Konstantin Aseev GM Konstantin Aseev annotates his games:

Aseev(2545) - Karpeshov(2430) ( Chigorin mem 1997)
1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.e5 Ne7 5.a3 Bxc3+ 6.bxc3 c5 7.Nf3 b6 -with the idea to change the "bad" French bishop: 8....Ba6. White prevent this move.
8.Bb5+ Bd7 9.Bd3 h6 Canning move. Usually play 9...c4 10.Bf1 with following g3 and Bh3
10.0-0 c4 11.Be2 Ba4 Black prepares Kd7 with the idea Qg8-h7 and pressing the pawn c2. This is GM A.Yusupov's plan.
12.Nh4 Nf5!? (12...Ng6!?; 12...g5?! 13.Nf3 with the idea Ne1, f2-f4 and White stands slightly better) 13.Nxf5 exf5 14.g4 Bd7 with unclear play;
12.Ne1 Kd7 13.f4 Qg8 14.Rf2 (14.g4!? with the idea f5) 14...f5 15.exf6 gxf6 16.f5 exf5 17.Bh5 Kc8 18.Nf3 Bd7 19.Nh4 Nbc6 20.Qf3 Kb7 with unclear play, Gonsales-Dimitrov, Las-Palmas,1993.
12...Kd7 13.Nh4 Qg8 14.f4 Qh7 15.f5 This move is available thanks to bishop's position e2: 15...ef5 16.Nxf5! Nxf5 17.Rxf5 Qxf5 18.Bg4 Bxc2 19.Qf3 Ke6 20.Ra2! h5 21.Bxf5 Bxf5 22.Rf2 Bg6 (22...g6 23.h3 with following g4+-) 23.Qg2!? Nc6 24.Qh3 Ke7 25.Bg5 and White has the upper hand.
15...Nbc6 16.Bg4+ (16.g4)
16.fxg6 fxg6 17.Bg4
better 17.Rf6! A) 17...Nbc6 18.Bg4 Nd8 19.Ng2!? (19.Be3? g5 20.Bxe6+ Nxe6 21.Qg4 Qg8-+; 19.Ra2!?) 19...g5 20.Ra2 (20.Ne3!? h5 21.Be2 g4 22.Ra2 with the idea Ng2) 20...h5 21.Be2+-;
B) 17...g5 18.Bg4! gxh4 19.Bxe6+ Kd8 20.Rxh6 Qg7 (20...Qxh6 21.Bxh6 Rxh6 22.Qg4+) 21.Qg4! Rh7 (21...Qxg4? 22.Rxh8++-; 21...Qf8 22.Qxh4 Rxh6 23.Bxh6+-) 22.Qxh4!? Bxc2 23.Bxd5+-
17...g5?? 18.Bxe6+ Kxe6 19.Qg4++-; 17...Nbc6 18.Rf6+
18.Nxf5 gxf5 19.Bh5 White stands slightly better
18...Nc6 19.Nf4
19.Qd2!? with the idea Bb2, Rf2, Raf1 and White stands slightly better; 19.Qe2!? with the idea Be3 and White stands slightly better
More naturally 20.Qe2 Raf8
A) 21.Rf2
A1) 21...h5 22.Bf3 h4 23.g4 Ng7 (23...Ng3 24.hxg3 hxg3 25.Rf1+-) 24.Nh3+-;
A2) 21...Ng7!?;
A3) 21...Rf7 22.Bb2 h5 23.Bf3 (23.Bh3? g5-+) 23...h4 24.g4
A3a) 24...Nxd4 25.cxd4 Rxf4 26.Bc1!? (26.c3!? with the idea Bc1 with compensation) 26...Rxd4 27.Be3 Nc6 28.Bxd4 Nxd4 29.Qd1 Nxf3+ (29...Nc6 30.Bxd5!?) 30.Qxf3;
A3b) 24...Ng3? 25.Qe3+ with the idea Nh3-g5;
B) 21.Bb2 with the idea Rae1,Bc1
B1) 21...Ng7!?
B1a) 22.Nxd5!? Nxd5 23.Qxc4 Bc6 24.Qd3 with the idea c4, d5 with compensation(24.Qa6? g5! 25.Qxa7+ Nc7-+) ;
B1b) 22.Qg2!?;
B1c) 22.h4!? with the idea 22...g5 23.Nxe6! Nxe6 24.Rf6 Rxf6 25.ef6 Nf5 26.Rf1 with attack 22...h5!? 23.Bh3 g5 24.hxg5 Bxc2;
B2) 21...h5 22.Bf3 h4 23.g4
B2a) 23...Nxd4 24.cxd4 Rxf4 25.Bc1
B2a1) 25...Rxd4? 26.Be3 Nc6 27.Qf2 Re4 28.Bxe4 dxe4 29.Bxb6!? (29.Qd2+!?+) ;
B2a2) 25...Rf7 26.Bg5 with compensation for the material ;
B2b) 23...Ng3? 24.hxg3 hxg3 25.Bc1 Qh2+ 26.Qxh2 Rxh2 27.Be3+- (27.Ng2!? Rfh8 28.Ne1+-) 27...Rxc2?? 28.Bd1
20...Raf8 21.Bh3?!
better 21.Qe2
22.Qd2 Rhf8 23.Bb2 Ng7
better 23...h5
A) 24.Ng2 g5! 25.Qxg5 Nxd4!?
