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Alexander Ostapenko vs S Kurkin
"Kurkin Up a Head of Steam" (game of the day Sep-10-2006)
USSR (1970)
Sicilian Defense: Scheveningen. Tal Variation (B82)  ·  1-0
ANALYSIS [x]

FEN COPIED

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sac: 19.e6 PGN: download | view | print Help: general | java-troubleshooting

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 5 OF 5 ·  Later Kibitzing>
Apr-29-18
Premium Chessgames Member
  ChessHigherCat: I missed the game line 18-double-espresso defense with 21....Bg5+

These guys are fantastic, how come I've never heard of either one of them before? I mean if this game had been played in Gashimov it would probably have been voted one of the best games in the tournament, right?

Apr-29-18  FSR: Wow. I just looked at 19.exd6 and couldn't make it work. This is insane stuff.
Apr-29-18  Walter Glattke: 30.-dxe4 31.Re7++ Kf8 32.Bh4+ Kg8 33.Bf7+ Kf8 34.Bb3+ Qf5 35.Rxf5# 32.-Qf5 33.Rxf5+ Kg8 34.Bf7+ Kh8 35.Bf6+ or 34.-Kf8 35.Bb3#
Apr-29-18
Premium Chessgames Member
  An Englishman: Good Evening: Actually solved this one, and wanted to claim my first 7/7 of 2018, but I can't--commented on this game on 10 Sept 2006, so I already knew the game.
Apr-29-18
Premium Chessgames Member
  ChessHigherCat: I just looked back over the earlier kibbitzes and found our old (now extinct?) Tyranosaurian friend <Random Visitor>'s claim that e6 was one of the 110 best moves ever made: https://timkr.home.xs4all.nl/chess/...

It's probably held in such high esteem because anyone's first impulse (including mine) is to win the bishop with 19. exd6 instead, and then there is the temptation to win the DSB directly after that but they all let the king escape. Luckily, I noticed that the pressure on f7 was much more useful than winning the bishop.

Apr-29-18  Cheapo by the Dozen: I was in the exd6 crowd as well.
Apr-29-18
Premium Chessgames Member
  morfishine: Great Sunday puzzle! Truly insane!
Apr-29-18  WorstPlayerEver: 19. e6 puts exclusive pressure on the kingside, did not see it... *starts crying in an uncontrollable manner*
Apr-29-18
Premium Chessgames Member
  malt: First impression was 19.ed6 went for

19.e6 gh6 20.gh6+ Kf8 21.Rdf1 f6 22.Rg7 Rc7 23.B:f6 B:f6 24.R:f6+ Ke8 25.Bh6+ Rf7 [25...Kd8 26.Rf8+ Be8 27.R:e8# ]26.Rf:f7 Kd8 27.Rg8+ Be8 28.R:e8#

22...Ke8 23.Rg8+ Bf8 24.B:f6 Rc7 25.Bh5+ Rf7 26.B:f7#

Apr-29-18
Premium Chessgames Member
  malt: <morfishine:Great Sunday puzzle!Truly insane!>

Agree

Apr-29-18  clement41: A nice line occurs following 18...gh? 19 gh Kh8 20 ed f6 21 de Rf7 22 Bh5 and the Rf7 is lost plus black’s king is in big trouble. For ex, 22...Ba4 23 Bf7 Qa6 (protecting f6) 24 (ed threatening Be6 that intercepts the 6th rank hereby threatening Bf6# ) Rc8 25 b3 Bd7 (...Be8?? Rg8#) 26 Be6! +-
Apr-29-18
Premium Chessgames Member
  agb2002: Black threatens gxh6 and Qxa2.

White can attack the black king with 19.exd6:

A) 19... gxh6 20.gxh6+

A.1) 20... Kf8 21.Rg8+ Kxg8 22.dxe7 f5(6) 23.Bh5 and 24.Rg1#.

A.2) 20... Bg5 21.Rxg5+ Kf8 22.Rdg1

A.2.a) 22... f5 23.Bh5 followed by 24.Rg8#.

