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Sicilian, Kan, 5.Nc3 (B43)
1 e4 c5 2 Nf3 e6 3 d4 cxd4 4 Nxd4 a6 5 Nc3

Number of games in database: 7975
Years covered: 1862 to 2023
Overall record:
   White wins 33.9%
   Black wins 37.0%
   Draws 29.1%

Popularity graph, by decade

Explore this opening  |  Search for sacrifices in this opening.
With the White Pieces With the Black Pieces
Gadir Guseinov  37 games
Sergei Movsesian  29 games
Sergey Kudrin  26 games
Pia Cramling  61 games
Normunds Miezis  55 games
Lajos Portisch  49 games
NOTABLE GAMES [what is this?]
White Wins Black Wins
Anand vs I Sokolov, 1992
Carlsen vs Kamsky, 2005
Unzicker vs Tal, 1975
Spassky vs Tal, 1965
G Botterill vs Tal, 1973
J Kristinsson vs Tal, 1964
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 page 1 of 319; games 1-25 of 7,975 
Game  ResultMoves YearEvent/LocaleOpening
1. Paulsen vs J Heathcote  1-0241862Blindfold simul, 10bB43 Sicilian, Kan, 5.Nc3
2. G Vogt vs H Clemenz  0-1221863Dorpat Chess ClubB43 Sicilian, Kan, 5.Nc3
3. Anderssen vs De Vere ½-½571870Baden-BadenB43 Sicilian, Kan, 5.Nc3
4. Anderssen vs K Pitschel  1-0421876MSB-02.Kongress plofB43 Sicilian, Kan, 5.Nc3
5. A Schottlaender vs W Paulsen 1-03918791st DSB Congress, LeipzigB43 Sicilian, Kan, 5.Nc3
6. Winawer vs W Paulsen 0-1371880Wiesbaden CongressB43 Sicilian, Kan, 5.Nc3
7. J Minckwitz vs W Paulsen  1-0421880Wiesbaden CongressB43 Sicilian, Kan, 5.Nc3
8. Zukertort vs W Paulsen 0-12418812nd DSB Congress, BerlinB43 Sicilian, Kan, 5.Nc3
9. Wittek vs Paulsen 0-15218812nd DSB Congress, BerlinB43 Sicilian, Kan, 5.Nc3
10. Wemmers vs W Paulsen ½-½5118812nd DSB Congress, BerlinB43 Sicilian, Kan, 5.Nc3
11. Winawer vs Paulsen 1-03218812nd DSB Congress, BerlinB43 Sicilian, Kan, 5.Nc3
12. J Schwarz vs W Paulsen  ½-½3618812nd DSB Congress, BerlinB43 Sicilian, Kan, 5.Nc3
13. C Leffmann vs W Paulsen 0-14918833rd DSB Congress, NurembergB43 Sicilian, Kan, 5.Nc3
14. M Bier vs A Schottlaender  1-05018833rd DSB Congress, NurembergB43 Sicilian, Kan, 5.Nc3
15. M Bier vs W Paulsen 1-06718833rd DSB Congress, NurembergB43 Sicilian, Kan, 5.Nc3
16. Blackburne vs W Paulsen 1-03018833rd DSB Congress, NurembergB43 Sicilian, Kan, 5.Nc3
17. J Schwarz vs W Paulsen ½-½4618833rd DSB Congress, NurembergB43 Sicilian, Kan, 5.Nc3
18. J N Berger vs W Paulsen ½-½4918854th DSB Congress, HamburgB43 Sicilian, Kan, 5.Nc3
19. J Noa vs W Paulsen 1-01918854th DSB Congress, HamburgB43 Sicilian, Kan, 5.Nc3
20. Von Gottschall vs W Paulsen  0-13918854th DSB Congress, HamburgB43 Sicilian, Kan, 5.Nc3
21. A Schottlaender vs W Paulsen ½-½5318854th DSB Congress, HamburgB43 Sicilian, Kan, 5.Nc3
22. Gunsberg vs W Paulsen 1-05018854th DSB Congress, HamburgB43 Sicilian, Kan, 5.Nc3
23. M Weiss vs Paulsen 1-04418875th DSB Congress, FrankfurtB43 Sicilian, Kan, 5.Nc3
24. Metger vs Paulsen 0-13818896th DSB Congress, BreslauB43 Sicilian, Kan, 5.Nc3
25. G Marco vs J Holzwarth 0-1171890Kolisch MemorialB43 Sicilian, Kan, 5.Nc3
 page 1 of 319; games 1-25 of 7,975 
  REFINE SEARCH:   White wins (1-0) | Black wins (0-1) | Draws (1/2-1/2)  

