If You Like : Share It with Friends

Monday, April 30, 2012

Pin It
 Prasad - Koshy,Varugeese [B33]
Madras, 1995
1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e5 6.Ndb5 d6 7.Bg5 a6 8.Na3 Be6



[This is the main alternative to Sveshnikov's 8...b5 and probably the really playable alternative. Other moves seem rather dubious, for example: 8...Be7 9.Nc4 Nd4 (9...Be6 10.Bxf6 gxf6 11.Ne3 Qd7 12.Ncd5 Bd8 13.Qh5 gave White a typical light-squared bind in the game Blue-Plater, Hilversum 1947; while 9...0–0 10.Bxf6 Bxf6 11.Qxd6 Be6 12.0–0–0 Bg5+ 13.Kb1 Qf6 14.Qc5 left Black with inadequate compensation for his pawn in Estrin-Goldenov, USSR 1956) 10.Bxf6 Bxf6 11.Nd5 b5 12.Ndb6 Rb8 13.Nxc8 Rxc8 14.c3 Ne6 15.a4!± gave White a clear advantage in Averbakh-Korchnoi, USSR Ch. 1950.; 8...d5 is well met by 9.Nxd5 Bxa3 10.bxa3 Qa5+ 11.Qd2 (11.Bd2 is also possible) 11...Qxd2+ 12.Kxd2 Nxd5 13.exd5 Nd4 14.Bd3 with an extra pawn and the two bishops.] 9.Nc4 Rc8 10.Bxf6 gxf6



 [Black can avoid weakening his pawn structure with 10...Qxf6 but this loses time. White can keep an edge with 11.Nb6! (and not 11.Nxd6+ Bxd6 12.Qxd6 Rd8 13.Qc5 Nd4 14.Bd3 Qg5„ with excellent counterplay) 11...Rb8 12.Ncd5 Qd8 13.c3 Tolnai-Honos, Hungarian Team Ch. 1995 continued 13...Be7 14.g3 0–0 15.Bg2 Qe8 16.0–0 Kh8 17.a4 Bd8 18.b4 Ne7 19.a5 Qc6 20.Rc1± with a clear edge.] 11.Ne3 Bh6 [By exchanging off the knight on e3, Black rids himself of his bad bishop and weakens White's control of the d5- and f5-squares. Even so, it does not seem quite enough equalise. An alternative is 11...Ne7 , after which Anand-Morovic, Las Palmas 1993 continued 12.Bd3 Bh6 13.0–0 Bxe3 14.fxe3 Qb6 15.Qc1 Ng8! 16.Kh1 Now Mrovic suggested 16...h5!? (in the game he stood worse 16...Qc5 17.Qd2 h5 18.Rad1 h4 19.h3 Kf8 20.Qe2) after which 17.Nd5 is well met by (In my view should keep the tension with 17.Rb1!? ; or 17.a3 , when the defects in Black's position remain.) 17...Bxd5 18.exd5 Ne7 19.e4 f5! with for both sides.] 12.Bd3 Bxe3 [Black can transpose into the note to Black's 11th with 12...Ne7 ] 13.fxe3 Qb6 14.Qc1 Na5?! [A natural move, going for counterplay on the c-file, but White's play on the f-file may prove more effective. Black can still transpose into the note to his 11th with 14...¤e7. Another way to defend the f6-pawn is with 14...h5 15.0–0 Rh6 , but this still seems better for White after 16.Kh1 Ne7 17.a3 h4 Oll-Sermek, Moscow Olympiad 1994 and now 18.h3! leaves Black struggling.] 15.0–0 Ke7 16.Qe1 h5




 [16...Nc4 17.Nd1 would transpose back into the game but this may represent a more accurate move order from Black's point of view as it avoids the pofential perils of 16...h5 17.b3.] 17.Nd1 [17.b3 was played in a game Ki.Georgiev-Shirov, Biel 1992 when Karpov suggested that Black had to play 17...Rxc3! (the game resulted in a quick defeat for Black after 17...Qc5 18.Nd5+ Bxd5 19.exd5 Qxd5 20.Rd1 Rcg8 21.Qf2 Rh6 22.Bg6!! 1–0) 18.Qxc3 Qxe3+ 19.Kh1 Nc6 20.Rae1 Qc5 21.Qd2 (21.Qxc5 dxc5 leaves Black with good compensation for the exchange because the bad bishop on d3) 21...Nb8! 22.Rf3 Nd7 , when it is very difficult for to make progress.] 17...Nc4?! [Going for active counterplay but the knight ends up the poor a3-square. Maybe 17...Qc7 is worth a thought, intending to bring the knight back via c6 to b8 and then out again to d7. That f6-pawn needs protecting.] 18.b3 Na3 19.c4 Qc5 20.Nc3 b5 21.Nd5+ Bxd5 22.cxd5 Qc3 [After 22...Nc2 there follows 23.Bxc2 Qxc2 24.Qh4 Rh6 25.Rxf6 etc.] 23.Qh4 Rh6 24.Rxf6 Rxf6 25.Rf1 Rf8 26.Qxf6+ Kd7 27.Rd1 Qb2 28.h4!



