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Baadur Aleksandrovich Jobava vs Robert Hovhannisyan
Qatar Masters (2014), Doha QAT, rd 6, Dec-01
Italian Game: Bird's Attack (C53)  ·  1-0

ANALYSIS [x]

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 2 OF 2 ·  Later Kibitzing>
Dec-13-15  diagonalley: the first couple of moves aren't difficult to spot, but OTB i would have probably been content to regain the pawn and come out with B+N in exchange for a rook... (not a bad deal?)
Dec-13-15
Premium Chessgames Member
  patzer2: I got the first two moves of today's Sunday puzzle with 25. Rxc5 dxc5 26. Ngxe5, but after 26...Kh7 I went with the Bishop capture 27. Nxc6 (+3.58 @ 25 depth, Deep Fritz 14) which appears to be just about as strong as the game continuation 27. Nxf7 (+3.62 @ 22 depth, Deep Fritz 14).
Dec-13-15  mel gibson: I didn't see this one.
DR4 64 bit saw it with only
10 plies ahead.
Dec-13-15  kubbybulin: Gave it the fifty cent effort (no board, no notebook, and a half cup of yesterday's coffee) and saw that black had no reasonable way to meet 27. Nf7 and settled. The kingside is decimated and the black king will be a duck in a shooting gallery. I'll take a half-point. Of course, Ms. Gunina saw all the way to 35. g7 while her coffee was still brewing.
Dec-13-15
Premium Chessgames Member
  An Englishman: Good Evening: Surprised that I found a winning line and that it (27.Nxc6) was only .04 worse than the best winning line (27.Nxf7). Drat. If I hadn't missed Friday's solution, would have gone 7/7.
Dec-13-15
Premium Chessgames Member
  morfishine: <25.Rxc5> is the first move but thought using the other Knight for the second move was more aggressive <26.Nfxe5> since the Knight on <g4> holds pressure on <h6>; Oh well, I'll have to assume the follow up <26.Ngxe5> is best

*****

Dec-13-15  gofer: After only a few minutes, I wanted to play <25 Rxc5>, there are so many benefits. But I really wasn't expecting the game line. I wanted to play...

<25 Rxc5 cxd5>
<26 Nfxe5 ...>

At which point I felt black would play...

<26 ... Bd7>
<27 Bxf7+ Kh7>
<28 Bxe8 Bxe8>
<29 f5 ...>


click for larger view

<29 ... Ng6>
<30 Nxg6 Bxg6>
<31 Ne5 ...>


click for larger view

At which point white's advantage is pretty clear, but the game line looks like a slaughter! So many answered questions;

Why did black allow 27 Nxc6 and why didn't white play <27 Nxc6>?

Why did black destroy his only remaining pawn defences by playing <27 ... g6?>

All looks bizarre to me...

Dec-13-15  pth: 27 g6 looks strange. What would happen after 27 Ne6?
Dec-13-15  Lambda: There may be a complicated line after this sacrifice, but working out that 25. Rxc5 is the best move is not difficult because merely regaining material is enough to yield good positions, so I don't think you need to see it to claim success. OTB you could just take it off, then wonder which knight to take on e5 with next move, and wonder what to do next the move after that, when you've seen what reply black has chosen.
Dec-13-15
Premium Chessgames Member
  Tiggler: <morfishine: <25.Rxc5> is the first move but thought using the other Knight for the second move was more aggressive <26.Nfxe5> since the Knight on <g4> holds pressure on <h6>; Oh well, I'll have to assume the follow up <26.Ngxe5> is best>

I went with the f knight too, for similar reason. And then I was planning to capture on f7 with the bishop instead of knight. I felt that had to be winning, but too old and lazy and etcetera to find all the continuations.

Dec-13-15  JimNorCal: "27. ... g6 looks strange"
I assume black feared Nfg5+ (pxN, Qh5) and that the various side lines all work.
Dec-13-15  Pinkerton: Can Black hold with 34...Rxf7

34.Bf7 Rxf7
35.gf Rc8
36.Qh6+ Nh7
37.f8=Q+ Rxf8
38.Qxc6

White has 3 central pawns but Black is quality up and an passed pawn on a file.

Dec-13-15  thickhead: <Pinkerton:Can Black hold with 34...Rxf7 34.Bf7 Rxf7
35.gf Rc8
36.Qh6+ Nh7 >

37.Ng5
Dec-13-15  Pinkerton: Oh ok. Thank you.
Dec-13-15
Premium Chessgames Member
  agb2002: White has a bishop and a knight for the bishop pair and a pawn.

The first idea that comes to mind is 25.Rxc5 dxc5 26.Nfxe5, forking c6 and f7, 26... Rec8 (else 27.Bxf7+ Kh7 28.Bxe8 wins a pawn) and now White has the ambitious 27.Nxf7 and 27.Bxf7+, the simple 27.Nxc6 Rxc6 28.Bd5 recovering the material but probably just equalizing and the slow 27.Qf3 with the threat 28.Bxf7+ Kh8 29.Nxc6 Rxc6 30.Bd5.

I can't do more today.

Dec-13-15  zb2cr: To <pth>:

You wrote: "What would happen after 27 Ne6?"

White plays 28. Nxc6 and after getting his Knight away remains with B+N vs. R.

Dec-13-15  dark.horse: Well done exchange sac.
Dec-13-15  Zatrikion: <gofer: Why did black allow 27 Nxc6 and why didn't white play 27 Nxc6>

Maybe after 27.Nxc6 black responds with: 27..Qf6 threatening both the knight and the rook. After 28.Nce5 Rxe5 29.Nxe5 Qxe5, Black equalizes.

Dec-13-15  JohnDMaster: Easy combo, but I missed Nxf7!! of course white had to see the mating attack was going to be massive!
Dec-13-15  talfan: Tp pht, after 27...Ne6 followd Bxe6, and if Qxe6, either knigt to g5 wins the queen.
Dec-13-15  mikrohaus: I thought this was nearly perfect, as a somewhat difficult combo.

It followed nearly all my criteria (in my mind) for perfect.

I think it is within every CG person to achieve in a real game.

Dec-14-15  FlashinthePan: I can't find a winning line for White if Black plays 28...Qg6 instead of 28...g5 in the game. Am I missing something obvious?
Dec-14-15  stst: Time's up eventually..
25.Nxh6+ does not seem to be fruitful

Try
25.Rxc5 dxc5
26.Nfe5 Ne6
27.Nxh6+ gxh6
28.Qg4+ KF8
29.Qf3 Rc8
...

Dec-15-15  CHESSTTCAMPS: I didn't get a chance to work the Sunday puzzle, so I'll take an intuitive, positional approach today instead of a branched solution. The start has to be 25.Rxc5! dxc5 26.Ncxe5 forking weak f7 and Bc6. The best defense looks to be 26... Bb5, then I like 27.Nxf7! c5 28.N7xh6+! gxh6 29.Nxh6+ Kh8 (Kh7 30.Qh5) 30.dxc4 with a powerful king-side attack. I'll leave it there and review now...
Dec-15-15  CHESSTTCAMPS: There seems to be support for the alternative 26.Nfxe5 (what I intended above instead of Ncxe5), so it would be nice to see some engine analysis.
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