Kibitzer's Corner
< Earlier Kibitzing  · PAGE 2 OF 2 ·  Later Kibitzing>
Aug-03-05  euripides: <jc> Black often has plenty of pieces round the king. Queen's side castling by Black in response to White's Q-side castling is found in some lines of the Najdorf (6 Bg5 Nbd7) and Scheveningen (Keres attack) as well and is sometimes safer than K-side castling (for a world-class example of incorrect K-side castling see Spassky vs Petrosian, 1969 ). It's also sometimes possible to delay castling past move twenty and bamboozle the opponent, who doesn't know where to attack. The trick is to keep adequate flexibility -look at lots of games to get a variety of ideas and then see how the position develops.
Aug-04-05  SEMENELIN: I agree with <euripides>. Playing sicilian as white or black is very tricky but the kan opening an aggressive line for black. I have reviewed this game by Spassky vs Petrosian, 1969. Yup black has a bad castling and has a risky position. In this case black is forced to be defensive he has no counter play
Aug-06-05  jcmoral: One of my first games with the Kan. I feel like I missed the point of the opening. For example exchanging the dark-squared bishops was not what I had in mind. Also was I correct in agreeing to the draw? After the exchange of knights I felt I had slightly better pawn structure but had no real plan to get the king into the game.

[Site ""]
[Date "2005.8.2"]
[Round "1"]
[White "NN"]
[Black "jcm"]
[Result "1/2-1/2"]
[ECO "B43"]
[WhiteELO "1844"]
[BlackELO "1818"]

1. e4 c5 2. Nf3 e6 3. Nc3 a6 4. d4 cxd4 5. Nxd4 Qc7 6. Bd3 Bc5 7. Nf3 Nc6 8. O-O Nf6 9. h3 b6 10. Bg5 Be7 11. Re1 Bb7 12. e5 Ng8 13. Bxe7 Ngxe7 14. b3 O-O-O 15. a4 Nb4 16. Na2 Nxd3 17. cxd3 Kb8 18. d4 Rc8 19. Rc1 Qd8 20. Rxc8+ Qxc8 21. Qc1 Qxc1 22. Rxc1 Bxf3 23. gxf3 Rc8 24. Rxc8+ Kxc8 25. Nc3 Nd5 26. Nxd5 1/2-1/2

Aug-06-05  OneArmedScissor: Adding to what refutor said:
The Kan is very flexible for black. It's a sort of "I'll wait for you to mess up, and then I'll pounce on your mistake(s)!" type of opening.
Aug-07-05  SEMENELIN: <jcmoral> i have analyzed ur game you should have probably have won in the end game. I think you should practice ur endgame. You exchange ur pieces earlier in the endgame. Exploit ur game first before declaring a draw.
Aug-07-05  euripides: <jc> mostly this looks nicely played. I might be tempted to play b5 rather than b6. The exchange of black-squared bishops often favours Black in the Kan, but you could also consider allowing Bxf6 gxf6 especially if you're going to castle Q-side. Possibly you should have played d6 (this may be easier with b5 rather than b6 as the bishop then has a retreat). At the end, if I'm seeing the position right, you should probably get your king to c6 before playing Nd5. Black would then be better though I imagine White should be able to hold.
Sep-13-05  TheMouse: Can any one find a couple
1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Nc3 b5 6. Be3

games? I don't have a "special Membership" and I'm intrested in why this line is bad for black.

Sep-13-05  aw1988: Lack of development, probably.
Sep-13-05  TheMouse: Sry that's a typo, I mean bad for white
Sep-14-05  euripides: too much development, perhaps.
Sep-24-05  MonsieurL: I can't find this opening in Nunn's NCO.. can anyone help me find it? Thanks!!!
Sep-24-05  MonsieurL: Never mind; I found it. It is between B41 and B42, midway through the B41 Kan page for some reason!! Hopefully this will help someone else.
Mar-22-06  akashic: After 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Nc3 Qc7 6. Be3 Nf6 7. Bd3 (If 7. Be2 then 7... Bb4 and white loses a pawn although it is a bit risky taking it. If 7. f3 then 7... Bb4 8. Qd2 d5! and Black is winning.) Bb4 8. Qd2 d5! and White is in a cramped position with little counterplay.

Be3 is not as bad in the 5. b5 line, although it will require very accurate play to mantain an advantage.

Premium Chessgames Member
  WTHarvey: Here is a little collection of winning combination in B43 miniatures:
Premium Chessgames Member
  plang: I am currently looking at the game J.Polgar - Short from Dortmund 1997.

