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Ian Nepomniachtchi vs Alexandr Kharitonov
Russian Team Championship (2009), Dagomys, rd 1, Apr-04
Nimzo-Indian Defense: Panov Attack. Main Line (B14)  ·  1-0



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Given 14 times; par: 77 [what's this?]

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sac: 28.Rxc7+ PGN: download | view | print Help: general | java-troubleshooting

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 4 OF 4 ·  Later Kibitzing>
Dec-11-09  Winston Smith: Okay now I see if black takes the queen he ends up down a rook.
Premium Chessgames Member
  fm avari viraf: At first site, the position looks very challenging but going little deeper one realises that Black is in jeopardy & the course of action becomes clear with the galloping Knights rampaging Black's Kingdom. Therefore, 25.Ngxf7 Rxf7 26.Qh6+ [ if ...Qxh6 then 26.Nxf7+ the fork trick ] 26...Kg8 27.Nxf7 Kxf7 28.Rxc7+! Qxc7 [ if ...Nxc7 then 29.Bxb7 ] 29.Bxd5 as Black can't play ...Bxd5 otherwise he would lose the Queen. Again, White will win a second pawn & the ending is a won game for White.
Dec-12-09  Al2009: CHESSTTCAMPS, you asked me to indicate books in which you can find written evidence of the old rule according to which in a same position a faster win is better than another one taking more moves.

Among many books, I can suggest you the most famous: “My 60 memorable games” by Bobby Fischer ( surely a competent player, isn’t he?), in which the rule above is underlined many times:

1) Game Fischer – Larsen 1958 (page 22) : after move 31. Qd6+ ….”A mistake! Qh6+ forces mate in three”

2) Game Fischer – Celle 1964 (page 310) after move 27. Qg4 ….” Here I forgot Lasker’s maxim. 27. Qe7+ would have forced mate in four…”

3) Game Fischer – Bednarsky 1966 (page 342), after move 17. Qe2+! “ By now I was hunting for a bigger game than the paltry win of a Queen after 17. Nf6+, gxf6 18. Bxf7 + “ (Fischer refuses to win a Queen to get a faster win). See also the comment to the game above by Larry Evans (pag. 338): “…By move 12 Fischer obtains a formation at which he had had success even as a child. Naturally he wins, but THE ECONOMY with which he does so is delightful.” ….

Therefore, it is clear that winning a game saving moves is better, it’s an implicit rule well known by everybody.

But this is also a scientific rule (chess is a scientific game), which is well known in physics, mechanics, math, logics, etc., and is named “least action principle” after XIX century's scientist Hamilton.

Between two options in the same situation , nature tends to choose the one taking least actions than the other.

Dec-12-09  Al2009: Fischer himself explains in his book “My 60 memorable games” another very important reason why it is always preferable to win by saving moves, whenever possible.

In his game Fischer – Julius Bolbochan, 1962 (page 215): “Objectively best is 25. Nxe7+ Qxe7 26. Rxa6 Rfe8 27. a4! But I was hoping to win in the middle game. Ironically, I wouldn’t been awarded the brilliancy prize had I chosen the best line here. They don’t give medals for endgame technique!”

This is an old and well known rule: some tournament organizers award players brilliancy prizes and money, but you cannot win them in the endgame, even playing like Capablanca, or Grigorjev.

Nepomniachtchi entered an endgame, but he could win in the middle game, so his choice was a mistake.

Dec-11-10  notyetagm:
Jan-01-11  notyetagm: <patzer2: For today's Friday puzzle solution, White's demolition 25. Ngxf7!! sets off a chain of surprising deflection sham sacrifices and a Knight Fork threat which enables him to go up a couple of pawns and simplify to an easily won ending.>

One of Nepomniachtchi's Best Games.

