[Event "Pirc 4.Bf4 repertoire"]
[Site "?"]
[Date "2018.01.01"]
[Round "?"]
[White "4.Bf4"]
[Black "4...Bg7 + 5...c6"]
[Result "*"]
[EventDate "2018.01.01"]
1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.Bf4 c6
( 4...Bg7 5.Qd2 c6
( 5...O-O 6.O-O-O {This seems most appealing to me. As FM Vigus points out in the Pirc in Black and White - Black is prevented from striking back with e5 or c5. This was a comment about the same position with the bishop on e3 although it applies and as can be seen there are lots of transpositions; especially the recommended way of playing below.} 6...c6
( 6...Nc6 {I will cover under 4...Nc6.} )
( 6...a6 7.Bh6 {Transposes to 5...a6} )
( 6...Nbd7 7.e5!? Nh5
( 7...Ne8 8.Nf3 c5 9.dxc5 Nxc5 10.Bh6 Bg4 11.Bxg7 Nxg7 12.Qf4! {(＋/ - ) With good pressure for white.} )
8.Bh6 Nb6
( 8...dxe5 9.dxe5 Nxe5!? 10.Qxd8 Bxh6+ 11.Kb1 Rxd8 12.Rxd8+ Kg7 13.h3 {(＋/ - ) Black does not have enough compensation.} )
9.Bxg7 Nxg7 10.Bd3 Bf5 11.Bxf5 Nxf5 12.g4 Ng7 13.Qh6 Qd7 14.f3 f6 15.h4 {(＋/ = ) White is better because of his extra space.} )
7.Bh6
( 7.f3 {May be simpler even. A point is that:} 7...h5!? 8.Kb1 {Seems quite nice for white. There are good chances to disrupt the important f6 knight with e5. Also Qa5 is out of the question due to Nd5 ideas.} 8...b5 9.e5 dxe5 10.dxe5 Qxd2 11.Bxd2 Ne8 12.f4 {(＋/ = ) White is better.} )
( 7.Kb1 b5 8.f3 {Is also possible but gives black more options and it's not obvious Kb1 is more useful than others.} )
7...b5 {Recommended in Dangerous Weapons: the Pirc and Modern (2009). Probably for good reason since alternatives look problematic.}
( 7...Qa5 {Does not work so well after white's early Bh6.} 8.h4! Bxh6 9.Qxh6 Ng4
( 9...b5 10.h5 Ng4 11.Qd2 {(＋/ - ) Black does not have enough compensation.} )
10.Qd2 c5 11.dxc5
( 11.f3 cxd4 12.Nd5!? Qxd2+ 13.Rxd2 Ne3 14.Nxe7+ Kg7 15.Ne2 Be6 16.Nxd4 Re8 17.Nd5 Bxd5 18.exd5 {(＋/ = ) Black is a pawn down for not much. Technically this should be good for white.} )
11...Qxc5 12.Nh3 Be6 13.h5 {(＋/ = ) With a good amount of positional pressure for white.} )
( 7...Bxh6 8.Qxh6 b5
( 8...Qa5 9.h4 {Transposes to 7...Qa5.} )
( 8...Ng4 9.Qd2
( 9.Qh4!? )
( 9.Qf4!? )
9...b5
( 9...Qa5 10.Nf3 Nd7 11.h3 Ngf6 12.Qh6 {(＋/ - ) Black has problems positionally.} )
10.h4 b4 11.Nb1 Nf6 12.h5! Nxe4 13.Qh6 g5 14.Bd3 f5 15.Bxe4 fxe4 16.Qxg5+ Kh8 17.Nd2 {(＋/ - ) Black has an unenviable position.} )
9.e5!?
