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Lev Psakhis vs Semko Semkov
Chigorin Memorial (1982), Sochi URS, rd 8, Dec-??
Queen's Gambit Declined: Semi-Tarrasch Defense. Main Line (D42)  ·  1-0

ANALYSIS [x]

FEN COPIED

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Kibitzer's Corner
May-03-17
Premium Chessgames Member
  DanQuigley: I found this game very difficult to understand and so made my own careful analysis. Given that White makes some errors and has a number of equally good choices for many moves of the game, I don't feel this is a good candidate for Guess the Move. 1.d4 Nf6 2.c4 e6 3.Nc3 d5 4.Nf3 c5 5.cxd5 Nxd5 6.e3 <White opts for a more stable center than the equally popular alternative 6.e4> 6...Nc6 7.Bd3 Be7 8.0-0 0-0 9.a3 <White accepts an isolated pawn.> 9...cxd4 10.exd4 <If 10.Nxd4, after 10...Nxd4 11.exd4 White has the same isolated pawn only with a minor piece each less.> 10...Bf6 11.Re1 g6 <11...Nxd4 12.Nxd4 Bxd4 13.Bxh7+ Kxh7 14.Qxd4 only serves to allow White to rid himself of an isolated pawn and gives White a good position in the center.> 12.Be4 <Subtle. White threatens to unisolate his d-pawn by 13.Nxd5.> 12...Nce7 13.Qb3 b6 <Black has a cramped position.> 14.Bh6 <Unisolating the d-pawn no longer promises White much. After 13.Nxd5 exd5 14.Bd3 Nf5 the position is approximately equal. In the spirit of not exchanging pieces until an advantage in doing so can be shown, White looks elsewhere.> 14...Bg7 <Exchanges only help the side with the better pawn structure.> 15.Bg5 f6 16.Bd2 Rf7 17.Bd3 <Since exchanging on d5 is no longer a good option, the Bishop finds itself misplaced on e4. From d3, the Bishop eyes b5 as a square from which to pressure Black's position. More directly, the Rook on e1 eyes the newly created weak pawn on e6.> 17...Bb7!? <Surprisingly, Black calculates a forcing variation resulting from this move and elects to jettison the e6 pawn in order to complete his development and have all his pieces on optimal squares. The material holding line 17...Qd7 18.Bb5 Qd6 19.Ne4 gives White has all the play on the central squares.> 18.Rxe6 Nxc3 19.bxc3 Bd5 20.Bc4 Rc8 21.Bxd5 Qxd5 22.Rb1! <When he sacrificed the e6 pawn, Black may have counted on 22.Qxd5 Nxd5, with more than enough play for the e6-pawn. The resilient text protects White's weak pawns and the Rook on b3 proves hard to get at.> 22...Bf8 23.Kf1! <All of White's pieces are on their best squares. Only White's King can improve its position.> 23...Qxb3 24.Rxb3 Nd5 25.Ke2 <White does not worry about king safety now.> 25...Rfc7 <Begins the manoeuvre Rf7-c7-c4-a4.> 26.Kd3 <The cavalry arrives in the nick of time to save the c3-pawn.> 26...a6 27.Re1 b5 <White has a new backward pawn: c3.> 28.Ra1 Rc4 29.Ne1 Ra4 <Attacks the isolani on a3.>
May-03-17
Premium Chessgames Member
