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ÿþSmyslov starts being nervous. Viacheslav Eingorn: 36& Qg4 37.Qf2 To the madness of the brave, we sing the The positional piece sacrifice as glory! By playing 37.Nd3 White already could try to hold the line. a technical reception 37...cb4 After all. Not bad decision, of course, but Here we shall talk about the positional 37...Rg8 was more consecutive, sacrifices which are aiming to provide the emphasizing the superiority at the equal further movement of pawns. The motive for quantity of pieces. such transformations quite often arise in 38.cb4 different opening structures: Rue Lopes, A new life begins >n the board and Black French, Nimsovich, Slav, KID, etc. Usually appears to be not ready for it: he makes two those operations are not based on the second-rate moves and then commits a concrete calculation and therefore they do decisive mistake. not offer any quick and clear result  instead 38& Rbb8 39.c5 Nc8 40.Rc1 Kd8 41.c6 both players get a chance to practise in and white won (58) 1:0. intuition and psychology. Let us look at the following examples: 2) To beat or not to beat 1) Peaceoffering Mamedyarov S. : Huzman Warsaw 2005 Bronstein D. : Smyslov V. Budapest (Candidates) 1950 1.d4 e6 2.c4 Nf6 3.Nc3 Bb4 4.a3 Bc3 5.bc3 XIIIIIIIIY c5 6.f3 d5 7.cd5 Nd5 8.dc5 Qa5 9.e4 Nc7 10.Qd4 f6 11.Qb4 Nc6 12.Qa5 Na5 13.Rb1 9r+-+-+-+0 Bd7 14.Ne2 e5 9+-mknsn-+-0 XIIIIIIIIY 9ptr-zp-+q+0 9r+-+k+-tr0 9tR-zpPzp-+p0 9zppsnl+-zpp0 9-+P+Pzpp+0 9-+-+-zp-+0 9+-zPQ+P+-0 9sn-zP-zp-+-0 9-+NvL-+PzP0 9-+-+P+-+0 9+-+-+RmK-0 9zP-zP-+P+-0 xiiiiiiiiy 9-+-+N+PzP0 White s position is lost in all respects, but he 9+RvL-mKL+R0 doesn't want to wait passively for the decision of his fate. xiiiiiiiiy 35.Nb4 The game quickly passed to the ending The knight stands  en prise without where Black plans sooner or later to creating any threats. This looks like a joke: reestablish the material balance. although Black can accept the gift (at once 15.Nd4 or after preliminary 35& Kb7), he prefers Not so easy! Now Black must either agree to not to pay attention to opponent s the radical change of position or to give up provocation. his intention of getting pawn back. 35...gf3 36.Qf3 15...0 0 0 But now that knight-suicide has a The safety comes first. Meanwhile, the convenient square d3 at his disposal and FIDE Surveys  Viacheslav Eingorn 1 principled continuation 15...ed4 16.cd4 was Such flank sacrifices are correct almost fully justified  for instance, always and the opponent may need to be 16...f5 17.Be2 (17.Bd2 Nc6 18.d5 fe4 19.fe4 rather careful to defend well. 0 0 0 20.dc6 Bc6) fe4 18.fe4 0 0 0 19.d5 11& ed4 12.ed4 Be7 Rhe8 20.Rb4 Nd5 21.ed5 Bf5. The piece The preliminary exchange 12...ab4 13.ab4 refund in an appropriate moment is the Ra1 14.Qa1 could be a wrong decision: after standart mode of defence. 14& Be7 15.Qa5! Bd8 (or 15...Qa5 16.ba5 16.Nb5 Nb5 17.Bb5 Kc7 18.Ke2 Be6 0 0 17.a6) 16.0 0 Ne4 17.Qc7 Bc7 18.Bc6 19.Be3 0 0 19.b5 white pawns become dangerous. This is an inaccuracy which leads to 13.0 0 0 0 14.Bg5 ab4 15.ab4 Ra1 exchange of all light pieces. Here 15& Rb8 was more to the point as now 19...Bc4 20.Bc4 Nc4 21.Rb4 Ne3 22.Ke3 Black runs into difficulties. Rd7 23.Rhb1 Kc6 24.R1b2 Rhd8 25.Ke2 16.Qa1 Bd8 17.Bd3 Ne4 18.Bd8 Rd8 19.b5 Kc5?! Ndc5 20.dc5 Black is asking for troubles, he has better to This automatical reply keeps some White s wait. advantage, but 20.Rc1! was stronger. 26.Rb7 Kc4 27.Kf2 Kc3 28.Kg3 g6 29.a4, 20& Qc5 21.Qe5 Nd6 22.Rb1 Re8 23.Qb2 and White won at a later date (41) 1:0. Nc4 24.Qc3 Bb7, and the game ended in a draw (35) draw. 3) Be prepared 4) Tastes differ Belov : Jakovenko Sochi 2005 Tal M. : Ghitescu Miskolc 1963 1.d4 d5 2.c4 c6 3.Nc3 Nf6 4.Nf3 a6 5.e3 b5 XIIIIIIIIY 6.c5 Nbd7 7.Bd2 a5 9r+-wqrvl-+0 The modern reality of Slav: Black does not want to cede territory on the queen s side 9+-+lsnp+k0 but now the capture on b5 becomes a quite probable thing. 