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Sethuraman P Sethuraman vs Zhou Jianchao
2nd CHN-IND Summit (2017), Liaocheng CHN, rd 3, Mar-07
Italian Game: Giuoco Pianissimo. Normal (C50)  ·  1-0

ANALYSIS [x]

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 2 OF 2 ·  Later Kibitzing>
Apr-10-20  Granny O Doul: Not sure how this becomes a quiz position. With 21. Nc4 White moves his attacked piece to a better square where it attacks something, meanwhile uncovering a defense of White's c pawn. Even if you don't notice the incidental threat to win Black's queen, how do you not play it?
Apr-10-20  Brenin: 21 Nc4 seemed obvious, defending c3 and threatening to trap the Q. I expected Black to save her with Qd7, but after 22 Nxe5 Qe8 23 f4 his opposition looks grim, a pawn down with all pieces except the K on the rim. Why didn't Black play 20 ... Qxc3 instead of Rd8?
Apr-10-20
Premium Chessgames Member
  OhioChessFan: I really don't understand 28. Ne7. Why not Nxh6?
Apr-10-20  Brenin: <OhioChessFan: I really don't understand 28. Ne7. Why not Nxh6?> Presumably White was playing safe, and forcing the exchange of light-squared bishops. There are plenty of winning moves in this position, provided White avoids the obvious blunder 28 Qxe4 Bd5.
Apr-10-20  Walter Glattke: Why Ne7 is more beautiful, I think 28.Nxh6 or 28.Qxe4 will win, too.
Apr-10-20  SpamIAm: <OhioChessFan>, perhaps white passed on 28.Nxh6 because he didn't like the complications after 28...Nxf2+.
Apr-10-20  Mfrankpsyd: Straightforward problem. Blacks queen has no place to go so either 21. Nc4 or maybe start with Rd1. What I dont get is why Black didnt take the offered knight with 13... gxf3. What am I missing?
Apr-10-20  Brenin: <Mfranksyd> After 13 ... gxf3 14 Qxf3 White doesn't seem to have much compensation for the piece, but what can Black do while White builds up the pressure with Rfd1 (or Rfe1) and N-f1-g3-h5?
Apr-10-20  goodevans: <GrannyODoul> Agreed. I looked in vain for alternatives to 21.Nc4 and having settled on 21.Nc4 I was convinced that I would be wrong. Surely that would be far too simple for a Friday puzzle?

There are few options for black's reply. <21...Qd7 22.Nxe5> clearly favours white and the only other reasonable alternative to the game move is <21...b5> but white quickly gets a nice advantage after either <22.Rd1> or <22.Nxe5>.

The only move that seems to offer black any chances is <21...Be6> but <22.Rd1 Qxd1 23.Bxd1 Bxc4 24.Nf5+ Kh7 25.Be2 Be6 26.Bxg4> isn't hard to see. That's as far as I got but I reckon it's far enough to say I solved it. After all <26...Nf6> could also have been met quite happily with <27.f3>.

Apr-10-20
Premium Chessgames Member
  speleman: Agree with <Brenin>. 13..Ne7 seems to be a mistake. After 13..gxf3 14. Qxf3 Nb8, 15. d4 Nbd7 black has time to build up defence around the king.
Apr-10-20
Premium Chessgames Member
  chrisowen: Just give me your loving,
Apr-10-20  goodevans: <raju17: 22. NxP is equally good>

Good spot. I never even considered that.

After <21.Nc4 Be6 22.Nxe5 Qd6> it looks as though white has both the Bb3 and Ne5 attacked forcing <23.Bxe6> which doesn't look as good for white as the game line.

But...

The B really isn't under attack since
<23...Bxb3?> loses the Q to <24.Nf5+>. That means white can instead just protect the N with <23.f4> and things are once again looking very good for white.

Apr-10-20
Premium Chessgames Member
  agb2002: White has a bishop and a knight for the bishop pair.

Black threatens Qxd1 and Qxc3.

Without the f-pawn White would deliver mate in two. However, after 21.f4 Qxd2 22.fxe5 Qxe1 23.Raxe1 Be6 White is lost.

The black queen lacks mobility and Black's e-pawn is defenseless. These details suggest Nc4 and Ndf3.