( 9.f3 b4 10.Nb1 {Transposes to 7...b5.} )
9...dxe5 {Black can't afford having his pieces driven back so this becomes pretty forcing.} 10.dxe5 Ng4 11.Qh4! Qc7
( 11...Qb6 12.Ne4 Qc7 13.Nf3 Na6 14.e6 Bxe6 15.Nfg5 h5 16.h3 Nf6 17.Nxe6 fxe6 18.Ng5 Qa5 19.Kb1 Rad8 20.Be2 {(＋/ = ) With good positional compensation.} )
12.Nf3 Nxe5 13.Be2 Nxf3
( 13...Na6 14.Nxe5 Qxe5 15.Rhe1 Qc7 16.Bf3 Be6 17.Qh6 Rad8 18.Re4 Bf5 19.Rh4 g5 20.Qxg5+ Bg6 21.Rhd4 Rxd4 22.Rxd4 b4 23.Ne4 {(＋/ = ) White has better centralisation and less weaknesses.} )
( 13...Ng4 14.Ne4 f6
( 14...Na6 15.Rhe1 f6
( 15...Kg7 16.Nd4 c5 17.Nb3 Bf5 18.Bxg4 Qf4+ 19.Nbd2 g5 20.Qxg5+ Qxg5 21.Nxg5 Bxg4 22.f3 Bf5 {(＋/ - ) With weaknesses for black.} )
16.h3 Ne5 17.Nxe5 Qxe5 18.Nc3 Qc5 19.a4 g5 20.Qd4 e5 21.Qd6 {(＋/ = ) Black keeps a lot of weaknesses, extra pawn or not.} )
( 14...f5 15.Nc5
( 15.h3 Nf6 16.Nxf6+ exf6 17.Rhe1 a6 18.Nd4 Ra7 19.Bf3 {(＋/ = ) White should have fairly good compensation.} )
( 15.Neg5!? h6 16.h3 hxg5 17.Qxg5 Ne5 18.h4 Nbd7 19.h5 Rf6 20.hxg6 Nxg6 21.g3 Nf8 22.Rh6 Kg7 {(∞) White should have ok compensation.} )
15...Nf6 16.Rhe1 Na6 17.Nxa6 Bxa6 18.Nd4 Bc8 19.Bf3 e5 20.Nxb5 cxb5 21.Bxa8 Be6 22.g4! Nxg4?! 23.Bd5 Bxd5 24.Rxd5 Qa5 25.f3 Qxa2 26.Rd3 Qa1+ 27.Kd2 Qa5+ 28.Rc3 {(＋/ - ) Black does not appear to have anything.} )
15.h3!? Ne5 16.Nxe5 Qxe5 17.Rhe1 Qc7 18.Nc3 a6 19.f4 {(＋/ = ) Since black has weakened his kingside and white is well placed with his pieces I think this will be good compensation.} )
( 13...a5 14.Ng5 h5 15.Qg3 f6 16.Nf3 Kh7 17.Rhe1 Ra7 18.Nh4 g5 19.Bxh5 Rg8 20.Nf3 {(＋/ = ) With some advantage for white in a slightly strange position.} )
14.Bxf3 Be6
( 14...Na6 15.Rhe1 Be6 16.Qh6 {(＋/ - )} )
15.Rhe1 Na6
( 15...Nd7 16.Qxe7 Qf4+ 17.Rd2 Nb6 18.Re4 Qxh2 19.Rh4 Qe5 20.Bxc6 {(＋/ - ) White is a lot more active.} )
16.Qh6 Rad8 17.Re4 Bf5 18.Rh4 g5 19.Qxg5+ Bg6 20.Re1 {(＋/ = ) White should be somewhat better.} )
8.f3 b4
( 8...Qa5 {The DW: Pirc and the Modern recommendation from 2009.} 9.h4
( 9.Kb1?! Bxh6 10.Qxh6 Be6 11.e5 dxe5 12.dxe5 b4 13.exf6 exf6 14.Nge2 bxc3 15.Nxc3 Nd7 {(=) Black is OK.} )
( 9.Bxg7?! Kxg7 10.e5 dxe5 11.dxe5 Ng8 {Neither side is greatly placed. Black should be about OK.} )
9...b4
( 9...Be6 10.h5 b4