A.2.b) 22... f6 23.Bh5 fxg5 24.Rf1+ Kg8 25.Bf7+ Kf8 26.Bg7#.

A.2.c) 22... Ke8 23.Bg4

A.2.c.i) 23... f5 24.Bxf5 and mate soon (24... Kf7 25.Rg7+ Ke(f)8 26.Rg8+ Kf7 27.R1g7#).

A.2.c.ii) 23... f6 24.Rg8+ Kf7 25.Rg7+ Ke(f)8 26.Be6 and 27.Rg8#.

A.2.c.iii) 23... Kf8 24.Rg8+ Kxg8 25.Bd7+ Kf8 26.Bg7+ Kg8 27.Bf6+ Kf8 28.Be7#.

B) 19... Bf8 20.Rg4

B.1) 20... gxh6 21.gxh6+ Bg7 22.Rxg7+ Kf8 (22... Kh8 23.Rg6+ f6 24.Bxf6#) 23.Rdg1 is similar to A.2.

B.2) 20... g6 21.Qxh7+ Kxh7 22.Rh4+ and mate in two.

B.3) 20... f6(5) 21.gxf6 Kf7 22.Rxg7+

B.3.a) 22... Bxg7 23.Qxg7+ Ke6(8) 24.Qe7#.

B.3.b) 22... Ke6 23.Bg4+ Kxd6 24.Qf4#.

B.3.c) 22... Ke8 23.f7+ and mate soon (23... Kd7 24.Bg4+ etc.).

Apr-29-18
Premium Chessgames Member
  agb2002: I missed 23... Be8 in my line A.1. I should pay more attention to backward moves.
Apr-29-18  mel gibson: I wasn't sure if sacrificing the Queen would work. My Stockfish has a slightly different answer to the text solution.

Stockfish 9, 64 bit on an i7 Quad core says:

19. e6

(19. e6
(e5-e6 g7xh6 g5xh6+ ♔g8-f8 ♖d1-f1 ♗c6-e8 ♗d4-g7+ ♔f8-g8 ♗e2-h5 ♗e7-g5+ ♖g1xg5 ♕a5-c7 c2-c3 b4xc3 ♗g7xc3+ ♔g8-f8 e6xf7 ♗e8xf7 ♖g5-g7 ♕c7-d7 ♖f1xf7+ ♕d7xf7 ♖g7xf7+ ♔f8-g8 ♖f7-g7+ ♔g8-f8 ♔c1-d2 ♖c8xc3 b2xc3 d5xe4 ♖g7xh7 ♔f8-g8 ♖h7-g7+ ♔g8-h8 ♗h5-g6 d6-d5 ♖g7-h7+ ♔h8-g8 ♖h7-d7 ♔g8-h8 ♔d2-e3 a7-a6 ♗g6-f5 ♖a8-b8 ♖d7xd5 ♖b8-f8 ♖d5-e5 ♖f8-d8 ♖e5-e7 a6-a5 ♖e7-f7 ♔h8-g8 ♖f7-g7+ ♔g8-h8 ♗f5-g6 a5-a4) +8.08/39 182)

score for White +8.08 depth 39.

When Black resigns it says:

30. Rxf7 dxe4
(d5xe4 ♖f7-e7+ ♔e8-d8 ♗h5-g4 ♗c6-d7 ♖e7xd7+ ♔d8-c8 ♗f6-e5 ♕a5-c7 ♖f1-f7 ♕c7xd7 ♖f7xd7 d6xe5 ♖d7xh7+ ♔c8-b8 ♖h7-f7 b4-b3 h6-h7 b3xa2 h7-h8♕+) -M10/64 49

mate in 10.

