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Martyn Kravtsiv vs Yuri Vovk
Lvov (2004)
Modern Defense: King Pawn Fianchetto (B06)  ·  1-0



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sac: 11.d5 PGN: download | view | print Help: general | java-troubleshooting

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Kibitzer's Corner
Premium Chessgames Member
  GrahamClayton: 12. dxc6! is a lovely zwischenzug -
14. c7 & 14. d7 look pretty good moves as well.
Dec-04-20  areknames: Black can't allow that d6 pawn to live, 10...Qxd6 must be played with a good position but even 11...Qxd6 isn't too late. 11.d5 is a nifty move though, interesting position and POTD.
Dec-04-20  Brenin: I rejected 11 d5 on account of 11 ... Qxd6, which seems to give Black a decent position. I couldn't see anything better than 11 Ne4 Nd5 12 dxe7 Nxe3 13 exd8=Q+ Kxd8 14 Re1, which nets White a P but leaves Black counterplay after 14 ... Bh6 15 Kb1 f5.
Dec-04-20  saturn2: I went with 11.d5 opening lines and fiagonales

11...Nxd5 12. Nxd5 cxd5 13. Bb5+ Bd7 14. Rxd5
white is attacking

11...Qxd6 12. dxc6 Qc7 13. Qd4 f6 14. Nb5 and white serms winning

11....bxc3 12 dxc6 Be6 14 d7+ wins back the piece and king still in the middle

Premium Chessgames Member
  OhioChessFan: Black played on far too long.
Dec-04-20  vajeer: <Brenin: I rejected 11 d5 on account of 11 ... Qxd6, which seems to give Black a decent position.> I was also hoping to see something more forcing, but can't find it after 11...Qxd6. However, even in this line White ends up a pawn up and should be able to grind out a victory.
Dec-04-20  Cellist: I saw 11. d5 and every move that followed up to 17, where I wanted to play Qe8+ (which also wins clearly). I considered 11. ... Qxd6, which keeps the game level, but the combination after 11. ... bxc3 was so beautiful that I forgot to check out this mundane but effective Black reply. To OhioChessFan: Black was building up a decent mating net around the White K, threatening mate-in-1 by move 22, and I think this hope would justify playing on.
Dec-04-20  goodevans: <saturn2> 11...Qxd6 12.dxc6 Qc7 13.Qd4 <bxc3> 14.Qxh8 cxb2+ is way too messy for my liking. White may be the exchange up but his K is now even more precarious than black's.

Against 11...Qxd6 12.dxc6 Qc7 white does have <13.Nb5! Qxc6 14.Nd6+> and black is toast.

So black must find an alternative to 12...Qc7 and the only good one is <12...Qe6>. Black is a pawn down but other than that he's fine. If white tries too hard to take advantage of the temporary weakness at d8 he can come unstuck, e.g. 3.Qd2 f6 14.Qd8+? Kf7 and (what I missed when I 'solved' the puzzle this morning) the threat of 15...Bh6+ will win black at least the N.

Premium Chessgames Member
  agb2002: White has a bishop, a knight and a pawn for the bishop pair.

Black threatens bxc3.

White's better development suggests 11.d5:

A) 11... bxc3 12.dxc6 cxb2+ 13.Kb1

A.1) 13... a6 (due to Bb5)

A.1.a) 14.d7+ Bxd7 (14... Nxd7 15.Qc3 Bb7 -due to c7- 16.cxd7+ and 17.Qxh8) 15.cxd7+ Nxd7 unclear.

A.1.b) 14.c7 Qd7 15.Qxb6, with the threat Qb8, looks winning.

A.2) 13... e6 14.d7+

A.2.a) 14... Ke7 15.Qc5+ (or 15.c7 directly) 15... Kf6 16.Qc3+ e5 17.c7 wins decisive material.

A.2.b) 14... Bxd7 15.cxd7+ Ke7 (15... Nxd7 16.Bb5 is winning) 16.Qc5+ Kf6 17.Qc3+ e5 18.f4 seems to win.

A.2.c) 14... Nxd7 15.cxd7+ Bxd7 16.Bb5 as above.

A.3) 13... f6 14.d7+

A.3.a) 14... Kf7 15.c7 wins decisive material.

A.3.b) 14... B(N)xd7 15.cxd7+ looks similar to previous lines.

B) 11... Nxd5 12.Nxd5 cxd5 13.Qe5 f6 14.Qxd5 followed by dxe7 keeps the extra pawn.

C) 11... cxd5 12.Nxd5

C.1) 12... Qxd6 13.Nxb6 Qxb7 14.Qe5 f6 15.Bb5+ Kf7 16.Qd5+ wins an exchange.

C.2) 12... Nxd5 13.Rxd5 keeps the extra pawn.

D) 11... Bd7 12.dxc6

D.1) 12... Bxc6 13.dxe7 Qxe7 14.Ne4 keeps the extra pawn.

D.2) 12... bxc3 13.cxd7+ Qxd7 14.Qxc3 f6 15.Qe3 (15.exd7? Bh6+ wins) wins another pawn.

Dec-04-20  Honey Blend: After 11. d5 ♕xd6 12. dxc6 there's no other good place for the Queen but 12. ... ♕e6. Now white has to save ♘c3 with either 13. ♕xe6 ♗xe6 14. ♘e4 ♗h6+ 15. ♔b1 ♗d5 and the c-pawn will soon fall, or 13. ♕d4 ♗h6+ 14. ♔b1 O-O 15. ♕xb4 ♕xc6. White still has an undeveloped kingside in either scenario and has some catching up to do.
Dec-04-20  landshark: I got the first move right on positional / attacking principles - <open lines to utilize pieces already in place> - we'll see how I fare in guess-the-move mode...
Dec-04-20  landshark: ....and the game went along lines I already decided I'd be comfortable to play. As of 13. Kb1 white has all the open lines and attacking chances -
Dec-04-20  RandomVisitor: After 10...b4, 11.d5 appears strong but black can survive by clever moves which prevent white from building any sustainable pressure

click for larger view

Found 510 tablebases
NNUE evaluation using nn-62ef826d1a6d.nnue enabled

<63/80 2:32:21 +0.12 11.d5 Qxd6 12.dxc6 Qe6 13.Qd2 f6 14.Nd5 Qxd5 15.Qxd5 Nxd5 16.Rxd5 e5> 17.Bd3 Be6 18.Ra5 Kd8 19.f4 Bh6 20.Ne2 Bg4 21.g3 Kc7

Dec-04-20  sfm: Outstanding game! White crosses fingers and jumps into it with a lion's heart. Inspired counterplay by Black, dangerous to the last move. But White does not slip.

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