( 10...Nbd7 11.Bxg7 Kxg7 12.hxg6 fxg6 13.Qg5 Ng8 14.f4 {(＋/ - ) Should be a serious initiative.} )
11.Nb1 Nbd7 12.Bxg7 Kxg7 13.a3!? {Maybe a bit simpler compared to 13.hxg6 in DW: Pirc Modern. Basically I am not really impressed by black's position and think white can play calmly.} 13...Rab8 14.hxg6 fxg6 15.b3 {(＋/ = ) White should be able to absorb active attempts by black. If he can play a long middlegame it looks to me like black will have more weaknesses to worry about.} )
( 9...Bxh6 10.Qxh6 b4 11.Nb1 Ba6 12.Nh3!? Bxf1 13.Rdxf1 Qh5 14.Qd2 Nbd7
( 14...Qa5 15.h5 Nxh5 16.Qh6 f6 17.f4 Rf7 18.f5 {(＋/ - ) With great pressure for the pawn.} )
15.e5 dxe5 16.g4 Qxh4 17.Rfg1 h6 18.dxe5 Nxe5 19.Nf2 Nxf3 20.Rxh4 Nxd2 21.Nxd2 {(＋/ - ) There is not enough compensation.} )
( 9...Nbd7 10.h5 b4 11.Nb1 {(＋/ = ) As given by Vigus 2009 is a decent initiative for white.} )
10.Nb1 Ba6 {It makes sense on a positional level to exchange the bishops like this and it is the mainline in DW: Pirc Modern. White can try the following move though and with it I think a fairly easy advantage can be reached.}
( 10...Qxa2 {Is not an altogether so very important pawn. With active play white should be better.} 11.h5 Nbd7 12.g4 a5
( 12...Nb6 13.Bxg7 Kxg7 14.Qxb4 Nfd7 15.hxg6 fxg6 16.e5 Rb8 17.b3 Kg8 18.Bd3 Ba6 19.Nc3 Qa1+ 20.Kd2 c5 21.Rxa1 cxb4 22.Rxa6 bxc3+ 23.Kxc3 dxe5 24.Rxa7 Rbc8+ 25.Kb2 exd4 26.Be4 {(＋/ - ) White is seriously better.} )
13.Bxg7 Kxg7 14.hxg6 fxg6 15.Qh6+ Kg8
( 15...Kf7 16.g5 Ng8 17.Qxh7+ Ke8 18.Qxg6+ Kd8 19.d5 {(＋/ - ) With an extra pawn and decent initiative.} )
16.g5 a4
( 16...Nh5 17.Rxh5 Rf7 18.Rh2 a4
( 18...Nb6 19.Bd3 Ba6
( 19...Na4 20.Ne2 Qxb2+ 21.Kd2 {(＋/ - )} )
20.Ne2 Bxd3 21.cxd3 e5 22.Rdh1 Rc7 23.Ng3 a4 24.Nh5 gxh5 25.Qxd6 {(＋/ - )} )
19.c3 c5 20.Rc2 cxd4 21.cxd4 Nb6 22.Qh4 {(＋/ - ) White should be able to make use of his extra piece.} )
17.gxf6 Nxf6 18.e5 Nh5 19.Bd3 Qf7 20.Ne2 Bf5 21.Bxf5 Qxf5 22.Rdg1 Kh8 23.Ng3 Qf4+ 24.Qxf4 Nxf4 25.Nd2 {(＋/ - ) Black does not have full compensation.} )
( 10...Nh5 11.Ne2 Ba6 12.Bxg7 Nxg7 13.a3 Nd7 14.axb4 {(＋/ - )} )
( 10...Be6 11.h5 {Transposes to 9...Be6} )
( 10...Bxh6 11.Qxh6 Rd8? {DW: Pirc Modern p.21 This was briefly mentioned in DW: Pirc Modern but seems way to risky.}
( 11...Ba6 {Transposes to 9...Bxh6} )