A very deep move, setting up an evelual endgame win based on the poor position of Black's knight. 28...a5 29.Qf1 Ke7 30.Rc1 Qd2 31.Rc7+ Kd8 32.Qc1! Qxc1+ 33.Rxc1 Kd7 34.Rc6 Rc8 35.Rxc8 Kxc8 36.g4 Kd7 37.gxh5 Ke7 38.Kg2 .An elegant game by Prasad. 1–0
 

Saturday, April 28, 2012

Chess Strategy

Pin It




In this combination Black has a rook for a knight and should therefore win, unless White is able to obtai some compensatio immediately. White in fact mates in a few movees, thus,


1. Nf6+   gxf6   ( Forced otherwise Qxh7 mate)


2. Qg3+   Kh8   Bxf6# Mate  1-0




A very frequent type of combination is shown in the following position.Here White is the exchange and a pawn behind, but he can win quickly thus: 1.Bxh7+ Kxh7 [if 1...Kh8 2.Qh5 g6 3.Qh6 and wins] 2.Qh5+ Kg8 3.Ng5 , and Black cannot stop mate at h7 except by sacrificing the queen by 3...Qe4 , which would leave White with a queen for a rook. +-
 



This same type of combination is seen in a more complicated form in the following position.White proceeds as follows: 1.Nxe7+ (this clears the line for the bishop) 1...Bxe7 (to stop the knight from moving to g5 after the sacrifice of the bishop) 2.Rxe7 Nxe7 (best) 3.Bxh7+ Kxh7 [if 3...Kh8 4.Qh5 g6 5.Bxg6+ Kg7 6.Qh7+ Kf6 7.g5+ Ke6 8.Bxf7+ Rxf7 9.Qe4# mate] 4.Qh5+ Kg8 5.Ng5 Rc8 6.Qh7+ Kf8 7.Qh8+ Ng8 8.Nh7+ Ke7 9.Re1+ Kd8 10.Qxg8# mate.This combination is rather long and has many variations, therefore a beginner will hardly be able to fathom it; but knowing the type of combination he might under similar circumstances undertake and carry out a brilliant attack which he would otherwise never think of. It will be seen that all the combinations shown have for a foundation the proper coordination of the pieces, which have all been brought to bear against a weak point. 1–0





In this position White's best line of defence consists in keeping his pawn where it stands at h2. As soon as the pawn is advanced it becomes easier for Black to win. On the other hand, Black's plan to win (supposing that White does not advance his pawn) may be divided into three parts. The first part will be to get his king to h3, at the same time keeping intact the position of his pawns. (This is all important, since in order to win the game it is essential at the end that Black may be able to advance his rearmost pawn one or two squares according to the position of the white king.) 1.Kg3 Ke3 2.Kg2 [If 2.Kg4 Kf2 3.h4 g6 will win.] 2...Kf4 3.Kf2 Kg4 4.Kg2 Kh4 5.Kg1 Kh3 The first part has been completed.The second part will be short and will consist in advancing the h-pawn up to the king. 6.Kh1 h5 7.Kg1 h4 This ends the second part.The third part will consist in timing the advance of the g-pawn so as to play ... g3 when the white king is at h1. It now becomes evident how necessary it is to be able to move the g-pawn either one or two squares according to the position of the white king, as indicated previously. In this case, as it is White's move, the pawn will be advanced two squares since the white king will be in the corner, but if it were now Black's move the g-pawn should only be advanced one square since the white king is at g1. 8.Kh1 g5 9.Kg1 g4 10.Kh1 g3 11.hxg3 [If 11.Kg1 g2 .] 11...hxg3 12.Kg1 g2 13.Kf2 Kh2 and wins.It is in this analytical way that the student should try to learn. He will thus train his mind to follow a logical sequence in reasoning out any position. This example is excellent training, since it is easy to divide it into three stages and to explain the main point of each part. –+
 


