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Edvins Kengis vs Eduard Gufeld
16th Soviet Team-ch final A (1983), Moscow URS, rd 3, Jul-??
Sicilian Defense: Delayed Alapin (B50)  ·  1-0

ANALYSIS [x]

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 2 OF 2 ·  Later Kibitzing>
Aug-17-21
Premium Chessgames Member
  al wazir: My solution was 46. Rd8 Rc2 47. Nxf8 Qxf8 48. Qe6+ Kh7 49. Rxf8 any 50. Qg8#.

If 46...d1=Q, then 47. Rxd1 Nxg6 (to prevent 48. Rd8) 48. hxg6 Qe7 49. Qe6+ Kf8 (49...Qxe6 50. Rd8+ Qe8 51. Rxe8#) 50. Rd8+ Qxd8 51. Qf7#.

And in this line, if instead 47...Ne6 48. Qxe6 Qxe6 49. Rd8+ Qe8 50. Rxe8+ Kf7 (50...Kh7 51. Rh8#) 51. Rf8#

But that isn't "easy."

Aug-17-21  saturn2: <al wazir 46...Rd8 d1 47.Rxd1>

47...Qc7 and I dont see a win for white

Aug-17-21  Walter Glattke: ***" "not easy, that." My German tastatur changed letters, better in netter, too in top, and not in bot, I must correct then, I. apologize.
Aug-17-21
Premium Chessgames Member
  FSR: Beautiful!
Aug-17-21  Walter Glattke: After 47.-Qc7 48.Nxf8 Kxf8 49.Rd7 Al Wazir wins not against Saturn: 49.-Qc8 50.Qe6 Qe8 51.Qd6+ Kg8 52.g4 Rc2 53.Qd5+ Kh8 54.Qb7 Qf8 55.Kg3 a5
Aug-17-21
Premium Chessgames Member
  agb2002: White is two pawns down.

Black threatens d1=Q and Rxc8.

The black queen prevents a mate in two starting with Rxf8+. This suggests 46.Qe6:

A) 46... Qxe6 47.Rxf8+ Kh7 48.Rh8#.

B) 46... d1=Q 47.Rxf8+ as in A.

C) 46... Rxc8 47.Ne7+

C.1) 47... Kh7 48.Qxf7

C.1.a) 48... d1=Q 49.Qg8#.

C.1.b) 48... Nd7 49.Nf5 Rg8 (49... d1=Q 50.Qxg7#) 50.Qxd7, followed by the capture of the d-pawn, wins.

C.1.c) 48... Ne6 49.Nxc8 d1=Q (49... Nd4 50.Ne7 and mate in two) 50.Ne7 Qd8 51.Qxe6 + - [N vs p].

C.1.d) 48... Ng6 49.hxg6+ Kh8 50.Nxc8 d1=Q# 51.Qf8#.

C.2) 47... Kh8 48.Qxf7

C.2.a) 48... Nd7 49.Ng6+ Kh7 50.Qxd7 as in C.1.b.

C.2.b) 48... Ne6 49.Nxc8 as in C.1.c.

C.2.c) 48... Ng6 49.Nxc8 d1=Q 50.Qe8+ Nf8 (50... Kh7 51.hxg6#) 51.Ne7 Qb3 52.Qxf8+ as in C.1.c.

D) 46... Kh7 47.Rxf8 Qxf8 48.Nxf8+ wins.

Aug-17-21
Premium Chessgames Member
  Teyss: Thursday already? Time flies.

My reference for estimating the difficulty of a puzzle is agb2002's number of lines. <agb2002> thanks again for being so thorough and regular, I follow all your variations to make sure I didn't forget anything and better appreciate the beauty of the combination.

For info Black's previous move 45...Rxc5 is actually not a blunder as highlighted above. Black is probably already lost after 39...Rc1 cutting the BR from the back row.

Aug-17-21  Cellist: Above my head and definitely a bit complicated for Tuesday! I wanted to play Rxf8+, followed by Qe6+, but that only leads to a draw: =0.00 (48 ply) 46...Qxf8 47.Qe6+ Qf7 48.Ne7+ Kf8 49.Ng6+.
Aug-17-21
Premium Chessgames Member
  keypusher: I eventually saw 46. Qe6 only because everything else seemed to lose. Beautiful combination, seems a bit much for a Tuesday. There?s still lots to think about after 46?Rxc8.
Aug-17-21  Brenin: <Teyss>: You're right about 39 ... Rc1 and the back rank: after 40 Rc8 Black is lost. Instead, SF gives 39 ... Rb8 40 f4 Rd8 41 Nd6 Qd7 42 Nf5 =.
Aug-17-21  goodevans: No prospect of 7/7 for me this week. Not that 7/7 is a regular occurrence for me but it hurts to lose the opportunity this early in the week.