12.h5 Qxa2 13.g4 {(＋/ - ) Black will get crushed on the kingside.} )
11.Bxg7
( 11.Nh3?! Bxf1 12.Rdxf1 Qxa2 {(∞) White does not appear to have anything great even if he has his pieces positioned quite well.} )
11...Kxg7 12.h5 Bxf1 13.Rxf1 Nbd7 14.hxg6 fxg6 15.Nh3! {Not exactly caring about black's play and just getting an important piece in play. 15.Qh6+ is covered in DW: Pirc Modern and also looks good.} 15...Qxa2
( 15...Kg8 16.Re1! e5
( 16...Rfe8 17.Ng5 e5 18.dxe5 Nxe5 19.f4 Nf7 20.Nxf7 Kxf7 21.Qd3 {(＋/ - ) White is better but will need to keep up a good level of play for this to become apparent.} )
( 16...Qxa2 17.e5 dxe5 18.dxe5 Nd5 19.Qh6 Rfd8 20.Nf4 Nf8 21.Nxg6 Nc3 22.Nxe7+ Kf7 23.Qf6+ Ke8 24.Qxc6+ Kxe7 25.bxc3 {(＋ - ) White will win technically.} )
17.dxe5 dxe5
( 17...Nxe5 18.Qxd6 Nh5 19.a3 Rab8 20.Rd1 {(＋/ - ) White is seriously better.} )
18.Rd1 {(＋/ - ) White is very much for choice.} )
( 15...c5 16.Ng5 Qxa2 17.Nxh7 Nxh7
( 17...Rg8 18.Nxf6 exf6 19.dxc5 Nxc5 20.Qxd6 Rgc8 21.Qe7+ Kg8 22.Kd2! Qxb2 23.Ke3 Qe5 24.Qh7+ Kf8 25.Qxg6 Qg5+ 26.Qxg5 fxg5 27.Rd1 {(＋/ - ) White should win without many problems.} )
18.Qh6+ Kf7 19.Qxh7+ Ke8 20.Qxg6+ Qf7 21.Qxf7+ Kxf7 22.dxc5 Nxc5 23.Nd2 {(＋/ - )} )
16.Ng5 Kg8 17.Re1
( 17.Rh6!? )
17...Nb6
( 17...e5? 18.Rh6 a5 19.Reh1 a4 20.Nxh7! a3 21.Nxf6+ Nxf6 22.Qg5 Qxb2+ 23.Kd2 Qxd4+ 24.Kc1 Qb2+ 25.Kd1 Qxb1+ 26.Kd2 Nxe4+ 27.fxe4 Rf2+ 28.Ke3 Re2+ 29.Kxe2 Qxc2+ 30.Ke3 Qc5+ 31.Kf3 Rf8+ 32.Kg4 Rf4+ 33.Kh3 Qe3+ 34.g3 Qxe4 35.Qd8+ Rf8 36.Rh8+ Kxh8 37.Qxf8+ Kh7 38.Rf1 Qf5+ 39.Rxf5 gxf5 40.Qxf5+ {(＋ - ) White wins.} )
18.b3
( 18.Qxb4?! c5 19.Qa3 Qxa3 20.Nxa3 cxd4 {(=) Black seems OK.} )
18...a5 19.e5 dxe5
( 19...a4 20.exf6 axb3 21.fxe7 b2+ 22.Kd1 Rfe8 23.Qxb4 Qxb1+ 24.Kd2 Qa2 25.Qxb6 {(＋ - )} )
20.Qd3 e4
( 20...a4 21.Rxh7! e4 22.Rxe4 Nxh7 23.Re6 Rf7 24.Rxg6+ Kf8 25.Ne6+ Ke8 26.Rg8+ Nf8 27.Qg6 {(＋ - )} )
21.Rxe4 Nbd5 22.Reh4 Rf7 23.Nxf7 Kxf7 24.Rxh7+ Ke6 25.Qxg6 {(＋/ - ) White is better in a strange position.} )
( 8...Be6 9.Bxg7 Kxg7 10.d5 Bd7
( 10...cxd5 11.exd5 Bd7 12.Nxb5 {(＋/ = ) Insufficient compensation.} )
11.dxc6 b4
( 11...Nxc6 12.Bxb5 Rb8 13.Bxc6 Bxc6 14.Nge2 {(＋/ - ) The extra pawn is probably good enough for some advantage.} )
( 11...Bxc6 12.e5 Ne8 13.h4 {(＋/ - ) White can create something on the kingside.} )
