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Tigran Vartanovich Petrosian vs Hans Ree
Wijk aan Zee (Netherlands) (1971)  ·  English Opening: King's English. Four Knights Variation Fianchetto Lines (A29)  ·  1-0
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find similar games 3 more Petrosian/H Ree games
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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 4 OF 4 ·  Later Kibitzing>
Sep-10-09  Athamas: As to why Bg2 instead of Bxe2? Personally I just thought it was a stronger move. Developed a piece, created an even stronger threat and avoided getting pinned. Also, I felt the king was safer with black's pawn there instead of white's bishop. I think Bxe2 is acceptable, just allows for more counterplay.
Premium Chessgames Member
  Jimfromprovidence: <Patriot> <Athamas> Thanks for your input. Now, I would be inclined to play 8 Qa4 after 7...dxc6, because it pretty much forces 8...Qe7 to protect both bishop and pawn.

click for larger view

Now, white has a little more flexibilty with his knight; he can go to d4, (with an escape square at c2), or the knight can go to g5 as well.

Premium Chessgames Member
  fm avari viraf: The puzzle suggests that Black has fallen to an opening trap where White can win with 7.dxc6 exf3 8.Qb3! which attacks the B on b4 [& after the retreat of B] as well as cxb7 winning a piece. Before Hans could warm his chair, he must have left it in despair.
Premium Chessgames Member
  Once: <JLS> At the risk of being even more off topic than usual, here are three different RvBB forks/ double attacks.

click for larger view

1. Re2 skewers g2 and h2 - a skewer along the same rank or file.

2. Re4 forks a4 and h4 - a fork of two bishops on the same rank or file.

3. Rxe6 forks e8 and b6 - a fork of intersecting rank and file (but you need a capture at the intersection, otherwise it is not strictly a double attack as one of the bishops would already be under attack).

The queen can do all of that, but also has a fourth attack at the intersection of a rank and diagonal. To achieve this without losing the queen to the bishop on the diagonal, we need to introduce a pin:

click for larger view

Qf5 forks both bishops.

Okay, okay, getting too silly now. I'm off to bed.

Sep-10-09  Marmot PFL: Nice trap, but if avoided 5 Nd5 tends to be drawish. 5...Bc5 or 6...Nd4 are both OK.
Sep-10-09  BOSTER: I guess the winning move in this position 7.Qb3,attacking too bold bishop on b4,who cross the border, with idea to put both black bishops on b file, or to move bishop f1 on long diagonal forking two pieces on b7. After 7...exf3 8.dxc6 fxe2
9.Bg2 Qe7 10.cxb7 Bxb7
11.Bxb7 Rb8 12.Qf3 and white with a piece ahead after couple moves.
Sep-10-09  wals: [Event "Wijk aan Zee (Netherlands)"]
[Site "Wijk aan Zee (Netherlands)"]
[Date "1971.??.??"]
[Round "12"]
[White "Petrosian"]
[Black "Hans Ree"]
[Result "1-0"]
[ECO "A29"]
[Annotator "Rybka 3 1-cpu (30m)"]
[PlyCount "15"]

A29: English Opening: Four ♔nights Variation with 4 g3

1. c4 e5 2. Nc3 (2. e3
Nf6 ) 2... Nf6 (2... Nc6 3. e3) 3. Nf3 (3. a3 a6) 3... Nc6 4. g3 Bb4 (4... d5 5. cxd5 Nxd5 6. Bg2 ) 5. Nd5 (5. Bg2 O-O ) 5... Nxd5 (5... e4 6. Nh4 ) 6. cxd5 e4?? <blunder> ♗lack is ruining his position (6... Nd4 {and Black has air to breath and saves 1.53 points) 7. dxc6 exf3 (7... dxc6 saves 0.35 points 8. Qb3 Qe7 9. Nd4 ) 8. Qb3 +2.00 fxe2 9.Bxe2 a5 (..+2.18 a5 9.a3 fxe2

The above may be of interest to those seeking help.

Premium Chessgames Member
  OBIT: Seems like 7. dxc6 exf3 8. Qb3 wins a piece, with 9. cxb7 coming if the Black bishop moves. That's seems a bit easy for a Thursday, so lemme see if I just fell for some sucker shot.
Premium Chessgames Member
  OBIT: Hmm, nope....
Premium Chessgames Member
  patzer2: <Jimfromprovidence> In your posted and diagramed position under discussion, I suspect White can win with the simple 8. Ng1. White is up a piece and ready to play 9. a3 and 10. Qa4 to drive the Bishop off the a5 - e1 diagonal, prior to developing pieces and building up a decisive attack.

However, I agree your 8. Qa4 is probably stronger since it seems to give White quicker and better development to augment a clearly decisive material advantage.