9p+-zp-snpzp0 8.a3 Qc7 9+pzpPzp-+-0 Look at that quick catastrophe: 8...g6 9.b4 ab4 10.ab4 Bb7 11.Nb5 cb5 12.Bb5 Qc8 9-+-+P+-+0 13.Ne5 Ba6 14.Bc6 Rb8 15.Qa4, Ftacnik : 9+PzP-vLNsNP0 Movsesian, Czechia 2010. 9.b4 e5 10.Nb5 cb5 11.Bb5 9P+LwQ-zPP+0 XIIIIIIIIY 9tR-+-tR-mK-0 9r+l+kvl-tr0 xiiiiiiiiy 9+-wqn+pzpp0 The piece sacrifice for the two central pawn is usually the most problematic one. For 9-+-+-sn-+0 instance, in the position on diagram (from 9zpLzPpzp-+-0 Smyslov variation of Ruy Lopez) White stands better and the question is whether he 9-zP-zP-+-+0 should now complicate the game. 9zP-+-zPN+-0 19.Bc5 By evidence of Tal, he owed this move to 9-+-vL-zPPzP0 Bronstein and his game with Royan (Moscow 1956): 1.e4 e5 2.Nf3 Nc6 3.Bc4 9tR-+QmK-+R0 Nf6 4.Ng5 d5 5.ed5 Na5 6.d3 h6 7.Nf3 e4 xiiiiiiiiy 8.de4 Nc4 9.Qd4 Nb6 10.c4 etc. Of course, FIDE Surveys  Viacheslav Eingorn 2 in the present case we really have the ground XIIIIIIIIY for discussion, but 5very man to his taste. 5 9r+-wqr+k+0 later Geller did not follow Tal and Bronstein (oh that Bronstein!)  he played prosaically 9+lzp-snpvlp0 19.c4 a5 20.cb5 (Geller - Liebert, Lugano 1968), refusing even the enhanced version 9p+-zp-snp+0 of sacrifice: 20.Bc5!? dc5 21.Ne5. 9+p+Pzp-+-0 19...dc5 20.Ne5 Nc8 Black hastens to part his forces pending the 9-+-+P+-+0 advancement of White s pawn phalanx, 9+PzP-+N+P0 20...Kg8 deserved more attention instead. 21.f4 Qe7 9P+L+-zPP+0 Quite illogical, also here 21...Kg8 was 9tR-vLQtRNmK-0 preferable. 22.c4 Bg7 23.Nf3 bc4 24.bc4 xiiiiiiiiy Tal vainly ignores the variation 24.e5 c3 The point of departure. (24...Nd5 25.Qd5 Nb6 26.Qe4) 25.Qd1 Nd6 15...Ne4 16.Be4 f5 17.Bc2 Nd5 26.ef6 Qf6 27.Nh5, where he could get Most likely this continuation and the somewhat better chances. Now Black s variation 17...e4 18.Nd4 Nd5 19.Bd2 are of pieces come into battle. equal worth  now after 18.Bd2 c5 19.Ne2 24...Nd6 25.e5 Nc4 26.Qc3 Bb5 27.Rad1 the simple move transposition could arise. Rad8 White prefers to take another possibility. What a pity: Ghitescu at all costs tries to 18.b4 Nc3 return the game into the usual frame. Why This capture of third pawn looks very not 27...Nb6 28.d6 Nfd5 29.Qc5 Qa7? natural but it appears to be the reason of 28.d6 Nd6 29.ed6 Qb7 further Black s failure. eanwhile, by Decisive mistake. After 29...Qf8 30.Qc5 playing 18...c5 he could keep activity in Re1 31.Ne1 Rc8 Black could hope t> win position with mutual chances. the pawn d6 back. 19.Bb3 d5 20.Qc2 Ne4 30.Ne5 Nd7 31.Nh5 Bh8 32.Qg3 Ne5 Now the Black s central pawns will not 33.fe5 Qd7 34.Nf4 Be5 35.Bg6 move and the initiative passes to the and White won (41) 1:0. opponent. This is not a good sign  one can only imagine that Philidor or Bronstein 5) !ui prodest? could play here 20& c5!? all the same. 21.Re4 Carlsen M. : Navara D. Tempting but a little bit premature decision. Dresden (ol) 2008 21...fe4 22.Ng5 a5 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.0 The subtle reply 22...Bf8 could help Black 0 Be7 6.d3 d6 7.c3 0 0 8.Re1 Re8 9.Nbd2 to maintain the balance, now his position has Bf8 10.h3 b5 11.Bc2 Bb7 12.d4 g6 13.d5 become worse. Ne7 14.Nf1 Bg7 15.b3 23.ba5 Ra5 24.Ne4 Kh8 25.Bg5 Qc8 26.Nf6 Rd8 27.Ne3 After entering this reserve into the game White get too big preponderance in strength. 27& e4 28.Rc1 h6 29.Ne4 de4 30.Bd8 Qd8 31.Qc7, and White won (50) 1:0. FIDE Surveys  Viacheslav Eingorn 3

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