12.cxd7 bxc3 13.Qxc3 Nxd7 14.g4 Kg8 15.h4 Qb6 16.Qd4 Qc6 17.Rh2 Ne5 18.h5 g5 19.h6 {(＋/ = )} )
9.Nb1
( 9.Nce2 {May be even stronger. } )
9...Bxh6
( 9...Ba6 10.Bxg7 Kxg7 11.Qxb4 {(＋/ = )} )
( 9...Nbd7 10.h4 e5 11.Bxg7 Kxg7 12.dxe5 Nxe5 13.Qxb4 d5 14.Nc3 Be6 15.Nge2 {(＋/ - )} )
( 9...Qb6 10.h4 Nh5 11.Rh2 f5 12.Bc4+ d5 13.exd5 {(＋/ - )} )
( 9...Qa5 10.h4 {Transposes to 8...Qa5.} )
10.Qxh6 {There now appears to be two moves that might give some hope. Both are not very active attempts. Basically there seems to exist a need to diminsh a future white initiative so being a bit coy at this point is not obviously a bad strategy.} 10...Qc7
( 10...Qa5 11.h4 {Transposes to 8...Qa5.} )
( 10...Kh8!? 11.h4 Rg8 12.g4 {(＋/ = ) White should be a little better thanks to his space advantage. Play is very non-forcing so providing a clear projection of what play might look like seems hard.} )
11.h4 c5 12.Ne2
( 12.d5 c4! {(∞)} )
12...cxd4
( 12...e5 13.dxe5 dxe5 14.h5 Qe7 15.Nd2 {(＋/ - ) Has to be quite pleasant for white.} )
13.Nxd4 Nc6
( 13...Nbd7 14.h5 Ne5 {Transposes.} )
14.h5 Ne5
( 14...Nxd4 15.Rxd4 Nxh5 16.g4 Nf6 17.Rd2!? Qb6 18.e5 dxe5 19.g5 Nh5 20.Bd3 Bb7 21.Rxh5 Qg1+ 22.Rd1 Qxd1+ 23.Kxd1 Bxf3+ 24.Be2 Bxh5 25.Bxh5 gxh5 26.Qxh5 {(＋ - )} )
15.g4
( 15.Nd2?! {Remarkably this does not seem to be a position where white can afford one generally sensible slow move. There is a degree of resilience in black's position but he still neds to follow up precisely.} 15...a5! 16.g4 a4 17.hxg6 fxg6 18.g5 Nh5 19.Rxh5 gxh5 20.Bc4+ Nxc4 21.Nb5 Qb7 22.Nxc4 b3 23.g6 e5 24.Nbxd6 Qg7 25.gxh7+ Kh8 26.Nf7+ Qxf7 27.Nxe5 Qf4+ 28.Qxf4 Rxf4 29.Ng6+ Kxh7 30.Nxf4 bxa2 {(∞) Black has two dangerous passers which collude to give him counterchances.} )
15...Bd7
( 15...a5 16.Bh3! e6
( 16...g5 17.Qxg5+ Kh8 18.Qe3 Rg8 19.Bf1 Qc5 20.Be2 Be6 21.Nf5 Qxe3+ 22.Nxe3 Rac8 23.Nd2 d5 24.exd5 Nxd5 25.Nxd5 Bxd5 26.Rhg1 {(＋/ - ) White is not terribly active but should be able to make use of the extra pawn eventually.} )
( 16...Nc6 17.g5 Nxh5 18.Bg4 Nxd4 19.Rxd4 e5 20.Rdd1 f5 21.Bxh5 gxh5 22.g6 Qg7 23.gxh7+ Kh8 24.Qxh5 Qf7 25.Qxf7 Rxf7 26.Rxd6 {(＋ - ) White will win.} )
17.Qg5
( 17.hxg6?! fxg6 18.g5 Nh5 19.Bxe6+ Rf7! 20.Bd5 Bb7 21.Bxb7 Qxb7 22.Rxh5 gxh5 23.Nf5 Qc6 {(∞) White fully lacks coordination.} )
