Country Name Title Rate  R1   R2   R3   R4   R5   R6  Res.
  Zahar Efimenko GM 2689 1/2 0 1/2 1/2 1/2 1/2 2.5
  Arkadij Naiditsch GM 2684 1/2 1 1/2 1/2 1/2 1/2 3.5

Efimenko - Naiditsch (1), 12.08.2010
Naiditsch - Efimenko (2), 13.08.2010
Efimenko - Naiditsch (3), 14.08.2010
Naiditsch - Efimenko (4), 16.08.2010
Efimenko – Naiditsch (5), 17.08.2010
Naiditsch - Efimenko (6), 18.08.2010

Efimenko - Naiditsch (1), 12.08.2010
Catalan Opening E04
[Mikhail Golubev]
1.d4 Nf6 2.c4 e6 3.Nf3 d5 4.g3 dxc4 5.Bg2 c5 6.0–0 Nc6 7.dxc5 [The most common continuation is 7.Qa4 Bd7 8.Qxc4 as, for example, in the recent game Kramnik-Naiditsch, Dortmund 2010.]
7...Qxd1 8.Rxd1 Bxc5 9.Nbd2 c3 10.bxc3 0–0 11.Nb3 Be7 12.Nfd4 Bd7 13.Nxc6 Bxc6 14.Bxc6 bxc6 15.c4 [White is slightly better in the ending.]
15...Rfc8!? N [A new move. In Yermolinsky-Gelfand, Sverdlovsk 1987 Black played 15...a5; some other moves were tested as well.]
16.Be3 c5 17.Rab1 [Possibly stronger was 17.f3! as suggested by Zahar Efimenko's assistant GM Mikhail Brodsky, and if 17...a5 18.a4, rather than 18.Rab1 a4 19.Nc1 Rab8 20.Nd3 Nd7 21.Bf4 Rb6.]
17...Ng4 18.Bd2 [In the variation 18.Rd7 Nxe3 19.fxe3 Kf8 20.Na5 Bd8 21.Rbb7 Bxa5 22.Rxf7+ White has no more than a perpetual check.]
18...Ne5! [Black has enough resources to hold.]
19.Na5 Bd8 20.Bc3 Bxa5 21.Bxe5 f6 22.Bf4 Rd8 23.Bd6 Rac8 24.Be7 Rd4 25.Rxd4 cxd4 26.c5 Bd8 27.Bd6 Bc7 28.Rb7 Bxd6 29.cxd6 Rd8 30.d7 a5 31.Kg2 Kf7 32.Kf3 f5 [Black avoids the line 32...e5 33.Ke4 Ke6 34.f4! f5+ 35.Kd3 exf4 36.gxf4 Rxd7 37.Rxd7 Kxd7 38.Kxd4 Kd6 where he is, likely, lost. For example: 39.h4 g6 40.e3 Kc6 41.Ke5 Kc5 42.Kf6 Kb4 43.Kg7 Ka3 44.Kxh7 Kxa2 45.Kxg6.]
33.g4 g5 34.Ra7 a4 35.Ra5 Rxd7 36.gxf5 d3! 37.exd3 Rxd3+ 38.Kg4 Kf6 39.fxe6 Rd4+ [Possible was 39...h6!? with a trap 40.Rxa4?? h5+! 41.Kxh5 Rh3+ 42.Kg4 Rh4+.]
40.Kf3 Rd3+ 41.Kg2 Ra3 42.Re5! [White preserves an extra pawn. But anyway the draw is inevitable.] Ke7 [But not 42...Kxe5?? 43.e7.] 43.Rxg5 [Or 43.Re2 g4!]
43...Kxe6 44.Rh5 Rxa2 45.Rxh7 a3 46.Ra7 Ra1 47.h4 Kf5 48.Ra5+ Kg6 49.Kf3 a2 50.h5+ Kg7 51.Kf4 Rh1 52.Rxa2 Rxh5 53.Ke4 0,5-0,5

