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Viktor Korchnoi vs Srecko Nedeljkovic
EUR-chT (Men) 1st (1957), AUT, rd 3, Aug-24
Nimzo-Indian Defense: Three Knights. Korchnoi Variation (E21)  ·  1-0



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find similar games 2 more Korchnoi/S Nedeljkovic games
sac: 31.Bxg6 PGN: download | view | print Help: general | java-troubleshooting

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Kibitzer's Corner
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Premium Chessgames Member
  LIFE Master AJ: Very nice - Black loses his Queen.
(37...Kf7; 38.Qh7+, winning.)
Sep-11-05  Madman99X: I got the first three moves, but I couldn't find the mating combination. Good puzzle.
Premium Chessgames Member
  Penguincw: Sunday puzzle, and well, I got 31.Bxg6 hxg6 32.Rxg6+, but did not see 32...Rg7. My followup move was 32...Kf8 33.Qh8# 1-0, but I did not see deep enough to calculate 32...Rg7, nor did I want to (or could I).

But looking at the solution, I see the trap that would follow if black played 33...Rxg6: 34.Qxg6+ Kf8 35.Qh6+ Ke8/Kg8 36.Qh8+ Kf7 37.Qg7+ Ke8 38.Qg8# 1-0.

Jun-12-16  jith1207: Beautiful combination... I got the insane puzzle for once with various lines as most are forced or losing much more material. For that reason and for some moves screaming to be played, this probably is not the usual insane one you get every Sunday. But as a tribute week, that's OK and I thank for honoring the great warrior of 8x8.
Jun-12-16  YouRang: Saw the first couple couple moves, up through 33.Bf6. Admittedly, it helps that it's along the same theme of the other Korchnoi puzzles this week (a blistering attack launched by a piece sac).

click for larger view

Even this is far enough to be feel good about white's attack.

Overall, white is down in material, but all his pieces are working harmoniously to blast the black K, while black's extra pieces are useless stumps on the wrong side of the board.


I checked the above position the computer, and it does better than "feel good" -- it's calling it mate in 18!.

Jun-12-16  WorstPlayerEver: What can I say? Another typical kingside attack of Korchnoi.
Jun-12-16  patzer2: Don't often remember games and combinations I viewed 10 or more years ago, but today's Sunday Korchnoi memorial puzzle position (31. ?) was one I immediately recognized.

Both Korchnoi's brilliant 31. Bxg6! and 31. Bf6! (my pick) win decisively.

P.S.: Leonard Barden wrote in a Viktor Korchnoi obituary at <Kasparov’s series of books about former champions, My Great Predecessors, gives Korchnoi greater prominence than any other player who did not win the title, and that is likely to prove the firm verdict of history. His fighting qualities, defensive resilience, endgame subtlety, and psychological skills stood out even among elite grandmasters.>

Although not mentioned in the obituary, Barden no doubt remembers this position (Black to move in diagram below)

click for larger view

from L Barden vs Korchnoi, 1960 where Korchnoi won with a pretty discovered attack combination beginning with 25...Qxb5! .

According to Viktor Korchnoi played Bobby Fischer 10 games and had an even record against him in classical games (2 to 2 with 4 draws), and in blitz (1 to 1).

The only other players I can recall with a better record against Fischer were Tal and Geller. Yet Korchnoi had a decisive advantage over Tal and Geller in the many games he played against them.

Jun-12-16  AlicesKnight: An excellent Korchnoi week, CG, befitting a very fine player.
Premium Chessgames Member
  agb2002: White has the bishop pair for a bishop and a knight.

The first idea that comes to mind is 31.Bxg6 hxg6 (31... Rg7 32.Bxh7+ wins two pawns) 32.Bf6:

A) 32... Rh7 33.Qxg6+ Rg7 (33... Kf(h)8 34.Qg8#) 34.Bxg7 + - [R+2P vs N] and a mating attack.

B) 32... Rg7 33.Rxg6

B.1) 33... Rxg6 34.Qxg6+ Kf8 35.Qh6+ Ke8 (35... Kf7 36.Qg7+ Ke8 37.Qg8#) 36.Qh8+ Kf7 37.Qg7+ Ke8 38.Qg8#.