                                                         Which pawn is first to queen?
In this position whoever moves first wins.The first thing is to find out, by counting, whether the opposing king can be in time to stop the passed pawn from queening. When, as in this case, it cannot be done, the point is to count which pawn comes in first. In this case the time is the same, but the pawn that reaches the eighth square first and becomes a queen is in a position to capture the adversary's queen when he makes one. Thus: 1.a4 h5 2.a5 h4 3.b6 axb6 Now comes a little calculation.Therefore instead of taking he plays: 4.a6 [White can capture the pawn 4.axb6 , but if he does so he will not when queening command the square where Black will also queen his pawn: 4...h3 5.b7 h2 6.b8Q h1Q] 4...h3 5.a7 h2 6.a8Q and wins. +-
 



                                                                               The opposition
 
Suppose in the above position White plays 1.Kd4 Now black has the option of...opposing the passage of the white king by playing 1...Kd6 ...Notice that the kings are directly opposed to each other, and the number of intervening squares between them is odd - one in this case.[or, if he prefers he can 'pass' with his own king by replying 1...Kf5 .] =



 

The above position shows to advantage the enormous value of the opposition. The position is very simple. Very little is left on the board, and the position, to a beginner, probably looks absolutely even. It is not the case, however. Whoever has the move wins. Notice that the kings are directly in front of one another, and that the number of intervening squares are even. Now as to the procedure to win such a position. The proper way to begin is to move straight up. Thus: 1.Ke2 Ke7 [The process has been comparatively simple in the variation given (below), but Black has other lines of defence more difficult to overcome. Let us begin anew. 1...Kd8 Now in order to win the white king must advance. There is only one...square where he can go, 2.Kf3 , and that is the right place. (Now if 2.Kd3 Kd7; or if 2.Ke3 Ke7 , and Black obtains the opposition in both cases. (When the kings are directly in front of one another, and the number of intervening squares between the kings is odd, the player who has moved last has the opposition.)) Therefore it is seen that in such cases, when the opponent makes a so-called waiting move, you must advance, leaving a rank or free file between the kings. Therefore we have: 2...Ke7 Now it would be bad to advance, because then Black, by bringing up his king in front of your king, would obtain the opposition. It is White's turn to play a similar move to Black's first, viz: 3.Ke3 which brings the position back to the first variation shown.] 2.Ke3 Ke6 3.Ke4 Kf6 Now White can exercise the option of either playing 4.Kf4 and preventing the black king from passing, thereby keeping the opposition...White takes (this) course... [or, of playing 4.Kd5 and thus passing with his king. Mere counting will show that (this) course will only lead to a draw...] 4...Kg6 [If 4...Ke6 5.Kg5 will win.] 5.Ke5 Kg7 Now by counting it will be seen that White wins by capturing Black's b-pawn. The student would do well to familiarise himself with the handling of the king in all examples of opposition. It often means the winning or losing of a game. +-
 

                                                                        




The above position is an excellent proof of the value of the opposition as a means of defence. White is a pawn behind and apparently lost, yet he can manage a draw as follows: 1.Kh1! The position of the pawns does not permit White to draw by means of the actual or close opposition, hence he takes the distant opposition: [in effect if 1.Kf1 (actual or close opposition) 1...Kd2 2.Kf2 Kd3 and White cannot continue to keep the lateral opposition essential to his safety, because of his own pawn at f3.] On the other hand, after the text move, if 1...Kd2 [Going back to the original position, if 1 Kh1 1...g4 White plays: 2.Kg2 (White does not play 2.fxg4 because 2...e4 will win) 2...Kd2 (If 2...gxf3+ 3.Kxf3 followed by Ke4 will draw.) 3.fxg4 e4 and mere counting will show that both sides queen, drawing the game.] 2.Kh2 Kd3 3.Kh3! Ke2 4.Kg2 Ke3 5.Kg3 Kd4 6.Kg4 attacking the pawn and forcing Black to play 6...Ke3 when he can go back to 7.Kg3 as already shown, and always keep the opposition.If the student will now take the trouble to go back to the examples of king and pawns which I have given in this book (see Section 3), he will realise that in all of them the matter of the opposition is of paramount importance; as in fact it is in nearly all king and pawn endings, except in such cases where the pawn position in itself ensures the win. =
 

                                                                        The opposition


Queen's Gambit Declined Slav, Dutch

Pin It
Queen's Gambit Declined Slav, Dutch (D19)
 
 
 