Naiditsch - Efimenko (2), 13.08.2010
Ruy Lopez C67

[Mikhail Golubev]
1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.0–0 Nxe4 5.d4 Nd6 6.Bxc6 dxc6 7.dxe5 Nf5 8.Qxd8+ Kxd8 9.Nc3 Ke8 10.Bf4!?[Naiditsch already used this rare move.]
10...Be6 11.Rfd1[11.a3 h6 12.Rad1 occurred in Naiditsch-Jakovenko, Poikovsky 2010.]
11...h6 12.g4 N Ne7 13.h3 Nd5[If 13...h5 14.Ng5!.]
14.Bd2 Nxc3[Preventing Ne4. Still, the exchange does not look necessary.]
15.Bxc3 c5 16.Kg2 Be7 17.Ng1![A clever retreat. White is somewhat better.]
17...h5 18.f3 Rd8[Black could have tried 18...Bc4!?, preventing Ne2. Then, 19.b3 (19.f4!?) 19...Ba6 20.e6 hxg4!, etc. is not dangerous for him.]
19.Ne2 Rxd1 20.Rxd1 hxg4 21.hxg4 Bg5 22.a3 Ke7 23.Bd2! Bxd2 24.Rxd2 b5?[A wrong move, which weakens the c5 pawn.]
25.Nc3! Rb8[After 25...b4?! unpleasant is 26.Nd5+!, but not 26.axb4 cxb4 27.Nb5 a5!? 28.Nxc7 Rc8.]
26.Ne4![Nothing special is achieved by White after 26.Nd5+ Bxd5 27.Rxd5 c4 28.f4 Ke6! 29.Rc5 Kd7.]
26...c4[After 26...b4!? White should play 27.a4!, preserving the advantage. Weaker is 27.Nxc5?! bxa3 28.bxa3 Rb5.]
27.Kg3 a5 28.f4! g6?![Another weakening, after which Black's chances to save the game are minimal. More stubborn could have been 28...c6!?, preparing ...Bd5.]
29.Kh4![The white king goes to g5, supporting f4-f5].
29...b4 30.axb4 axb4 31.Kg5 Rb5[Preventing f4-f5, but now the black king is danger.]
32.Nf6 c3 33.bxc3 bxc3 34.Rh2![A decisive activation of the rook.]
34...Bd5[White is also winning after 34...Rb2 35.Rh8! Bd7 36.Nd5+, etc.]
35.Rh3![And the rest was easy for Naiditsch.]
35...Bc6 36.Rxc3 Rb6 37.Rc5 Ra6 38.Kh6 Kf8 39.c4 Rb6 40.Nd5 Bxd5 41.cxd5 Rb7 42.d6 cxd6 43.exd6 1–0

Efimenko - Naiditsch (3), 14.08.2010
Nimzo-Indian E20

[Mikhail Golubev]
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Nf3 c5 5.g3 0-0 6.Bg2 cxd4 7.Nxd4 d5 8.cxd5 Nxd5 9.Qb3 Qa5 10.Bd2 Nc6 11.Nxc6 bxc6 12.0-0 Bxc3 13.bxc3 Ba6 14.Rfd1 Qc5 15.e4 Bc4 16.Qa4 Nb6 17.Qb4 Qh5 18.Re1!?[The famous Kramnik's novelty from the 2008 world championship match. Since then, a couple of new games on the same topic were played.]
18...c5 19.Qa5 Rfc8 20.Be3 Be2 21.Bf4 Bd3[In Kramnik-Anand, Bonn Wch 2008 (Game 10) Black tried 21...e5 but did not manage to solve his problems and later lost.]
22.Rad1[In the game Mamedyarov-Jakovenko, Astrakhan 2010 (Round 1) White achieved no advantage after 22.e5 Nd5 23.Be3 Qxe5 24.Bxc5 Qc7 25.Qxc7 Rxc7.]
22...Be2[22...Bc2 23.Rc1 Bd3 transposes to the game.]
23.Rc1 Bd3! N [Mamedyarov-Leko, Astrakhan 2010 (Round 12) saw 23...Bg4?! 24.c4! Bh3 25.Bxh3 Qxh3 26.Qb5 f6 27.e5 with a big White's advantage.]
24.Bd6 [Black's novelty was already analysed by GM Shipov who provided the line 24.e5 Nc4 25.Qa6 g5! 26.Bxa8 Rxa8 with Black's attack.]
24...e5 [After the more obvious 24...Nc4 White must play 25.Qa6 - this line was undoubtedly prepared by Efimenko.]
25.Bxc5[After this capture, Black obtains a sufficient positional compensation for the pawn: White's dark squared bishop will be dominated by the black knight.]
25...Nc4 26.Qb5 a6 27.Qd7 Be2![Avoiding 27...Rd8 28.Qf5!.]
28.Be7[Black also seems to be OK after 28.Rc2 Bg4.]
28...Bg4 29.Qb7 f6!?[Black hardly should go for 29...Rcb8 30.Qd5 Be6 31.Qd1!. Possible was 29...Be6.]
30.Bc5[This retreat is unimpressive; maybe White could try 30.Rb1!?.]
30...Qe8[Around here only Black could have tried to play for a win, but Naiditsch did not find serious chances. The game ended in a repetition of moves.]
31.Be3 Be6 32.Bf1 Rcb8 33.Qc7 Rc8 34.Qb7 Rcb8 0,5-0,5