My only consolation is that, as several have said, this is a bit tough for a Tuesday. There are several lines to examine (see <agb2002>) and even if you can envisage the position four moves into the game continuation it's not completely obvious that it's winning for White.


click for larger view

White is a pawn down and although Black's N is en pris if it's taken straight away then ...Qxh5+ will make it difficult to bring home the point. White's next move, <50.Ne7!>, is key, tying the Black Q to defence and allowing the unhindered capture of the N.

But it's not over yet. Black can force White away from the mate threats by advancing his extra pawn and potentially freeing his Q. To fully solve the puzzle I reckon you need to be able to see how White can tie Black's Q back down after capturing the P and if you did all that then you did a whole lot better than me.

Tuesday, "Easy" indeed!

Aug-17-21
Premium Chessgames Member
  chrisowen: Vestige keyinus vindicate Qe6 garcons aeschylus othello i vestige keyinus vindicate movements fluctuate i keyinus flab its bail quarries keyinus raw its war plonkus keyinus prankus hog its doughty keyinus duty its lim have its cubs keyinus wood its trespass etcetera keyinus ore its eco its eh cobra its up keins its hoddles keyinus flickus Qe6 brash;
Aug-17-21  Lambda: Missed this one. I calculated that 46.Rxf8+ led to a perpetual, and failing to have any brighter ideas, concluded that it was white to play and draw.
Aug-17-21  Whitehat1963: Tuesday? I was not even close!
Aug-17-21
Premium Chessgames Member
  Teyss: <Brenin> Thanks for confirming.

<goodevans> Well spotted about 50.Ne7 instead of 50.Qxe6. I was also wondering why the WQ came back to f7 on move 52, seems like a waste of time. Actually after 53.Nf5 it forces the BQ to stay on g8 so the WQ has all the time to pick the aP, controlling the 7th rank and eyeing g7.

White could have reversed, playing 52.Nf5 and then 53.Qf7, but 52.Qf7 first is more precise, keeping control of f8. Black could have avoided this with 51...Qe8 but it's a lost cause anyhow.

Aug-17-21  Nosnibor: There is also a pretty finish if Black plays 47...Rc7 48,Rxf8+ Kh8.49, Rh8 ++
Aug-17-21
Premium Chessgames Member
  Jimfromprovidence: I played the position with Droidfish, which traces black's losing move to 39... Rc1, below, instead of the correct 39...Rb8.


click for larger view

You can trace the play from here on, where the inactive rook on c1 gives black's queen too much to defend against.

Aug-17-21  timeclimber: I didn't know it was Friday already!
Aug-17-21  The Kings Domain: Real nice puzzle. Missed this one. Tough b*tch.
Aug-17-21
Premium Chessgames Member
  drollere: ha, this was far trickier than it looked. i started with 46. Qd7 Qxd7, 47. Rxf8+ Kh7, 48. Rh8#. except that fails to 46. .. Rxc8. so the correct move had to be 46. Qe6. but the variations after that were bewildering.
Aug-17-21  sp12: How about:

46...Rxc8 47. Ne7+ Kh8 48. Qxf7 Ne6 49. NxR d1 to queening...

Aug-18-21  sp12: sheesh- didn't even see the whole game play out!
Aug-18-21
Premium Chessgames Member
  al wazir: <saturn2: 46.Rd8 d1 47.Rxd1 47...Qc7 and I dont see a win for white>.

I think 48. Nxf8 Kxf8 49. Qh7 wins.

For example, 49...Kf7 50. Qh8, with 51. Rd8 to follow, or 49...Qf7 50. Qh8+ (50...Qg8 51. Rd8+) Ke7 51. Qd8+ Ke6 52. Rd6#

But I haven't looked at all lines. It's really complicated.

Aug-18-21
Premium Chessgames Member
  agb2002: <Teyss> Thanks to you!
Aug-18-21  johnnydeep: [drollere: ha, this was far trickier than it looked. i started with 46. Qd7 Qxd7, 47. Rxf8+ Kh7, 48. Rh8#. except that fails to 46. .. Rxc8. so the correct move had to be 46. Qe6. but the variations after that were bewildering.]

Exactly, and ditto!

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