In the case of 21.Nc4:

A) 21... Qd7 22.Rd1 Qe7 23.Rxd8 Qxd7 24.Nxe5 wins a pawn at least.

B) 21... b5 22.Nxe5 (probably better than 22.Rd1 bxc4 23.Rxd3 cxd3) 22... Qd6 23.Nxf7 and 24.Nxd8 wins decisive material.

C) 21... Be6 22.Nxe5 (22.Rd1 Bxc4 23.Rxd3 Bxd3 looks uncomfortable) 22... Qd6 23.Nxg4 wins two pawns (23... Bxb3 24.Nf5+).

Apr-10-20
Premium Chessgames Member
  agb2002: I made a mess with several ideas: 23.Nxg4 loses to the obvious 23... Bxg4. However 23.f4 is very good if not winning for White.
Apr-10-20  Walter Glattke: A2) I think, 21.-Qd7 22.Nf5+ Kf6 23.f4 seems strong
Apr-10-20  petemccabe: I'm just a 1500 player, but I can not for the life of me understand how black could play 21 Be6. He must have noticed the threat of Nxe4. He must have at least considered what he would do if white played that, at which point he should have noticed his queen was stuck. Anyone can make a mistake but that seems really extreme to me.
Apr-10-20  Walter Glattke: For weaker players I say, one must always hold open a backway for the bishop in the early opening phase, or it could be catched by pawn attack; and Rd8 here close the backway for the queen in a similar sense.
Apr-10-20  mel gibson: I didn't know.

Stockfish 11 says:

21.Nc4

(21. Nc4 (♘d2-c4 ♗c8-e6 ♖a1-d1 ♗e6xc4 ♖d1xd3 ♗c4xd3 f2-f4 ♗d3xf1 ♕e1xf1 ♖d8-d2 f4xe5 ♖d2-f2 ♕f1-d1 h6-h5 h2-h3 ♘g8-h6 e5-e6 f7xe6 ♗b3xe6 ♖a8-f8 ♗e6-c4 b7-b5 ♕d1-d7+ ♘h6-f7 ♕d7xc7 ♗a7-b8 ♕c7-b6 ♘f7-e5 a4xb5 a6xb5 ♗c4xb5 ♖f2-f6 ♕b6-e3 ♔g7-h8 ♗b5-e2 g4xh3 ♘h4-f5 ♘e5-g4 ♕e3-g5 ♖f6xf5 e4xf5) +4.00/35 84)

score for White +4.00 depth 35

Apr-10-20  Brenin: <petemccabe> 21 ... Be6 is actually Black's least worst move. He's going to lose his queen to 22 Rd1, or else play 21 ... Qd7 22 Nxe5 Qe8 23 f4, a retreat abut as appetising as Napoleon's from Moscow. By playing Be6 he gets a rook and white's light-squared bishop in compensation for the queen, with an outside chance of a long-diagonal swindle such as (in the game continuation) 28 Qxe4?? Bd5. Unfortunately, he is already hopelessly lost, whatever does.
Apr-10-20  Walter Glattke: Option for 21.-Be6 with a worse end was 21.-Nf6 22.Rd1 Qxe4+ 23.Qxe4 Nxe4 24.Rxd8 b5 with mate threatenings; 25.Rxc8 Rxc8 26.Nxe5 and one piece for white.
Apr-10-20  saturn2: I only looked 21.Ndf3

21.. Qd622.Rd1Qe723.Rxd8Qxd8
24.Nxe5white wins a pawn

21...gxf322.Rd1 Q for R+N

Apr-10-20  Brenin: <WalterGlattke> I hadn't seen that nice line with 24 ... b5, but then isn't 25 Na5 better than Rxc8 for White?
Apr-10-20
Premium Chessgames Member
  chrisowen: Good point na na na bb3 I would'nt fancy that black, wooh wooh at brits no jd?
Apr-10-20  erniecohen: After 21.♘c4 ♗e6 22.♖d1 ♗xc4 23.♖xd3 ♗xd3 24.♖g1 is no better than even. So you get credit for the POD only if you find the exchange sac 24.f4.
Apr-11-20  TheBish: The real question I have about this game is, why didn't Black play 20...Qxc3? It seems that Black will also be getting the b4 pawn as well. The analysis board engine shows that Black is better, ∓.
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