Apr-29-18  nisharaj31: What is the refutation of 21....f6?
Apr-29-18  mel gibson: <Apr-29-18 nisharaj31: What is the refutation of 21....f6?>

mate in 13

21. Rdf1 Bg5+

(21. .. f6 22. Rg7 (♖g1-g7 ♗c6-e8 ♗d4xf6 ♖c8xc2+ ♔c1xc2 ♗e8-f7 ♖g7xf7+ ♔f8-e8 ♖f7xe7+ ♔e8-d8 ♖e7xh7+ ♔d8-c8 ♗f6-c3 ♕a5-a4+ ♔c2-b1 ♕a4-e8 ♗e2-a6+ ♔c8-d8 ♗c3-f6+ ♕e8-e7 ♖h7xe7 d5xe4 ♖e7-g7+ ♔d8-e8 ♖g7-g8+) +M13/46 23)

Apr-29-18  WorstPlayerEver: <nisharaj31>

21...f6 22. Rg7 Ke8 23. Rg8+ Bf8 24. Bxf6 dxe4 25. Bh4 Qf5 26. Rxf5 Bd5 27. Rfxf8#


click for larger view

21... f6 22. Rg7 Be8 23. Bxf6 Rxc2+ 24. Kxc2 Bf7 25. Rxf7+ Ke8 26. Rxe7+ Kd8 27. Rxh7+ Kc8 28. Bc3 Qa4+ 29. Kb1 Qe8 30. Ba6+ Kb8 31. Bxb4 Qd8 32. Rb7+ Kc8 33. Rb5+ Kc7 34. Rc1#


click for larger view

21... f6 22. Rg7 Bd8 23. Bxf6 Bxf6 24. e7+ Ke8 25. Bh5+ Kd7 26. e8=Q#


click for larger view

Apr-29-18  outplayer: The most difficult move for me to find was the quiet 21.Rdf1.
Apr-29-18  landshark: My first impulse was 19.e6 with a quick look at the next 4 moves after which it got murky for me. Then I saw exd6 and liked how taking the B on e7 helped corral the K with 19. exd6 gxh6 20. dxe7 but missed 20... h5! which saves the day.
Apr-29-18
Premium Chessgames Member
  Sneaky: I was able to make 19.Qxg7+ work by having Black make some really terrible moves. :)
Apr-29-18  landshark: In the game, where's the win after 24... Rxf7? If 25. Bh5 Qc7 26. Bf6 Kf8 holds. What's White got here?
Apr-29-18  njchess: This doesn't seem that tough to me. There are only 3 choices: 1. ♕xg7 2. exd6 or 3. e6. I ruled out ♕xg7 because White's g-pawn would still be blocking the rook supporting it (in other words, the g-pawn needed to recapture so White could check with the rook, gaining an all important tempi). exd6 seemed promising since it stood a good chance of taking Black's bishop, but then what? e5 would support it but it's slow and also blocks the bishop; the attack just seemed to stall. That left 19. e6! gxh6 20. gxh6+ ♔f8 21. ♖df1 +- Time to check.
Apr-29-18
Premium Chessgames Member
  Breunor: landshark, this is the line that Fritz gives after 24 .... Rxf7:

+3.43 (31 ply) 25.Bh5 Qc5 26.Kb1 Qe3 27.Rgf5 Qh3 28.Bxf7+ Ke7 29.exd5 Bd7 30.R5f3 Qg2 31.Bg6 hxg6 32.Re1+ Be6 33.Rxe6+ Kd8 34.Rxd6+ Kc7 35.Rdf6 Re8 36.a3 Qxh2 37.axb4 Kb8 38.Rf1 Rd8 39.Rf7 Ka8 40.c4 g5 41.Bf6 Rc8 42.h7 Qh3 43.Rc1 g4 44.h8=Q Rxh8 45.Bxh8 Qxh8 46.d6 g3 47.d7

Apr-29-18
Premium Chessgames Member
  Jimfromprovidence: <landshark> <In the game, where's the win after 24... Rxf7? If 25. Bh5 Qc7 26. Bf6 Kf8 holds. What's White got here?>

Instead of 26 Bf6, try 26 Bd4.


click for larger view

The threat is 27 Rg8+, so after 26...Kf8 either 27 Rxf7+ or 27 Bxf7 seem to work.

Apr-29-18  leRevenant: Sunday queensac.
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