A1) 26.Rxf7 Qxf7 (26...Ne2+!?) 27.cxd4?? Qf2+ 28.Kh1 Qf1+-+; A2) 26.Nf4 26...Rxf4!-+;
B) 24.Bg2
B1) 24...g5? 25.Nh3;
B2) 24...h4 25.g4 Nh6 (25...Ng3 26.Nh3!) 26.g5 Nhf5 (26...Ng4? 27.Rff1+) 27.Bh3+;
B3) 24...Ng7! 25.h4 g5 26.hxg5 h4 B3a) 27.g4 Qxc2!? (27...Ng6!?) 28.Qe3 Qb3 black has the upper hand with the idea Rxf4(28...Qh7? 29.Raf1+) ;
B3b) 27.gxh4 Qxh4 and Black has the initiative
24.Raf1 Qg8?
Black misses the suitable moment of activity 24...g5 25.Nxd5? Rxf2 26.Rxf2 Rxf2 27.Nf6+ (27.Qxf2? Nxd5 28.Qf7+ Ne7 29.Bxe6+ Kd8) 27...Rxf6 28.exf6 and Black stands slightly better
25...g5? 26.Nxe6! Nxe6 27.Bxe6+ Kxe6 28.Rf6+ Kd7 (28...Rxf6 29.exf6++-) 29.e6++-
26.Bc1 Qh7 27.Nxe6?!
better 27.Bg4!? or 27.Qe1!?
27...Kxe6 28.g4 Nxd4
28...Nh4? 29.Rf6+ Rxf6 30.exf6+ Kd7 31.Bxh6 Rf7 32.Bg5+ (32.Qe5!?)
29.cxd4 Rxf2 30.Rxf2 Rxf2 31.Qxf2 g5 32.c3?
Natural move although a serious mistake, better was 32.Qf6+ Kd7
A) 33.e6+ A1) 33...Kc6 34.Bd2 a5 A1a) 35.Qf7 Bxc2 (35...Qxf7 36.exf7 Ng6 37.Bg2 Bxc2 38.h4 Kd6 39.hxg5 hxg5 40.Bxg5) 36.Qe8+ Kb7 37.Bg2! (37.Qd7+? Ka6 38.a4 Bxa4 39.Qxa4 Qd3 black has the upper hand ) ;
A1b) 35.c3 Bd1!? with the idea Nb5-d4 36.Qf7 Qxf7 37.exf7 Ng6 38.a4!? with the idea 38...Ba4 39.Bc1 and 40.Ba3 38...Kd6 39.Bc1 Ke6 40.Bg2 Bxg4 41.h4 Kxf7 (41...gxh4 42.Bxh6 Kxf7 43.Bxd5+ Be6 44.Be4) 42.hxg5 hxg5 43.Bxd5+ (43.Bxg5 Ke6!? 44.Bd8 b5! 45.axb5 a4 46.b6 Nf8 47.b7 Nd7 48.Bg5 a3 49.Bc1 a2 50.Bb2 Kd6 51.Kf2 Be6 and Black has the upper hand with the idea Kc7-b7) 43...Be6; A2) 33...Kd6 34.Bd2 a5 35.Be1 Bxc2 36.Bg3+ Kc6 37.Qf8 (37.Qe5!?) 37...Kb5 38.Qd8 (38.Qe8+ Nc6 black has the upper hand ) ; B) 33.Bd2! 33...Qe4 (33...Qxc2?! 34.e6+; 33...Qg6 34.Bb4 Qxf6 35.exf6 Ng6 36.f7+-) 34.Bb4 B1) 34...Qxd4+? 35.Kh1 Qd1+ (35...Qe4+ 36.Bg2+-) 36.Bf1 Nc8 37.e6+; B2) 34...Qe3+ 35.Kg2 Bxc2!? (35...Qe4+ 36.Kf1!? Qh1+ 37.Kf2 Qxh2+ 38.Bg2 Qf4+ 39.Qxf4 gxf4 40.Bxe7 Kxe7 41.Bxd5+; 35...Qe2+ 36.Kh1) 36.Qxe7+ Kc6 37.Qe6+ Kb5 38.Qd7+ (38.Qxd5+?? Ka4-+) 38...Ka6 39.Qc8+=; 32.Bd2 Qf7
Black also doesn't find the best move 32...Qb1! and Black has the upper hand ; 32...Qf7!?