Game Collection: Nepomniachtchi's Best Games

Jan-01-11  notyetagm: I Nepomniachtchi vs A A Kharitonov, 2009

Feb-09-12  pericles of athens: wow fantastic game. great play by nepo.
May-20-14  mathlover: A good combination to win 2 pawns.
Dec-31-16  YouRang: Saturday 25.?

click for larger view

White has lots of firepower aimed at Pg6, which is just in front of black's weakly guarded king. So, how about we undermine its support, push the king to the edge of the board, and bring in yet another strong attacker with <25.Nxh7 Kxh7 26.Qg5>

click for larger view

Black is now facing some threats:

(1) the threat of Nxf7 ...Rxf7 Qxg6+ ...Kh8 Qxf7

(2) the threat of a rook lift Bxg6, Re4 and Rh4.

If black guards Pf7 via <26...Kg7>, I can take Pg6 instead! <27.Nxg6 f6 28.Qg4 Kf7 29.Qh5>

If black guards Pg6 via <26...Ne7>, then <27.Bxb7>

Overall, I'm pretty pleased with this.


I see that in the game, white found a flashier and perhaps stronger combination starting with 25.Ngxf7. In fact, this is a recycled problem from 2009, and back then I even saw that flashy line myself.

I was flashier back in 2009. Nowadays, I am more into "modest flashiness". ;-)

Dec-31-16  TheBish: I Nepomniachtchi vs A A Kharitonov, 2009

White to play (25.?) "Very Difficult"

With two knights near the enemy king and queen, it's natural to look for forks. It just happens that White has a way to set one up.

25. Ngxf7! Rxf7

Otherwise, after 25...Qe7 26. Qh6+ Kg8 (26...Kf6 27. Qxh7 with dual threats of Qxg6# and Ng4#, and if 27...Qe8 28. Qh4+ Kg7 29. Qh6+ Kf6 30. Qg5+ Kg7 31. Qxg6#) 27. Bxg6! White wins major material or mates, e.g. 27...Nf6 (27...hxg6 28. Qxg6#) 28. Bxh7+ Nxh7 29. Qxg6#, and even 27...Rxf7 doesn't help since 28. Bxf7+ Kh8 29. Ng6 is mate, so here Black would have to toss in the queen with 28...Qxf7 29. Nxf7 Kxf7.

26. Qh6+! Kg8

The only try, since 26...Kxh6 27. Nxf7+ (the fork!) Kg7 28. Nxd6 is an easy win.

27. Nxf7 Kxf7 28. Qxh7+ Ke8 (not 28...Kf8? 29. Bxg6 Qe7 30. Qh8#) and now White can choose between 29. Bxg6+ with a rook and three pawns for two knights (and a continuing attack), and 29. Rxc7 Nxc7 (29...Qxc7 30. Qxc7 Nxc7 31. Bxb7) 30. Bxb7. There's a lot to study here, and now to see the game!

Dec-31-16  mel gibson: I saw the move & the computer agrees
although some moves after are different.

25. Ngxf7 (25.
Ngxf7 (♘g5xf7 ♖f8xf7 ♕d2-h6+ ♔g7-g8 ♘e5xf7 ♕d6-f8 ♕h6xf8+ ♖a8xf8 ♗e4xd5 ♘c7xd5 ♘f7-d6 ♗b7-a6 g2-g3 ♖f8-d8 ♖e1xe6 ♔g8-f8 ♘d6-e4 ♖d8-d7 ♖e6-d6 ♔f8-e7 ♖d6xd7+ ♔e7xd7 ♘e4-g5 h7-h5 f2-f3 ♗a6-b5 ♔g1-f2 ♘d5-e7 ♔f2-e3 ♗b5-c6 ♔e3-d3) +4.65/20 146)

score = +4.65 depth 20

Dec-31-16  morfishine: Seen this game already, very nice combination, not too difficult to spot


Dec-31-16  AlicesKnight: Missed the Q incursion. An attractive combination leading "only" to a won R+P ending.
Dec-31-16  whiteshark: <[ECO "E54"] <1. e4 c6 2. d4 d5 3. exd5 cxd5 4. c4>>

I see!