17...Qd8 18.Qh4 gxh5 19.gxh5 Kh8 20.f4 Ned7 21.Bxe6 fxe6 22.Nxe6 Qe8 23.Nxf8 Qxf8 24.Rhe1 {(＋/ = ) White seems better even if the position has not been totally resolved.} )
16.Nd2 {Black played slowly on his last move so this now appears reasonable.}
( 16.Bh3?! Kh8! {(∞) It's a bit hard to account for but white reaches a bit of an impasse after this calm but useful move.} )
16...Kh8 17.Bb5
( 17.Kb1 {I am not sure this king move is necessary. Potentially it is clever to play though.} 17...a5
( 17...Rg8 18.hxg6 fxg6 19.Bb5 {Transposes to 19.Kb1} )
18.hxg6 fxg6 19.Bc4
( 19.g5 Nh5 20.Rxh5 gxh5 21.Bc4 Qd8! 22.Bd5 Rc8! 23.Ne6 Bxe6 24.Bxe6 Qc7 25.Bxc8 Rxc8 26.Rc1 Ng6! 27.Qxh5 a4! {(∞) With counter chances} )
( 19.Nc4 Rf7 20.b3
( 20.Nxe5 dxe5 21.Ne2 {(=) With a position but no advantage for white.}
( 21.Nb5 Qc5 {(∞)} )
( 21.Qh2 Rc8 {(∞)} )
)
20...Rg7 21.Qe3 Qa7
( 21...Rc8 22.g5 Nh5 23.f4 Nxc4 24.Bxc4 e5 25.f5 d5 26.f6 dxc4 27.fxg7+ Nxg7 28.Nf3 {(＋/ = ) I don't think black has full compensation.} )
22.g5 Nh5 23.Nxe5 dxe5 24.Nf5 gxf5 25.Qxa7 Rxa7 26.Rxh5 fxe4 27.fxe4 Rg8 28.Be2 Be8 29.g6 Rxg6 {(=) to (＋/ = ) Black has a few weaknesses but the position is so simplified it should quite manageable.} )
19...Nxc4 20.g5 Nh5 21.Rxh5 Rf7 22.Qxg6 Rg7 23.Ne6 Nxd2+ 24.Rxd2 Rxg6 25.Nxc7 Rag8 26.Rd5 Rc8 27.Na6 Ra8 28.Nc7 Rc8 29.Na6 Ra8 30.Nc7 Rc8 {(=)} )
17...Rg8
( 17...a5 18.hxg6 fxg6 19.Nc4 Nxc4 20.g5 Rf7 21.gxf6 Bxb5 22.Nxb5 Qc5 23.Rd5 Qe3+ 24.Qxe3 Nxe3 25.Rd3 Nc4 26.Rd4 Rc8
( 26...Ne5 27.fxe7 Rxe7 28.f4 Nf7 {(＋/ - ) With an endgame where white is active and has weaknesses to target.} )
27.fxe7 Rxe7 28.Nxd6 Nxd6 29.Rxd6 {(＋/ - ) With an extra pawn and chances to press.} )
18.hxg6 fxg6 19.Kb1 {Maybe not strictly necessary and instead 19.Bxd7 followed by Nf1-Ne3 looks reasonable.} 19...a5 20.Bxd7 Qxd7 21.Nf1 a4!
( 21...Raf8 22.Ne3 Rf7 23.Nd5 Nc4 24.Nf4 e5 25.Nxg6+ Rxg6 26.Qxg6 exd4 27.g5 Ne8 28.Qh5 Ne5 29.Rxd4 Rxf3 30.Rd5 Qf7 31.Qxf7 Rxf7 32.Rxa5 Kg7 33.Rb5 Kg6 34.Rxb4 Kxg5 35.Rg1+ Kf4 36.Rf1+ Nf3 37.a4 {(＋/ - ) White should have chances because of his passed pawns.} )
( 21...Rg7 22.Ne3 Rb8 23.Nd5 {(＋/ - ) White seems better placed generally.} )
22.Ne3 a3
( 22...b3 23.cxb3 axb3 24.a3 Rg7 25.Nd5 {(＋/ - ) Changes to little.} )
23.b3 e6 24.Ng2!?