33.Bf1 Qxc3?!
better 33...Qd1 34.Qf6+ Kd7 35.Qd6+ Ke8 A) 36.e6? Qxg4+ (36...Nc8-+) 37.Bg2 Nc8 (37...Kf8 38.Qe5!?) 38.Qxd5 Qd1+ 39.Bf1 (39.Kf2 Qxc1 40.Qxc4 Bc2 41.Kg3 Ne7-+) 39...Qxc1 40.Qxc4 Qe3+ 41.Kh1 Qe4+-+ 42.Kg1 (42.Bg2 Qe1+ 43.Bf1 Kd8!?-+) 42...Qc6 (42...Bc6) ; B) 36.Be3 Qxg4+ 37.Bg2 with the idea Qh6,e6(if 37.Kf2 then 37...Qh4+! 38.Kg1 Bd7 Black has the upper hand )
34.Bd2 Qxa3
34...Qb2 35.Qf6+ Kd7 36.e6+ (36.Qd6+ Ke8 37.Be3) 36...Kc6 37.Bb4 Ng8 38.Qg7 with the idea 39.Qd7#
35.Qf6+ Kd7 36.Qxh6 Qb2?
Black overrate his position, it was necessary to play 36...Qf3 with counter-play
37.Be3 Bc2?
The decisive mistake. The square d7 ought to have the defence.
38.Qd6+ Ke8 39.e6+- Ba4 40.Qb8+ Nc8 41.Qxc8+ Ke7 1-0

Kobalija(2495) - Aseev(2545) (Chigorin mem)
1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bg5 e6 7. Qd2 Be7 8. O-O-O O-O 9. f4 Nxd4 10. Qxd4 a6
Rather rare move. Main discussions there are now around 10...Qa5
11. Bc4
The other ways of development don't put any problems to Black. Here are a few examples. 11.Rd3 b5 12.Bxf6 Bxf6 13.Qxd6 Bb7 14.Qxd8 Bxd8 15.a3 Ba5 16.Re3 f5 17.Bd3 Rac8 18.Nb1 Rfd8 19.Rd1 g6 20.exf5 exf5 21.g3 Kf7= Minasian-Aseev, St.-Petersburg, 1993;
11.Be2 Qa5 12.e5 (12.Bf3 h6 13.h4 Rd8 14.Qf2 Bd7 15.Kb1 Rac8 16.Rd3 Kf8 17.g4 Be8 Berelovich-Aseev, Sochi, 1993; 12.Kb1!?) 12...dxe5 13.fxe5 Nd5 14.Bxe7 Nxe7 15.Bd3 Nf5 16.Qf4 Rb8 17.Kb1?! (better 17.Ne4! Qxa2? 18.g4 Ne7 19.Nf6+!+-) 17...b5 18.Ne4 Qc7 19.g4 Ne7 20.Nd6 Bb7 Tiviakov-Aseev, St.-Petersburg, 1993
Early Black automatically played 11...b5, but if White in any case ought to take away his bishop on b3, why Black would not use this tempo for more useful pieses regrouping
12. Bb3 Rd8 13. e5
13.f5!? 13...dxe5 14. Qxe5 Qb6
Weaker 14...Rd6?! 15.Ne4 Nxe4 16.Bxe7 Qxe7 17.Qxe4+; 14...Qc6 15.Ne4 (15.f5!?) 15...Nxe4 16.Bxe7 Re8 17.Bh4!? (17.Rhe1)
15. Qe2
A) 15...Bxd8 16.f5!? Ng4 17.Qf4 Bxg5 18.Qxg5 Qe3+ (18...exf5 19.Nd5!? Qh6 20.Qxh6 Nxh6 21.Rd1 Be6 22.Nc7 Rb8 23.Nxe6 fxe6 24.Bxe6++) 19.Qxe3 Nxe3 20.fxe6 Bxe6 21.Bxe6 fxe6 22.g3;
B) 15...Qxd8!? 16.Rd1 Bd7;
15.Ne4 Nxe4 16.Bxe7 Qe3+ 17.Kb1 A) 17...Nd2+? 18.Rxd2! Qxd2 19.Bxd8 Qxd8 20.f5 exf5 21.Re1 (21.Bd5!?) ;
B) 17...Rxd1+ 18.Rxd1 Nd2+ 19.Ka1 Qxe5 20.fxe5 Nxb3+ 21.axb3 h5 22.Rd8+ Kh7 23.c4 b5 24.g3 Bb7 25.Rd7 Be4;
15...Bd7 16.f5 Qc5!
An important resource, which allows Black to keep the position
17.Bxf6 Bxf6 18.fxe6
In case of sacrificing the rook for the bishop 18.Rxd7 Rxd7 19.fxe6 Re7 20.Ne4 Qe5 21.Nxf6+ Qxf6 22.exf7+ White hardly has to count on the advantage
18...Bxe6 19.Bxe6 Bxc3 1/2-1/2