It starts 1 e4..c5 2 Nf3..e6
3 4 Nd4..Qb6 5 Nb3..a6

It is categorized as B43 in Informant #70 but is not included in any of my Paulson / Kan books. 4..Qb6 seems to be an oddball variation that is difficult to categorize.

May-01-07  lonepsycho: <4...Qb6 seems to be an oddball variation that is difficult to categorize.>

It is called the Grivas Sicilian, I believe, after Greek GM Efstratios Grivas-- who has supposedly perfected the variation over the last 20 years.

Premium Chessgames Member
  plang: Thanks, according to the cover of the Grivas book black has played ..Nc6 rather than ..e6.

This may transpose, of course, but there are some differences.

After 1 e4..c5 2 Nf3..e6
3 4 Nd4..Qb6 5 Nc3 black can play 5..Bc5 which is quite awkward for white. I am assuming that this line is not in the Grivas book.

May-17-07  naamloos: "The Sicilian with ...Qb6" by Zoran Ilic calls the variation with 2. ..e6 and 4. ..Qb6 the Kveinys variation after the Lithuanian GM Aloyzas Kveinys.

This book has information on both the Kveinys variation and the Grivas variation.

I was planning on using the Kveinys variation in my next tournament (which starts tomorrow), but I'm still having doubts about it.

I'm also considering using the Pin variation (1.e4 c5 2.Nf3 e6 3.d4 cd4 4.Nd4 Nf6 5.Nc3 Nb4), the Basman-Sale variation (4.Nd4 Bc5 which has some lines in common with the Kveinys) or the plain old Scheveingen (This is what I have always played so far with 2. ..d6, but now I wanted something different for change).

I still don't know for sure which I will use. I also don't know what to do against the annoying 1.e4 c5 2.Nf3 e6 3.Nc3.

May-17-07  naamloos: <After 1 e4..c5 2 Nf3..e6
3 4 Nd4..Qb6 5 Nc3 black can play 5..Bc5 which is quite awkward for white. I am assuming that this line is not in the Grivas book.>

White can play 6.Na4 after which play continues like 6. ..Qa5+ 7.c3 Bxd4 8.Qxd4, after which white seems to keep an edge at the very least.

Jan-22-08  midknightblue: <akashic> thx for the very good analysis on the 6. Be3 lines. Is this home analysis, from a book, or from an engine. Looks like you are right on the money. I just want to know where I can get more analysis like this, since John Emms book on the sicilian kan doesnt cover a lot of the less common lines. Thx.
Aug-13-10  Don Cossacks: Wow Black has higher winning percentage than White.My latest favorite against White's 1.e4...
Oct-02-10  LDJ: After <1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 e6 5.Nc3 a6 6.Be3 Qc7 7.Be2 Nf6 8.O-O Bb4 9.Na4>, doesn't White lose the pawn on e4?
Oct-17-10  aktajha: <LDJ> Wow, that's a complicated variation right there you're trying to learn. There is a simple answer and a hard answer to that question.

The simple answer is 'yes' he loses a pawn.

Now for the hard answer: after 9. Na4 Nxe4 10. Nxc6

click for larger view

with the pawn captures black has (bxc6 or dxc6), white plays 11. Qd4 and forks the B and the g7 pawn. Best for black is 10. ... Qxc6, then there follows 11. Nb6 Rb8 and only then 12. Qd4 with a lot of compensation (Bf3 is coming, Bf4, 0-0 is stopped for a while if blak plays 12. ... Bf8 etc.).

Oct-11-11  rapidcitychess: I've always laughed a little bit inside when I see this opening. It's like a "I'm not mainstream" opening.

In general, I've found the black bishop more helpful on e7 than on a7. Yeah, sure it prevents white from trying to plays f4 and castle kingside... but who cares when you can castle queenside and storm black's defenses?

Could any regular Kan players show me the flaw in my thinking?

Jun-05-13  parisattack: <Rapidcitychess> I am sure you are correct - the KB is more properly placed at e7. But it is more active outside the pawn structure which give Black more options/flexibility.

I think that in fact keeps White from storming the K-side as often as he does say in the Scheveningen or fact in the Kan, Black often gets play himself on the K-side.

I've played it often (after leaving the Pelikan/Sveshnikov after 30 years) and find 5. Bd3 the most difficult to meet although Black still has lots of candidate moves early on in the game.

The danger in the Kan is Black can get a sterile position - especially in Taimanov-like variations with ...Nc6 and White taking d4/c6.

Openings clearly aren't a big thing here on <> but a good forum at <> is available for opening fans.

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