 Huebner,R - Mastrovasilis
Germany vs Greece match, Corfu, 1999

1.d4 d5 2.Nf3 Nf6 3.c4 c6 4.Nc3 dxc4 5.a4 Bf5 6.e3 e6 7.Bxc4 Bb4 8.0–0 Nbd7 9.Qe2 Bg6 10.e4 0–0 11.Bd3 Bh5 12.Bf4 Qe7



The favoured move these days. [Instead, the sharp 12...e5 is met by 13.dxe5 Ng4 14.Qc2 when Black hasn't been able to equalize, e.g. 14...Qa5 15.Na2! Rfe8 16.Be2 Bg6 17.Bg3! and Black has problems getting his pawn back, B.Kouatly-E.Meduna, Trnava 1987.; Once upon a time they used to play 12...Re8 , but the text (which links the rooks) is considered to be slightly more flexible. Play could then continue 13.e5 Nd5 14.Nxd5 cxd5 and we obtain the same central pawn formation as in the game. Continuing further with 15.h3 a6 16.Rfc1 Nb8! (redeploying to c6 is a typical manoeuvre in this line and represents a better option than 16...Be7 17.Rc3!? Bxf3 18.Qxf3 Nb8? , as after 19.Bxh7+ Kxh7 20.Qh5+ Kg8 21.Rg3 Black was in trouble in L.Polugaevsky-E.Torre, London 1984) 17.g4 Bg6 18.h4 Nc6 19.h5 Bxd3 20.Qxd3 f6 21.Kg2 , L.Polugaevsky-J.Gomez Baillo, Lucerne 1985, and now Black should switch back to the f-file with 21...Rf8 .] 13.e5 Nd5 14.Nxd5 cxd5 15.Rfc1






 [The continuation of L.Gofshtein-M.Sadler, Ischia 1996, was instructive: 15.Qe3 Rfc8 16.a5 Bg6 17.Ra4 Bxd3 18.Qxd3 Rc4 19.h4? (White should play something like 19.Bg5 Qf8 20.Bd2 Bxd2 21.Rxc4 dxc4 22.Qxd2 to hold the balance) 19...h6 20.h5 Nc5! (a surprise!) 21.dxc5 Rxf4 and Black had the advantage.] 15...Nb8 [The sensible 15...Rfc8! is playable, when (if need be) Black can play ...Nf8 to defend.TIP: Taking time to improve your pieces is commendable, but don't forget to look after your king!] 16.Qe3 Nc6!? [After 16...Bxf3 17.Qxf3 Nc6 Black's king would be too vulnerable.] 17.Ng5 Bg6 18.Bxg6 fxg6 19.Qh3 Forking e6 and h7, but it's far from over... 19...h6 20.Qxe6+ Qxe6 21.Nxe6





 Rfe8? [Black misses a reasonable chance of saving the game with 21...Nxd4! 22.Nxf8 (22.Nxd4 Rxf4 23.Ne6 Rf7 is equal) 22...Rxf8 23.Be3 Nb3 24.Bxa7 Ra8 25.Bb6 Nxc1 26.Rxc1 Rxa4 27.Kf1 with only a small pull for White.] 22.Nc7 Nxd4 23.Rd1 Ne2+ 24.Kf1 Nxf4 25.Nxe8 Rxe8 26.Rd4





Black had probably overlooked this fork when playing 21...Rfe8, so now he loses the exchange and with it any hopes of saving the game. 26...a5 27.Rxf4 Rxe5 28.Rd1 Threatening Rfd4. 28...Bc5 29.Re1 Rh5 30.h3 b6 31.Re8+ Kh7 32.Ke2 d4 33.Kd3 Rd5 34.Rf7 g5 35.Rb8 Rd6 36.Rbb7 Rg6 37.Ke4 d3 38.Kxd3 Rd6+ 39.Kc4 Bd4 40.Rfd7 Rxd7 41.Rxd7 1–0






 
Pin It

Gabriel,C - Akopian,V 

Germany vs Armenia match, Baden Baden, 1996

Queen's Gambit Declined, Ragozin, Vienna Variation

 

1 d4  d5  2 c4  c6  3 Nf3  Nf6  4 Nc3  dxc4  5  a4  Bf5  6 e3  e6  7  Bxc4  Bb4  8.  0-0  Nbd7


 


[8...0–0 9.Qe2 Nbd7 10.e4 Bg6 is the most common move order.] 9.Qe2 Bg6 10.e4 0–0 Transposing back to the main line. 11.Bd3 Bh5 12.e5 Nd5 13.Ne4 Diagram