B.2) 33... Ne8 34.Rh6 Rh7 (34... Nxf6 35.Rh8#) 35.Rxh7 Nxf6 (35... Qxh7 36.Qxe8#) 36.Rh8+ Kg7 37.Qh6+ Kf7 38.Rf8+ Ke7 39.Qg7#.

C) 32... Rxf6 33.exf6

C.1) 33... Ne8 34.Rxg6+

C.1.a) 34... Kf8 35.Qh8+ Kf7 36.Rg7+ Kxf6 (36... Nxg7 37.Qxg7+ Ke8 38.Qg8#) 37.Rxd7+, etc.

C.1.b) 34... Kf7 35.Rg7+ and mate next.

C.1.c) 34... Ng7 35.Rxg7+, etc.

C.2) 33... Qf7 34.Rxg6+ and mate in three.

C.3) 33... Qh7 34.Rxg6+ Kh8 35.Rh6 and mate in two.

Jun-12-16  Cheapo by the Dozen: I miscalculated early, thinking 33 Rxg7+ would work -- which it indeed would if White's sacrificed LSB were still on the board. :)
Jun-12-16  stacase: Insane? 31.Bg6 was obvious and perhaps the rest wasn't always a gimme but I'd say on the whole it was pretty straight foreward.
Jun-12-16  mel gibson: Insane?
I saw it in a few seconds.
Jun-12-16  Razgriz: This was an easy Sunday Puzzle.
Jun-12-16  schachfuchs: Got this until 32.Rxg6+ Rg7 33.Bf6 Ne8 (also with 33...Rxg6 leading to Qg8# like in the line B.1) of agb2002) 34.Rh6 but didn't see the final decision after 34...Rh7. So, half score?! Thanks CG for this inspiring week in memoriam of "Viktor dem Schrecklichen"!
Jun-12-16  schachfuchs: I (we) will miss him!!
Jun-12-16  The Kings Domain: Glad to have gotten this puzzle. Good positional maneuvering by Korchnoi.
Jun-12-16  WorstPlayerEver: Weird, no one -except little me- noticed that the cuteness of the combination lies in the moves itself. I don't think one finds easily a combination where the first 4 moves all are made to occupy the 6th rank. Let aside the 3 moves which subsequently occupy the 8th rank for White. And if one sees such lines 'immediately', why are they not a GM immediately?

31. Bg6 32. Rg6 33. Bf6 34. Rh6
35. Rh8 36. Rg8 37. Qh8

Jun-12-16  devere: A nice Wednesday problem for Sunday.
Jun-12-16  WorstPlayerEver: @devere

Guess it's more a tribute to Korchnoi this week. So your observation failed, I'm afraid.

Besides, a chess player has to keep these little things in mind. As in real life things could even end up more abruptly than at a chessboard :)

Jun-12-16  PeterJ: Quiet move 32 Bf6 also wins simply 32 - rg7 33 Rg6 will transpose if 33 - Ne8 but other moves e.g. 33 - Rg6 allow mate in a few moves
Jun-12-16  dfcx: <devere: A nice Wednesday problem for Sunday.> Agree, just need to see the move 34.Rh6 after 33...Ne8.
Jun-12-16  znsprdx: surely <CG> could have found something to pay a true tribute to Viktor the week of his death. A "C" player could have won this

thanx < patzer2:> for your Leonard Barden post

Jun-12-16  Bravehorse: 31.Bf6 proves to be just as effective; 31... Rg7 32. Bxg6 hxg6 33. Rxg6 transposes back into the game
Jun-12-16  BxChess: I also went with 31. Bf6, which as others have noted transposes to the game line. I like a quiet move such as this for a puzzle solution. Often when I can't solve a puzzle immediately I simply look for a sacrifice, since this is almost always the first move for these puzzles, but it feels a bit like cheating. Puzzles with a quiet move as a solution keeps me honest.
Jun-13-16  stst: The game leaves the perpetual un-answered:
33.Bf6 RxR
34.QxR+ Kf8
35.Qh6+ Ke8
36.Qh8+ Kf7
37.Qg7+ Ke8..... etc

If 33.Bf6 RxR
34.Qh8+ Kf7
35.Qh7+ Kf8 etc similar repetition

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