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Nikita Vitiugov vs Krishnan Sasikiran
Qatar Masters (2015), Doha QAT, rd 7, Dec-27
Italian Game: Classical Variation. Giuoco Pianissimo (C53)  ·  1-0

ANALYSIS [x]

FEN COPIED

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Kibitzer's Corner
Dec-28-15
Premium Chessgames Member
  chancho: <Fabiano Caruana ‏@FabianoCaruana Dec 27 <<<30.Ne8>>> in Vitiugov-Sasikiran is just so unbelievably sexy #Qatar_Masters>
May-20-16  Whitehat1963: Excellent exchange after 26...Re6. Perhaps a decent Fridayish puzzle? What's best play after white's reply?
Mar-26-17  Walter Glattke: 29.Nc7! wins a pawn by several checks, but white could play 28.b4!, too. 28.-Kh7 29.a4 f5 30.b5 Ne7 31.Nf6+ Rxf6
32.Qxf6 "why so complicated!?"
Mar-26-17  Walter Glattke: Correction: 27.b4, all one move earlier!
Mar-26-17  NBZ: I had 30. Ne6+ instead of Ne8+ but I think the result should be similar...nice combination by White.
Mar-26-17  AndrewMD: Congratulation to me!!! This is my first time to solve "insane" level of puzzle and its continuations in CG. Less than 5 mins.
Mar-26-17  petemccabe: This is the greatest combination I've ever seen to win just a pawn.
Mar-26-17
Premium Chessgames Member
  An Englishman: Good Evening: Solved Saturday and Sunday--but flubbed Wednesday, Thursday and Friday. Please tell me I'm not the only one who ever has these results.
Mar-26-17  yadasampati: <An Englishman> You are not the only one. It might be similar to a problem of many modern scientists. They have a high degree of intelligence but sometimes fail to see simple explanations, because they are looking in the wrong direction.
Mar-26-17
Premium Chessgames Member
  agb2002: The material is identical.

The knight is very close to Black's pieces. This suggests 27.Rxd4 Nxd4 28.Qxd4+:

A) 28... Kf8 29.Qh8#.

B) 28... Kg8(h7) 29.Nf6+ Rxf6 30.Qxd7 Rxd7 31.Rxd7 +/ - [P].

C) 28... f6 29.Nc7 (29.Nf4 Rd6)

C.1) 29... Qxd4 30.Nxe6+ Kf7 31.Nxd4 + - [N+P].

C.2) 29... Re7 30.Ne6+

C.2.a) 30... Qxe6 31.Qxd8 +/ - [P] (31... Qxa2 32.Qxe7+).

C.2.b) 30... Rxe6 31.Qxd7+ Rxd7 32.Rxd7+ and 33.Rxb7 + - [2P].

C.2.c) 30... Kf7 31.Nxd8+ Ke8 32.Qxd7+ Rxd7 33.Rxd7 Kxd7 34.Nxb7 + - [N+2P].

C.2.d) 30... Kg8 31.Nxd8 Qxd4 32.Rxd4 + - [N+P]. The knight is only momentarily trapped, for example, 32... Kf8 33.Rd6 Ke8 34.Ne6.

C.3) 29... Qxc7 30.Qxd8

C.3.a) 30... Qxd8 31.Rxd8 +/ - [P].

C.3.b) 30... Re7 31.Qxc7 [P].

C.3.c) 30... Qc2 31.Rd7+ Re7 32.Rxe7#.

C.4) 29... Rd6 30.Qxd6 Qxd6 31.Rxd6 Rc8 (31... Rxd6 32.Ne8+ and 33.Nxd6 + - [N+P]) 32.Rd7+ + - [N+P].

Mar-26-17
Premium Chessgames Member
  morfishine: I saw a very similar combination recently, but it wasn't this game

<27.Rxd4> followed by 28.Qxd4+

*****

Mar-26-17  RandomVisitor: 24...Re5 = .
Mar-26-17  mel gibson: Nice game.
I saw the right move fairly quickly but
didn't see any fast checkmate &
there wasn't one.
Mar-26-17  Carlos0012358: Material is even.

White's strength is on his K side and that's is where black's K is located. However, white's Q is not in play.

Activating white's Q is essential to attacking black's K. Therefore

27.Rxd4 Nxd4 28.Qxd4+ with three possible continuations

A) 28........f6 29.Nc7
B) 28........Kg8 29.Nf6+
C) 28.......Kf8. 29.Qh8+

Mar-26-17  Carlos0012358: Note that 28........Kf8 leads to 29.Qh8#, so Kf8 not a choice for black.
Mar-26-17  gofer: The first part is obvious...

<27 Rxd4 Nxd4>
<28 Qxd4+ f6>

At this point the knight can go to c7 or f4, but the f4 line has a problem, white ends up an exchanged down...

29 Nf4 Qxd4+ 30 Rxd4 Red6 31 Ne6+ Kg8!

<29 Nc7 Re7>
<30 Ne8+ Qxe8>
<31 Qxd8 Qxd8> <32 Rxd8 Re7>


click for larger view

We are in a rook and pawn end game. Isn't this a draw?

Mar-26-17  RandomVisitor: Black should try 28...Kg8 and go for the pawn-down rook ending.


click for larger view

Komodo-10.1-64bit:

<+1.10/44 27.Rxd4 Nxd4 28.Qxd4+ Kg8 29.Nf6+ Rxf6 30.Qxd7 Rxd7 31.Rxd7> Rb6 32.b3 Kg7 33.e5 Kf8 34.Kf2 Rc6 35.Kg3 b5 36.Rd6 Rc5 37.f4 a5 38.Ra6 b4 39.Kf3 Rc3+ 40.Ke4 Rg3 41.Rxa5 Rxg2 42.Kf3 Rd2 43.Ra4 h5 44.gxh5 gxh5 45.f5 Ke7 46.Kg3 Rd4 47.Ra7+ Ke8 48.f6 Rg4+ 49.Kf3 Rg5 50.Ra8+ Kd7 51.Ke4 Rg2 52.Rf8 Re2+ 53.Kf4 Ke6 54.Re8+ Kd5 55.Rd8+ Kc6 56.Rf8 Kd5

Mar-26-17
Premium Chessgames Member
  Tiggler: After 30. .. Qxd8 31.Rxd8 it is hard to believe that white can win, as <gofer> pointed out.
Mar-26-17
Premium Chessgames Member
  Tiggler: I meant 31. ..Qxd8 32.Rxd8
Mar-26-17  RandomVisitor: A final look


click for larger view

Komodo-10.1-64bit:

<+1.08/46 27.Rxd4 Nxd4 28.Qxd4+ Kg8 29.Nf6+ Rxf6 30.Qxd7 Rxd7 31.Rxd7> b5 32.Kf2 Rc6 33.Ke2 Rc2+ 34.Rd2 Rc1 35.Kd3 Kf8 36.Rc2 Rd1+ 37.Ke3 Ke7 38.a3 Ra1 39.Rc7+ Kf8 40.Rc6 Rb1 41.Rc2 Rd1 42.b4 Ra1 43.Rc3 Ke7 44.Kd4 Ra2 45.g3 Rg2 46.Rc7+ Kf8 47.Ke3 Ra2 48.Rc3 Rg2 49.e5 Rg1 50.Kf2 Ra1 51.f4 Kg7 52.Ke3 Rd1 53.Ke4 g5

Mar-26-17  neeraj sah: White is playing her 27 moov for a strong ending wow what a planing superb...

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