Sep-10-09  WhiteRook48: I was thinking 8 Qa4
Sep-10-09  CHESSTTCAMPS: This appears to be an English Opening where black has committed a blunder that is surprising to see at the master level this early in the game. Perhaps Ree wanted a rest day and didn't like his chances against Petrosian anyway. The exchange of knights at d5 followed by the e4 pawn push is flawed because the exposed position of the Bb4 allows white to gain a vital tempo. This is almost the equivalent of allowing a queen check fork at a4, but more complicated. White wins a piece with:

7.dxc6 exf3 8.Qb3

Of course, not 8.cxb7? Bxb7 9.Qb3? fxe2 and white loses material. Now white gets in the double attack first and each of the following lines ends with black getting no more than one pawn compensation for a bishop deficit:

A) 8... Bc5(|a5|d6|f8) 9.cxb7 Bxb7 10.Qxb7 fxe2 11.Bg2 Rg8 12.Qe4+ Kf8 13.Qxe2

A.1) 9...Rb8 10.bxc8/Q Qxc8 11.Qxf3

B) 8... Be7 9.cxb7 Bxb7 10.Qxb7 fxe2 11.Bxe2

C) 8... Qe7 9.a3 dxc6 10.Qxb4 Qxb4 11.axb4 fxe2 12.Bxe2

C.1) 9... Bxd2+ 10.Bxd2 fxe2 11.cxb7! exf1/Q+ 12.Kxf1 Bxb7 13.Qxb7 O-O 14.Bc3

C.1.1) 10... dxc6 11.Qxf3

C.2) 9... Bc5(|a5|d6) 10.cxb7 Bxb7 11.Qxb7 O-O 12.Qxf3

D) 8... O-O 9.Qxb4 dxc6 10.d4 fxe2 11.Bxe2 Re8 12.Be3

E) 8... a5 9.a3 dxc6 10.axb4 fxe2 11.Bxe2 Bh3 (Be6 12.Bc4 a4 13.Qe3) 12.Qe3+ Kf8 13.bxa5

It's likely that black had some idea of utilizing the semi-open e-file, but there's just not enough for a piece. Time to see what happened...

Premium Chessgames Member
  TheBish: Petrosian vs H Ree, 1971

White to play (7.?) "Medium"

Material is even, and both sides have a knight under attack. The biggest advantage White has going is the move! Under such conditions, the side with the move often can win a pawn, or as here, a piece.

7. dxc6 exf3

Now White can win a pawn with 8. cxd7+ Bxd7 9. exf3, but the pawn would be doubled (and other weaknesses are created, namely the isolated d-pawn and holes on d3 and d4), not exactly a winning advantage. Note that White could try 8. cxb7 Bxb7 9. Qb3?? (9. exf3 is better, but Black will have good play for the doubled extra pawn) fxe2 10. Qxb4 (10. Qe3+? loses badly to 10...Qe7) Bxh1 11. Bxe2 Bc6! (anticipating f2-f3) and Black is up an exchange. But White improves.

8. Qb3! Move order is everything! Now:

A) 8...Qe7 9. a3 Bc5 10. cxb7 wins a piece (but not 10. cxd7+? Bxd7 11. Qxf3?? Bc6).

B) 8...Bc5 9. cxb7 is the same, i.e. 9...Rb8 10. bxc8=Q Qxc8 (or 10...Rxb3? 11. Qxd8+ Kxd8 12. axb3) 11. Qxf3, with an extra piece and pawn.

C) 8...fxe2 9. Bxe2 doesn't change much.

Time to see the game.

Sep-10-09  Vollmer: 3 pages of comments and not one (as far as I can see) mentions where Black went horribly wrong . 8^p 4...d6 perhaps .
Sep-11-09  Athamas: Wals regularly posts an analysis of the game... according to his post, the blunder was pushing to e4.
Sep-11-09  brucealexander: I don't get it. Why is Black resigning? Couldn't he play a5 to protect his bishop?
Premium Chessgames Member
  Jim Bartle: I think 9.a3 loses a piece in any case.
Sep-11-09  LIFE Master AJ: I recognized this one as soon as I saw it ... I guess I will have to add it to my page of miniatures.
Premium Chessgames Member
  Peligroso Patzer: <Vollmer: 3 pages of comments and not one (as far as I can see) mentions where Black went horribly wrong . 8^p 4...d6 perhaps .>

If I correctly construe the above comment as suggesting 4. ... d6 in lieu of 4. ... Bb4, it should be noted that 4. ... Bb4 is well-known theory and perfectly sound. Here is the game that is probably Black's most famous win in this line: Kasparov vs Karpov, 1987.

Black was fine until 6. ... e4?.

Sep-11-09  AnalyzeThis: I don't play this, but it sure looks like a trappy opening. Let's say that after 6. cxd5, black plays ...Nd4 instead of 6...e4:

click for larger view

White just plays 7. Nxe5 and wins a pawn, right?

Well, not exactly: the reply 7.....
Qe7!! comes, and white has serious problems! (For example 8. Nd3? Nf3 mate!)

Premium Chessgames Member
  kevin86: Black feels like he's robber-as he was.
Sep-11-09  LIFE Master AJ: <Peligroso Patzer> Good reference game!!! (Thanks for making that observation, you saved me the trouble.)

This game is briefly annotated on my page. (

Feb-16-13  IndigoViolet: <Dire Ree>
Oct-01-13  crchandler: I sometimes ponder whether LifeMaster AJ's narcissism is natural or the product of intense effort.
Premium Chessgames Member
  zanzibar: My word - this trap occurs more often than I would have thought:

Cvetkovic, S 2470* -- Brestian, Egon 2225
1-0 (22) A29 1985

Silva Nazzari, H -- Cristobal, Ruben 2342*
1-0 (18) A29 1973

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