  DanQuigley: 30.Nc2 Nb6 31.Ne3 Nc4 <The pressure on the isolated pawn grows. The knight likes it on c4.> 32.Bc1 Kf7 33.h3 Bd6 34.Rbb1 Nb6 35.Ra2 f5 36.g3 <Controls f4.> 36...Ke6 37.h4 Bf8 38.Re2 Kf7 39.Nc2 <39.Rb3 Bd6 is good for White.> 39...Nd5! <39...Rac4 40.Rb3 Na4 41.Bd2=> 40.Bb2 Bd6 41.Rbe1 Nf6 42.Nb4 a5 43.Nc2 Ne4 44.Rc1 Bf8? <44...h5 45.Ra1=> 45.g4! Rd8 46.gxf5 gxf5 47.Rb1?! <47.Ra1 Bh6 48.Ne3 Bxe3 49.Kxe3 Rc4 is good for White.> 47...Nc5+ 48.Ke3 Ne4 49.Kf4 Kf6 50.Ne3 Bh6+ 51.Kf3 Bxe3 52.fxe3 <Black has a new backward pawn: f5.> 52...Rc4 53.Ba1 Rb8 <53...Nxc3! 54.d5 (54.Bxc3 Rxc3 55.Rxb5 Rxd4 56.Rc2 Rxc2 57.exd4=) 54...Rxd5 55.Rc2 Rdc5 56.Rxc3 Rxc3 57.Rb3 b4 58.axb4 axb4 59.Rxb4 Kg6 60.Bxc3 Rxc3 61.Rb6+ Kh5 62.Kf4 h6=> 54.Rb3 <54.Rc2 Ke6=> 54...Ke6= 55.Rg2 Rb7 <55...Kd5 56.Rb1=> 56.Rb1 <56.h5 is good for White.> 56...Rb8 <56...Nxc3 57.Bxc3 Rxc3 58.Rgb2 Rxa3 59.Rxb5 Rxb5 60.Rxb5=> 57.h5 a4 58.h6 Rc6 <58...Nxc3 59.Bxc3 Rxc3 60.Rg7 is good for White.> 59.Rb4 <59.Rh1 Rc7 is good for White.> 59...Rc4 60.Rg7 Rxb4 61.cxb4?! <61.axb4 Rd8 is good for White.> 61...Rc8= 62.d5+ Kxd5 63.Re7 Rc1 64.Bg7 Rf1+ 65.Kg2 Rf2+ 66.Kg1 Rf3 67.Bd4 Rg3+ 68.Kf1 Rh3? <68...Rf3+ 69.Kg2 Rg3+ 70.Kh2 Rg6 71.Rxh7 Ng5 72.Rd7+ (72.Rh8 Nf7 and Black is better.) 72...Ke4 and Black is better.> 69.Rxh7 f4? <69...Rf3+ 70.Ke1 Rh3 71.Ke2=> 70.Rd7+? <70.Re7!? Ng3+ 71.Kg2 Rxh6 72.Re5+ Kc4 73.exf4 Kxd4 74.Kxg3> 70...Ke6= 71.Rd8 Ng3+?? <71...Nd2+!? 72.Ke2 Nc4=> 72.Kg2 Rxh6 73.exf4 <White has a new passed pawn: f4.> 73...Ne4 74.Be3 Rh5 75.Rb8 Rd5 76.Kf3 Kf5 77.Rf8+ Nf6 78.Bf2 <78.Ke2 Ke6 White is better.> 78...Ke6 79.Bh4 Nd7 80.Re8+ Kf5 81.Re7 <81.Bd8 Rd3+ 82.Re3 Rb3 is better for White.> 81...Rd3 <Black forks: a3+f3.> 82.Ke2 Rd5?? <The losing move. 82...Rd6 controlling the b6 square draws 83.Bg5 (83.Ke3 Nb6 84.Re5+ Kg4 85.Be7 Nc4+ 86.Ke4 Nd2+ 87.Ke3 Nc4+ =) 83...Rd5 84.Ke3 Rd6 85.Kf3 Rd3+ 86.Kf2 Nb6 87.Re5+ Kg4 88.Rxb5 Nc4 89.Rc5 Nd6 90.Ra5 Rxa3=> 83.Kf3 Rd3+ 84.Ke2 Rd5 85.Ke3 Nb6 86.Rf7+ Kg4 87.Bf2 Rd8 <87...Nc4+ doesn't improve the situation 88.Ke4 Rd8 89.Rg7+ Kh5 90.f5 Nd6+ 91.Kf4 > 88.Rg7+ Kf5 89.Rg5+ Kf6 90.Rc5 Rb8 91.Ke4 <White prepares f5.> 91...Nc4 92.Rc6+ <92.Bd4+!? Ke7 93.Rc7+ Ke6 94.f5+ Kd6 95.Rg7 Re8+ 96.Kf4 > 92...Kf7 93.f5 Rb7 94.Rh6 Re7+ <94...Rd7 95.Rh7+ Ke8 96.Rh3> 95.Kf4 Nxa3?? <further deteriorates the position. 95...Rd7!? 96.Rh7+ Ke8 > 96.Bc5 Rd7?? terrible, but what else could Black do to save the game? 96...Re1 97.Rh7+ Kg8 > 97.Rh7+ Ke8 98.Rh8+ Kf7 99.Rh7+ <99.Rf8+ finishes off the opponent 99...Kg7 100.f6+ Kg6 101.Ke5 > 99...Ke8= 100.Rh8+ Kf7 101.Rf8+ Kg7 102.f6+ Kg6 103.Ke5 Rc7 104.Rg8+ Kh7 105.Re8 <105.Rg1 Nc4+ 106.Ke6 Rc6+ 107.Kf5 Nd6+ 108.Bxd6 Rxd6 > 105...Kg6 106.Rg8+ <Twofold repetition.> 106...Kh7 107.Rg1 Nc4+ 108.Ke6 Rc6+ <108...a3 does not improve anything 109.f7 Rxf7 110.Kxf7 > 109.Kf5 Nd6+ <109...Rc7 is the last straw 110.Rh1+ Kg8 > 110.Bxd6 Rxd6 111.f7 Rd2 <111...Rd3 a fruitless try to alter the course of the game 112.Rg8 Rf3+ 113.Ke6 Re3+ 114.Kd5 > 112.Rg8 Rf2+ 113.Ke6 Re2+ 114.Kd6 1-0
May-03-17  jvv: Black should play simply 56... Nxc3.

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