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Dmitry Svetushkin vs Vivian-Nicolae Varaciuc
Iasi Open (2014), Iasi ROU, rd 2, May-11
Formation: King's Indian Attack (A07)  ·  1-0



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find similar games 1 more D Svetushkin/V Varaciuc game
sac: 19.Qg4 PGN: download | view | print Help: general | java-troubleshooting

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Kibitzer's Corner
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Aug-09-15  LucB: What <Penguincw> said! :)
Aug-09-15  goldfarbdj: I got the first move right, which is better than I usually do on a Sunday.
Aug-09-15  Steve.Patzer: I got yesterday's puzzle right, but on this one I was torn between 15. Bxh6 and 15. Nf6+
Premium Chessgames Member
  An Englishman: Good Evening: A position with the characteristic pawn structure from the KIA vs. the French Defense. In this formation, at least five sacrifices are possible (Neg5, Nfg5, Bxh6, Bg5 and Nf6+), but depending on the specific position, all five could prove unsound!

Here I chose the correct move, thinking that 15...gxf6; 16.exf6,Qd8; 17.fxe7,Qxe7 would prove advantageous. I also saw that after the combination's second move, White threatened 17.Qe4! with mate on h7. Thus ending the first 7/7 week I have had in a long, long time.

Aug-09-15  diagonalley: well, finding the first move wasn't hard... but i completely failed to anticipate 15..... K-R1 (and in any case would never have dreamt of white's incredible follow-up!) <diagonalley>: nul points :-(
Aug-09-15  mel gibson: Deep Rybka 4 64 bit gives the same move:

but gives only a score of +1.39 for white with the following moves at depth 19:

15.Ne4-f6+ Kg8-h8
16.Nf3-g5 g7-g6
17 Ng5-e4 b5 x c4
18 d3 xc4

Therefore the game is almost a draw.

Aug-09-15  Gilmoy: I actually toyed with 15.Ng5 <first>. It's worth a think, and then you can prune it with proof.

So it was in my smite-board. <15.Nf6+> is thematic, Black won't accept, and then do the other Knight. It feels right for many reasons, briefly: if he <cannot> accept your 1st sac, then you <must> sac again before he regroups. White's dense pack uncoils with <piece flow> that just replaces any sacs, and Black will run out of pawns way before White runs out of K-side attack.

Aug-09-15  Afroim: I don't see big advantage if 15... N:f6 and then 16... Bd7. Is it correct?
Aug-09-15  whiteshark: I tried so hard that blood had coming out of my eyes, blood coming out of my wherever...
Aug-09-15  patzer2: Today's Sunday puzzle solution 15. Nf6+! and it's follow-up 15...Kh8 16. Ng5 reminded me of MC Hammer's song lyric "You can't touch this."

Got the first two moves in the combination easy enough, but was surprised by 17...e5. So it took me a while to see 18. fxg7+ Kxf7 19. Qg4!

In the final position, it's mate-in-five after 22...f5 23. Bd5+ Rf7 24. Qg6+ Kh8 25. Qxf7 Nf6 26. Qf8+ Kh7 27. Qh6#.

Black's decisive mistake was the casual 14...Rb8??, allowing 15. Nf6+! Instead, 14...Qb6 = or 14...Bb7 = hold the position.

P.S.: Where this Sunday puzzle gets super difficult is trying to figure out a win after Black's best defense 16...g6 with 17. Ngh7! or 17. Nge4 .

Aug-09-15  wooden nickel: <whiteshark: I tried so hard that blood had coming out of my eyes, blood coming out of my wherever...> LOL :-) ... I cracked up on that one!
The leading move 15.Nf6+ wasn't too hard since the Black King's defenders are a bit off base. I'll just pretend I got 16.Ng5!... at least I enjoyed it.

click for larger view

The sideline 15... Bxf6 16.exf6 e5 would give a new puzzle White to play and win!

click for larger view

17.fxg7 ...

Aug-09-15  morfishine: I had <15.Nf6+> and continued <15...Kh8> but then went straight for <16.Qe4> when Black obliges with <16...g6> and now <17.Ng5> but this move-order isn't as good as what was played, namely <16.Ng5> and misses the important aspect of leaving the Queen on <e2> enabling continued immediate access to the h-file :(


Aug-09-15  Tiggler: After 15. Nf6+ Kh8 16.Ng5 g6 white has nothing better than 17.Nge4 and black is still in the game.
Aug-09-15  morfishine: <Tiggler> Interesting post, move-order. I wonder if White has time for 17.Ngh7 (instead of your 17.Nge4) trying to reduce clutter while also trying to nab an exchange

click for larger view

At least for me, these busy positions are hardest to visualize


Aug-09-15  patzer2: <morfishine><tiggler> Running Deep Fritz 14 x 64 on a 3.6 GHZ i7-4790 with 16 GB RAM on a long move-by-move look to at least 21 depth on each move yields a likely win for White after 16...g6 17. Ngh7!:

<16... g6 17. Ngh7!> Diagram below:

click for larger view

<17...Rd8 18. b3 bxc4>

[18... Rb6 19. Nxd7 Bxd7 20. Nf6 Kg7 21. h5 Rh8 22. Qg4 Qd8 23. hxg6 fxg6 24. Rac1 h5 25. Qg5 Be8 26. Be4 Bf7 27. Kg2 bxc4 28. dxc4 Nxe5 29. Qxe5 Bxf6 30. Qxc5 Rb8 31. Bxb8 Qxb8 32. Qc6 h4 33. Qb7 Qxb7 34. Bxb7 hxg3 35. fxg3 e5 36. Bd5 to (+1.98 @ 25 depth);

18... Kg7 19. Qd2 Kh8 20.
Bxh6 (+3.00 @ 20 depth)]