Naiditsch - Efimenko (4), 16.08.2010
Ruy Lopez C97

[Mikhail Golubev]
[The fourth game of the match turned to be tense long, and dissaponting for the local spectators, because Efimenko missed a clear win.]
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.0-0 Be7 6.Re1 b5 7.Bb3 0-0 8.c3 d6 9.h3 Na5 10.Bc2 c5 11.d4 Qc7 [Thousands of games were played in this classical Chigorin's system.]
12.d5 [A more common direction is 12.Nbd2 but the text is also sometimes used by the world's top players.]
12...Bd7 13.Nbd2 c4 14.Nf1 Nb7 15.Ng3 a5 16.Nh2 Nc5 17.f4 b4 18.f5!? N [White releases the tension in centre, preparing an attack on the kingside. But Black's counterplay on the queenside should give him good chances.]
18...Rab8 19.Re3 Kh8 20.Kh1 Bb5 21.Bd2 b3 [Another obvious idea was 21...Nd3.]
22.axb3 cxb3 23.Bb1 [After 23.Bxb3?! Black plays 23...Bd7!, regaining the pawn.]
23...a4 [White's rook and bishop are blocked on the queenside, but now Naiditsch finally begins his kingside assault.]
24.Nh5 Nxh5 25.Qxh5 g6!? 26.Qh6 Rg8 27.Rf3 [The immediate 27.Ng4!? was also possible.]
27...f6 28.Ng4 Be2 [Black also could have tried the less radical 28...Rbf8.]
29.Rg3 Bxg4 30.Rxg4 gxf5 31.Rh4 Rg7 32.exf5 Rbg8 33.Be3!? Bd8! 34.g4? [A wrong, gambling move. Instead, White could have maintained the approximate equality by 34.Rg4 Rxg4 35.hxg4 Rxg4 36.Bxc5 Qxc5 and now 37.Rxa4! regains the pawn, as 37...Rxa4? is impossible due to 38.Qf8#.]
34...Qb7! [Beginning of the sequence, which leads to a big Black's advantage.]
35.c4 Qb4! 36.g5 Qe1+ 37.Bg1 fxg5! 38.Rg4 [After 38.f6? gxh4 39.fxg7+ Rxg7 White loses.]
38...Qf1! [Ruslan Ponomariov, who witnessed the game, proposed another solution - 38...Nd7!?. And if 39.Qxd6 Nf6.]
39.f6 Qf3+? [Efimenko had not enough time before the control to calculate accurately the winning line 39...Bxf6 40.Be4 (otherwise White is simply two pawns down) 40...Qxa1 41.Bxh7 and now 41...Rf8!, Ponomariov.]
40.Kh2 Qxf6?! [Not 40...Bxf6? because of 41.Rg3!. But 40...Rf7! (GM Brodsky) was probably better than the text.]
41.Qxf6 Bxf6 42.Bxc5! dxc5 43.Rxa4 [After 43.Be4 Ra7! White's defence is not particularly easy.]
43...e4 44.Rxe4 Bxb2 45.Ra6 g4 46.Rxg4? [Naiditsch simlpy misses Black's next move. Correct was 46.hxg4 with all chances for a draw after, e.g., 46...Rxg4 47.Rxg4 Rxg4 48.Rb6 Be5+ 49.Kh3 Rg3+ 50.Kh4.]
46...Be5+! 47.Kh1 Rxg4 48.hxg4 Rxg4 49.d6 Rd4 50.Kg2 b2? [Also wrong is 50...Bxd6? because of 51.Rb6!. But I do not understand why Efimenko did not play 50...Rxd6! where 51.Rxd6 Bxd6 looks as a winning endgame for Black.]
51.Ra7 Rxd6 52.Rxh7+ Kg8 53.Rb7 Rf6 54.Rb3 Ra6 55.Kf3 Ra1 56.Bd3 Kf7 57.Ke4 Re1+ 58.Kd5! Bd4 [In the remaining part of the game Black did not manage to make any progress.]
59.Bh7 Kf6 60.Kc6 Ke5 61.Kb5 Kf4 62.Bg6 Rg1 63.Bh7 Rg7 64.Bc2 Rg2 65.Bb1 Rh2 66.Bg6 Ke5 67.Bb1 Rh1 68.Bc2 Re1 69.Bg6 Re2 70.Bh7 Be3 71.Bg6 Bf2 72.Bb1 Rd2 73.Ka4 Bd4 74.Kb5 Kf4 75.Bg6 Be3 76.Ka4 Rg2 [Or 76...Kf3 77.Ka3!, disallowing Black to regroup by ...Kf2, ...Bd4.]
77.Bh7 Rg7 78.Bc2 Bd4 79.Kb5 Rg1 80.Bh7 Rc1 81.Bg6 Ke5 82.Bh7 Rd1 83.Bg6 Rd2 84.Bh7 Bg1 85.Ka4 Rh2 86.Bb1 Rg2 87.Ka3 Bd4 88.Ka4 Rd2 89.Bg6 Kd6 90.Kb5 Re2 91.Bh7 Re8 92.Bg6 Rb8+ 93.Ka4 Rg8 94.Bh7 Rg7 95.Bf5 Re7 96.Kb5 Re8 97.Bg6 Rb8+ 0,5-0,5