White uses the e4-square for his knight but allows Black in return to keep control of d5. [The alternative plan 13.Nxd5 cxd5 14.Qe3 leads to a 'French Defence style' centre. Black's light-squared bishop being outside the pawn chain which is a plus for him, but even so Black will need to react to White's space advantage at some point, probably with a timely ...f7-f5. He can implement this almost immediately or redeploy his pieces first, e.g. 14...Be7 (or 14...h6 15.Ne1 f5 16.exf6 Qxf6 , B.Gelfand-J.Lautier, Horgen 1994) 15.Bd2 Nb8 16.Ne1 Bg6 17.f4 Nc6 18.g4 f5 , A.Beliavsky-Z.Ribli, Slovenia 2001, and in both cases Black can look forward to the middlegame with confidence. Another example of this pawn structure can be seen in the nexxt game.] 13...Be7 14.Ng3 Bg6 15.Bxg6 hxg6 Diagram




[The alternative 15...fxg6 would enable Black to have influence on the f-file and keep his king snug behind the pawn mass. However, the e6-pawn would then be weak and the doubled g-pawns will be devalued in the endgame.] 16.Ne4 With the threat of planting a knight on g5 followed by bringing the queen to the h-file. So it's imperative that Black opens the centre to create counterplay. 16...c5! 17.Rd1 [17.Nc3 is probably better, to eliminate the d5-knight, e.g. 17...Qb6 18.Nxd5 exd5 19.dxc5 Nxc5 20.Be3 Qe6 , Xu Jun-V.Akopian, Moscow Olympiad 1994 with chances for both sides. Black has achieved a fair share of the centre.; Instead, Hübner points out that White can't simply play for mate with 17.Nfg5? , because of 17...cxd4 18.Qg4 Nxe5 19.Qh4 Bxg5 20.Nxg5 Nf6 and White's bravado has just cost him two pawns.] 17...cxd4 18.Rxd4 Rc8 Diagram



White's attacking ideas are no longer realistic and he will have to pay for his weaknesses at e5, b3 and b4. 19.Be3 Qc7 20.Rc1 Qb8 The e-pawn cannot be defended. 21.Nc3 Nxc3 22.bxc3 Nxe5 23.Bf4 Nxf3+ 24.Qxf3 Qa8 Black has a clear extra pawn and only needs to play ...Rfd8 and ...b7-b6 to tidy up, so White must try and force the issue. 25.Rd7 Bf6 26.Qxb7 Qxb7 27.Rxb7 Rc4! The long forcing line has left Black on top. 28.Bd6 Diagram




[28.Be3 a5 29.Ra7 Rxa4 30.c4 might be a better chance.] 28...Rd8 29.Bb4 Bxc3! Exploiting the back rank. 30.Bxc3 Rxc3 31.Rcb1 a5 32.Ra7 Rcd3 33.g3 Rd1+ 34.Rxd1 Rxd1+ 35.Kg2 Rd5 36.Ra8+ Diagram




36...Kh7 37.h4 g5 Black exchanges his front g-pawn to improve his structure and free his king. 38.hxg5 Rxg5 39.Kf3 Rf5+ 40.Ke3 g5 41.Ra7? Giving too much ground on the kingside. [41.f3 was better.] 41...g4 42.Rc7 Kg6 43.Rc4 Kg5 44.Rc7 Kg6 45.Ke2 Re5+ 46.Kd3 f6 47.Ra7 f5 48.Kd2 Rc5 49.Ke3 Kf6 50.Kd3 Ke5 51.Ra6 Kd5 52.Ra8 Kd6 53.Ra6+ Ke5 54.Rb6 Kf6 55.Ra6 Rd5+ 56.Ke3 Re5+ 57.Kd3 Ke7 58.Ra7+ Kd6 59.Ra6+ Kd7 Bringing the king over to harass the opposing rook. 60.Kd4 Re4+ 61.Kc5 Rxa4 62.Ra7+ Ke8 63.Kd6 Re4 64.Rxa5 Kf7 Although all the pawns are on one small front, White's king is cut off and cannot help out as Black converts his extra pawn. 65.Ra2 Kf6 66.Rd2 f4 67.gxf4 Kf5 68.Ke7 Rxf4 69.Kd6 e5 70.Re2 Rd4+ 71.Ke7 e4 72.Ra2 e3 0–1 


 

 

Monday, April 16, 2012

Sicilian Dragon

Pin It
DownLoad the File Sicilian Dragon,




                                 Sicilian Dragon
                                                                  Click to Download



Sunday, April 15, 2012

Grunfeld Defence Exchange Variation

Pin It