<19. bxc4 Rb6 20. Nxd7 Bxd7>

[20... Kxh7 21. Nxb6 (+3.05 @ 21 depth)]

<21. Nf6 Rdb8>

[21... Kg7 22. Rab1 Rb4 23. a3 Rxb1 24. Rxb1 Rc8 25. Qd2 (+2.51 @ 24 depth)]

<22. Nxd7 Qxd7 23. Bxh6 Kg8>

[23... Kh7 24. Bf4 Kh8 25. h5 g5 26. Bc1 to (+1.65 @ 23 depth)]

<24. h5 Qe8 25. Qg4 Bf8 26. Bxc6 Qxc6 27. Bg5 Qe8 28. Qh4 Qc6 29. Bf6 g5 30. Qg4Kh7 31. Bxg5 Bg7 32. h6 Bh8 33. Be7 Re8 34. Bd6 Rg8 35. Qh5 Rb7 36. Rab1 Rd7 37. a4 Bf6 38. exf6 Qxd6 39. Re5 Rg6 40. Rxc5 Qf8 41. Qe5 Qd6 42. Qxd6 Rxd6 43. Rb7 Rxf6 44. g4 Rxh6 45. Rxf7+ Kg8 46. Re7 Rd8 47. Kg2 Rb8 48. f3 Rf6 49. Rcc7 Rb2+ 50. Kg3 Rd2 51. Rg7+ Kh8 52. Rh7+ Kg8 53. Rcg7+ Kf8 54. Ra7 Kg8 55. Rhg7+ Kf8 56. g5 Rf5 57. Kg4 Rh2 58. f4 Rh1 59. a5 > (+9.68 @ 23 depth).

P.S. I'm far from certain about the accuracy of this Deep Fritz 14 assessment, but it's enough to convince me 16...g6 17. Ngh7! to gives White excellent winning chances.

Aug-09-15  agb2002: The material is complete.

White's dark square bishop x-rays the black queen and the light square bishop does the same with the knight on c6. This suggests 15.Nf6+:

A) 15... gxf6 16.exf6 Bd6 17.Nxd4 Nxf6 (17... Nxd4 18.Qg4+ and 19.Qg7#) 18.Nxc6 Rb6 19.Ne5 with an extra pawn and a much better position (threatens Bxh6).

B) 15... Kh8 16.Qe4

B.1) 16... gxf6 17.exf6 Bd6 18.Bxd6 Qxd6 19.Qg4+ and 20.Qg7#.

B.2) 16... Nxf6 17.exf6 Bd6 18.Bxd6 (18.fxg7+ Kxg7 19.Bxh6+ Kxh6 20.Ng5 f5 21.Qxc6 Qxc6 22.Bxc6 bxc4 23.dxc4 Rxb2 does not seem to be advantageous) 18... Qxd6 19.fxg7+ Kxg7 20.Qg4+ looks good for White.

B.3) 16... g6 17.Bxh6 is very bad for Black.

Aug-09-15  patzer2: <agb2002> After 15. Nf6+ Kh8 16. Qe4? gxf6 17. exf6 Bd6 18. Bxd6 Qxd6 (diagram below)

click for larger view

19. Qg4 is not with check. If 19. Qg4, then 19...Nxf6 .

Aug-09-15  wooden nickel: <chrisowen: 16...g6 17.Nd5 Qa5 18.Nxe7 Nxe7 19.Ne4 equal and have cream has again pieces around black monarch eg win king's a pave flow flap...> I always enjoy your circumlocution and grandiloquence which also gives a good answer to the 16... g6 variation!
Aug-09-15  patzer2: <wooden nickel><chrisowen> Great find on the interesting 16...g6 17. Nd5!?

Fritz 14 analyzes 16... g6 17. Nd5!? exd5 18. e6 Bd6 19. Nxf7+ Rxf7 20. exf7 Kg7 21. Qe8 Nf8 22. Qxf8+ Kxf8 23. Bxd5 Be6 24. Bxd6+ Qxd6 25. Rxe6 Qxe6 26. Bxe6 Ne5 27. cxb5 Rxb5 28. b3 Rb6 29. Bc4 Nxc4 30. dxc4 Kxf7 31. Re1 (+ 0.70 @ 29 depth).

Premium Chessgames Member
  chrisowen: <wooden nickel> <patzer2> Said as wander swerve ignoble mission success glorious ascension back mind a good one
Aug-09-15  Cheapo by the Dozen: I gave up so quickly that I didn't see the discovered attack on the queen from exf6.
Aug-09-15  Coriolis: As a guess I went for: 15. Nf6+ Kh8 16. Ng5 g6 17. Nxe6 fxe6 18. Qg4.
Aug-09-15  morfishine: <patzer2> Thanks for the analysis: This is not an easy position to break down visually. <17.Ngh7> is purely an OTB intuitive move that I would play for the reasons given: If Fritz awards an (!) I'll take it! :)


Aug-09-15  Tiggler: <morfishine> and <Patzer2> After 15.Nf6+ Kh8 16.Ng5 g6 17.Ngh7, the best continuation appears to be (found with help of Houdini 1.5):

17.. Rd8 18. b3 bxc4 19. bxc4 Nxf6 20. Nxf6 Bb7 21. Bxh6 Qxe5 22. Qxe5 Nxe5 23. Rxe5 Bxf6 24. Rxc5 Bxg2 25. Kxg2

click for larger view

White has a protected passer to the good, but still a lot of work to do.

Aug-10-15  agb2002: <patzer2: <agb2002> ...

19. Qg4 is not with check.>

Yes, thank you. I noticed this in another line but forgot this one.

The puzzle deserved much more time than I had.

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