Efimenko – Naiditsch (5), 17.08.2010
Ruy Lopez C63

[Mikhail Golubev]
1.e4 e5 2.Nf3 Nc6 3.Bb5 f5 [A surprise. In the past Naiditsch hardly ever played the Jaenisch-Schliemann Gambit with Black. Though he has excellent results with White against this system.]
4.Nc3 [Another important line, which was topical lately, is 4.d3 fxe4 5.dxe4 Nf6 6.0–0 Bc5 7.Qd3.]
4...fxe4 5.Nxe4 Nf6 6.Nxf6+ Qxf6 7.Qe2 Be7 8.Bxc6 bxc6!? [The alternative direction is 8...dxc6 9.Nxe5 Bf5.]
9.Nxe5 [A more principled move is 9.d4! where 9...exd4?! (9...Qg6 with a sharp play) 10.Bg5 Qe6 11.Qxe6 dxe6 12.Bxe7 Kxe7 13.Nxd4 is better for White.]
9...0–0 10.0–0 Qe6 11.Re1 Bc5! 12.Nf3 Qxe2 13.Rxe2 d6! [It is very hard for White to use his extra pawn.]
14.d3 [Possibly White should prefer 14.d4!? Bb6 which was tested in several games.]
14...Bg4 15.Be3 Bb6 N [After 15...Bb4!?, which was played before, White maybe can try 16.c3 (16.a3 Ba5 17.b4 Bb6 18.Bxb6 axb6 19.Re7 Bxf3 20.gxf3 Rf7 21.Rxf7 Kxf7 22.a4 c5! was OK for Black in Leko-Radjabov, Monaco 2007) 16...Ba5 17.d4!? and if 17...Bb6 18.c4, threatening with c4-c5!. Curiously, both Efimenko and Naiditsch were unaware of the Monaco game.]
16.Bxb6 cxb6!? 17.Re3 Bxf3 18.gxf3 Rf6 19.Rae1 Raf8 20.Re6 [After 20.Kg2 Rg6+ 21.Kf1 Black can play 21...Rh6 though 21...Rgf6 22.Ke2 Rh6 23.Rh1 does not look too dangerous for him either.]
20...Rxf3 21.Rxd6 Rxf2 22.Rxc6 h5! 23.Rc7 R8f4!? [Or 23...h4 where 24.Ree7 Rf1+ 25.Kg2 R8f3! 26.Rxg7+ Kh8 27.Rh7+ Kg8 28.Rxh4 R1f2+ is a draw.]
24.Re4 [Playing for a win by 24.h3 is unsafe for White: 24...h4 and Black has attacking possibilities such as ...R2f3 at some point.]
24...Rf1+ [Now the game ends as the white king cannot escape from the perpetual check.]
25.Kg2 R1f2+ 26.Kg1 Rf1+ 0,5-0,5