Premium Chessgames Member
  perfidious: <whiteshark: <[ECO "E54"] <1. e4 c6 2. d4 d5 3. exd5 cxd5 4. c4>>

Here is another way to a QP opening after the once-common 6....Be7, instead of 6....Bb4: 7.cxd5 Nxd5 8.Bd3 Nc6 9.0-0 0-0 10.Re1 Bf6 11.Be4 Nce7 and we have reached a position from the Semi-Tarrasch beginning with 6.e3 (ECO D42).

Premium Chessgames Member
  agb2002: The material is identical.

White can start an attack against the black king with 25.Ngxf7:

A) 25... Rxf7 26.Qh6+

A.1) 26... Kxh6 27.Nxf7+ Kg7 (27... Kh5 28.Bf3+ Kh4 29.g3+ Kh3 30.Ng5#) 28.Nxd6 + - [R+P vs N].

A.2) 26... Kf6 27.Nxf7 Kxf7 28.Qxh7+ followed by Bxg6 or Qxg6 + - [R+3P vs 2N].

A.3) 26... Kg8 27.Nxf7 Kxf7 transposes to A.2.

A.4) 26... Kh8 27.Nxf7+ Kg8 28.Nxd6 wins.

B) 25... Qe7 26.Qh6+

B.1) 26... Kf6 27.Bxg6 Qe8 (27... hxg6 28.Qxg6#) 28.Qg5+ Kg7 29.B<anywhere but h7>#.

B.2) 26... Kg8 27.Bxg6 Rxf7 28.hxg6 Qxg6# (or Qh8#).

Dec-31-16  The Kings Domain: Tough and good puzzle. Top-notch game, Nepomniachtchi unleashes his inner Anderssen.

Happy New Year to all. 😊

Dec-31-16  RandomVisitor: After 21.Ne4

click for larger view


<-0.13/34 21...Nf5> 22.Bb5 Rf8 23.Ng3 Rc8 24.Nxf5+ exf5 25.Rc1 Rxc1 26.Rxc1 f6 27.Nc6 Qa8 28.Nb4 Rf7 29.f3 Qd8 30.Nxd5 Bxd5 31.Rc3 Qd6 32.g3 Re7 33.Kf2 g5 34.Re3 Rxe3 35.Qxe3 a5 36.Bd3 Qd7 37.Qe2 Bf7 38.Qe3 b5 39.Be2 Bd5 40.Qd2 Bb3

Dec-31-16  psmith: <JimfromProvidence> 24... f6 25. Nxh7 Kxh7 26. Nxg6 looks good for White.
Dec-31-16  Everett: <Therefore, it is clear that winning a game saving moves is better, it’s an implicit rule well known by everybody.

But this is also a scientific rule (chess is a scientific game), which is well known in physics, mechanics, math, logics, etc., and is named “least action principle” after XIX century's scientist Hamilton.

Between two options in the same situation , nature tends to choose the one taking least actions than the other.>

Each game is played in a larger context, say, a multi-round tournament, a long WC match, etc. In such instances, Efficiency can also be found in conserving energy for future rounds by playing a sure yet less taxing and slower win, yet a win nonetheless.

With the clock ticking, often one does not have the time to work out all the intricacies and complexities of a potential winning combination of moves, thus pragmatism will often be the better and often the more effective way to go to ensure greater success in the long haul.

Dec-31-16  johngalt5579: I am confused about the solution but I think it involves Ngf7 and Ng4.
Dec-31-16  johngalt5579: Aah! did not see Qh6!
Dec-31-16  King.Arthur.Brazil: I see that Nc7 was theme of combination due to Ne6+ possibility, but didn't see Qh6+ directly, but had seen Rxc7! After all, the win in the endgame seem to throw out all the briliancy expected before. It's nothing wrong, yes, white win but didn't seem too good. But this is the last 2016'y game and I'd like to whish you all very happy new year, even if my comment will be cut off afterwards. Hope that 2017 get us together in this Kibi's corner again. Thank so much chess webmaster too.
Dec-31-16  ColeTrane: CG's engine actually saw it today. I however did not.
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