1 etc.

Jan-22-20  GlennOliver: I mean playing the natural but mistaken move 45. c3 rather than Mamedov's correct winning move of 45. Qc8
Jan-22-20  goodevans: <Walter Glattke: [...] I am not sure, whether 37.-c4 is a blunder.>

Depriving his own Q of the c4 square certainly hampered black's defence so I would say it was.

Imagine the same combo if instead he'd played <37...a5>. After <38.Qh7+ Kf8 39.Rf7+ Qxf7 40.Qh8+ Qg8 41.Qf6+ Qf7 42.Qxd8+ Qe8> we reach this position.


click for larger view

If white now tries <43.Qc7> as in the game then black has <43...Qe1+ 44.Ka2 Qe2>


click for larger view

... and the threat of repetition with <45...Qc4+ 46.Kb1 Qf1+> prevents white making any further progress.

Jan-22-20  TheaN: What a forcing show of deflections here. Pretty unique queen maneuver; after <39.Rf7+! Qxf7 40.Qh8+ Qg8 41.Qf6+ Qf7 (Ke8 42.Qe7#) 42.Qxd8+ Qe8 (Kg7 43.Qc7 +-)> the queens have 'danced' around the short diagonals and the f-file, essentially just trading rooks. The key is that it's White to move in a favorable position.

Initially I thought White could force the 'dance' back with 43.Qf6+? Qf7? (if Black plays it methodologically) 44.Qh8+ Qg8 45.Qxg8+! +- and the d-pawn wins it. However, after 43....Kg8 White is tempos short to bring the d-pawn home, and 44.d7?! Qxd7 45.Qxg6+ with 46.Qxa6 ⩲ is unlikely enough for the win.

However, then you notice the simple <43.Qc7 +-> and you realize Black's helpless against the d-pawn because the king's cut off. Everything that follows is just technique and avoiding the perpetual.

Jan-22-20
Premium Chessgames Member
  chrisowen: Chummy vintur cavein rf7rub fungus vintra roflub foneur 12 13 resrub qf7rub foneur vintra qh8rub hutchy qg8rub grubby reuvra qf6rub finish qf7rub foneur vintra qd8rub dutchy qe8rub evicty qc7rub clumpy pb4rub buntra vintra vintur pb4rub baddys dunks it ever more 44Qe5 vestra vintra goodhu vintur fluffo ebbbug budums maters havers vintur dunks it ever more 44Qe1 vestra vintra goodhu vintur fluffo ebbbug budums maters havers vintur rugguv chummy quicky jackon its vastur mistle vintur vowlug videla pebble vintur doilys vintur flewsy jitzan its vastur vintur thrill maceum vintur pobdyi vintur duffra vintur rugguv jazits mindra vowlug videla rf7rub fungus vintra foneum fracky vintur cainum dumbus vintra dunks its civvyin 37c4 vestra resuka vintur eyeebb crunks reuvra 17 18 resrub cavein dunks its avarice 37a5 vestra cogons vintur eyebb reuvra 1 2 it ok vowins vintur umsums duffra gitcar vintra vintur effect hovely it was gulfho rf7rub foneur?
Jan-22-20
Premium Chessgames Member
  chrisowen: The winding road nah?
Jan-22-20
Premium Chessgames Member
  laskereshevsky: See quite easily the line Rf7+/Qh8+/Qf6+/Qxd8+, but here on the 2 possible B's defences (Qe8/Kg7) took me a quite long tought to see Qc7...
Jan-22-20  Momentum Man: I found all the moves through 42.Qxd8+

I am ok with this

Jan-22-20  Damenlaeuferbauer: After long pondering, my old Azeri friend Rauf, who was just 13 years young, when the game was played, finally found 39.Rf7+!,Qxf7 40.Qh8+,Qg8 41.Qf6+,Qf7 42.Qxd8+,Qe8 (42.-,Kg7 43.Qc7! +-), but should have continued 43.Qc7! +-. In both cases, white will get a second queen.
Jan-22-20  AlicesKnight: Found the right line; after regaining the R White will queen the P and the question is how Black will prolong things.
Jan-22-20  samvega: Witty combination. Put a smile on my face.
Jan-22-20
Premium Chessgames Member
  gawain: Very instructive puzzle. (No, I did not get it.)
Jan-22-20  saturn2: <goodevens> After <37...a5 instead of c4> black could be lost anyway if white apllies the game combo

38. Qh7+ Kf8 39. Rf7+ Qxf7 40. Qh8+ Qg841. Qf6+ - Qf7 42. Qxd8+ Qe8 

<by 43.Qxa5 instead of Qc7> Kf7 (Qd7 44. Qc7 Ke8) 44. Qc7+ Ke6 45. Qxc5

I dont see a good move 37 for black but it is not a Stockfish analysis.

Jan-23-20
Premium Chessgames Member
  Check It Out: This combination made a lot more sense on second look.
Jan-23-20  goodevans: <saturn2: [...] I dont see a good move 37 for black...>

White is definitely better in this position whatever black plays. My point (or, to give credit where it's due, <Walter Glattke>'s point) was that <37...c4?> turned the position from bad to completely lost.

Against your suggested <43.Qxa5> I would again threaten perpetual with <43...Qe2>. White may still win from there but there's work to do.

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