Naiditsch - Efimenko (6), 18.08.2010

[Mikhail Golubev]
1.e4 e5 2.Nf3 Nc6 3.Nc3 Bc5!?[Efimenko desperately needed to play for a win, so he avoided the Four Knights Defence 3...Nf6.]
4.Nxe5 Nxe5[Clearly better for White is 4...Bxf2+?! 5.Kxf2 Nxe5 6.d4.]
5.d4 Bd6 6.dxe5 Bxe5 7.Nd5[An extremely rare move. One interesting continuation is 7.Qd3!? Nf6 8.Bd2 0-0 9.0-0-0 Re8 10.f3 c6, which happened for the first time in Bologan-Romanishin, Nikolaev Zonal 1995.]
7...c6 8.Ne3[After 8.Bf4 d6! 9.Bxe5 dxe5 Black has a pleasant game.]
8...Nf6 9.Bd3[In the game L.Paulsen-Anderssen, Leipzig m 1877 occurred 9.Bc4?! 0-0 10.Qd3 Re8 11.Qb3 (11.0-0? Nxe4!) 11...d5 with Black's advantage. Of possible interest is 9.Nc4 and if 9...Nxe4 10.Qe2 but Naiditsch did not want even to think about such a sharp lines.]
9...d5 10.exd5 cxd5! 11.0-0 0-0[The white knight is misplaced on e3, so Black is somewhat better.]
12.c3[The alternative was 12.c4!?.]
12...Re8 13.Nf5 Qc7 14.h3 Ne4 15.Nd4 Qb6 16.Bc2 Bc7 17.Ne2[Instead, 17.Nb5 Qxb5 18.Ba4 can be played rather by a computer. In this line White wins an exchange but Black develops a strong initiative.]
17...Qg6!? 18.Qd3[A practical decision. White loses a pawn, but gets a position with the opposite coloured bishops and good chances for a draw.]
18...Bf5! 19.Nf4 Bxf4 20.Bxf4 Nxc3 21.Qxc3 Bxc2 22.Rac1 Rac8[An inaccuracy. After the game Naiditsch pointed that he would have had more problems after 22...Be4! with the idea of 23.f3 (?!) 23...Bf5 and then ...Re2.]
23.Rfe1! Red8 24.Bc7 Be4 25.Qg3[It seems that White could have regained the pawn and equalise by force after 25.f3! d4!? (the main point, missed by both opponents, is 25...Rd7 26.Qb3!! Rdxc7 27.Rxc7 Rxc7 28.Qxd5! =) 26.Qa3 d3 27.Rxe4 (possibly White holds also in the variation with 27.Bxd8!? d2) 27...Rxc7 (or 27...d2 28.Rd1 Rxc7 29.Rxd2 =) 28.Rxc7 Qb6+ 29.Kh1 d2 30.Rd7 d1Q+ 31.Rxd1 Rxd1+ 32.Kh2 =.]
25...Qxg3 26.Bxg3 Rxc1 27.Rxc1 d4 28.Bc7 Rc8 29.f3 Bg6[After 29...Bb1 Naiditsch planned to continue 30.a3 (if 30.Rxb1 Rxc7 31.Rd1 Rd7 - MG) 30...d3 31.Bf4 Bc2 and now, say, 32.Kf2 with good chances for a draw.]
30.Kf2 f6 31.Ke1 Kf7 32.Kd2 Ke6 33.h4[Spectators (and also Efimenko after the game) tried various options for Black in the analyses but, in short, nothing serious was found.]
33...Kd5 34.Bh2 Rxc1 35.Kxc1 Bd3 36.Kd2 Bf1 37.g4 g5[Here, for example, no progress is achieved by Black after 37...Bg2 38.Ke2 g5 (if 38...d3+ 39.Kxd3 Bxf3 40.g5) 39.hxg5 fxg5 40.Kf2 (or even 40.Bc7!? d3+ 41.Kxd3 Bxf3 42.Bd8 h6 43.Bf6 Bxg4 44.Bg7 h5 45.Bf6 Bf5+ 46.Ke3 g4 47.Kf4 =) 40...d3 41.f4.]
38.hxg5 fxg5 39.Bc7![Planning Ba5 or Bd8-f6-g7. Naiditsch gets a desired draw and wins the match by a narrow margin.]
39...h6 40.Ba5 Ke5 41.Ke1 Bc4 42.a3 Be6 43.Bb4 a6 44.Bf8 d3 45.Bxh6 Kf4 46.Kd2 Bc4 47.Kc3 Bb5 48.b4 Bc6 49.Kxd3 Bxf3 50.a4 Bxg4 51.Kd2 Bd7 52.a5 Bb5 53.Ke1 Kf5 54.Kf2 g4 0,5-0,5


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