( 24.f4 {Looks clever at first but it will need to be followed up by more agression when there may be simpler ways to play.} 24...Nf7
( 24...Nxe4 25.Rc1 Nd2+ 26.Ka1 Nef3 27.Nxe6 Ra7 28.f5 {(＋/ - ) The position is a bit strange but white's pieces are accomplishing more.} )
25.Qh2 Rg7 26.Qg2 Re8! 27.g5
( 27.e5!? dxe5 28.Ndf5 Qxd1+ {(∞) to (＋/ - ) Have fun analysing this if you are so inclined. I don't even know how to take back.} )
27...Nh5 28.Ne2
( 28.Qd2 Ng3
( 28...e5 29.Ndf5 gxf5 30.Rxh5 exf4 31.Nxf5 Nxg5 32.Qxb4 Nxe4 33.Qd4 Qa7 34.Qxg7+ Qxg7 35.Nxg7 Kxg7 {(=) to (＋/ = ) Probably black is OK.} )
29.Ng4 Nxh1 30.Nf6 Qc8 31.Rxh1 Re7 32.Qxb4 e5 33.Ne2 exf4 34.Nxf4 Nxg5 35.Qxd6 Ref7 36.N4d5 {(∞) to (＋/ = ) This is hard to asses. } )
28...Qd8 29.Rdf1 {(＋/ = ) to (=) White at least keeps some control. His pawn formation, even if supported well for the moment, is always going to be disruptable with e5 though and this I somewhat dislike.} )
( 24.Qh2 {Is also interesting. I like moving the knight better though, because the queen will get involved ayway.} )
24...Rg7 25.Qe3!? {(＋/ = ) White seems to keep control. Black does have weaknesses and there there is quite literally lots of room to manouvre as the game goes on.} )
( 5...a6 6.Bh6 O-O 7.O-O-O b5 8.f3 {(＋/ = )} )
6.Bh6 Bxh6 )
( 4...Nbd7 5.Nf3 Bg7
( 5...Nh5?! 6.Bg5! {This seems easiest. If h6 then Be3 and h6 will be quite weakening; otherwise the bishop is just well placed on g5.} 6...Bg7 7.Be2 c5 8.Qd2 O-O 9.O-O-O {(＋/ - ) Black has a choice of middlegame poison. In other words he is behind.} )
( 5...c6 6.Qd2 {Transposes to 4...c6.} )
( 5...a6 6.e5 Nh5 7.Bg5 {(＋/ - )} )
6.Qd2 O-O
( 6...c5 7.Bh6
( 7.dxc5 Nxc5 8.e5 Nfe4 9.Nxe4 Nxe4 10.Qb4 dxe5 11.Nxe5 Nd6 12.Bb5+ Kf8 13.O-O-O {(＋/ - )} )
7...Bxh6
( 7...cxd4 8.Nxd4 O-O 9.Bxg7 Kxg7 10.f3 {(＋/ = )} )
8.Qxh6 cxd4
( 8...a6 9.O-O-O cxd4 10.Rxd4 b5 11.Be2 Qa5 12.Kb1 Bb7 13.Rhd1 {(＋/ = ) Nd5 is coming and then I don't think black can hope for much.} )
9.Nxd4 Ne5 10.O-O-O Bd7 11.Be2 Qb6 12.Rhe1 O-O-O 13.f4 Neg4 14.Bxg4 Bxg4 15.Rd3 {(＋/ = ) White's pieces are better.} )
( 6...c6 7.Bh6 {Transposes to 4...c6 with 5...Nbd7.} )
7.O-O-O {This prevents e7-e5, encouraging black to playing with c7-c5. Or doing something different.} 7...Nb6!?
( 7...c5 8.Bh6 cxd4 9.Nxd4 {(＋/ = ) I don't see why this should be a workable Sicilian dragon for black. White will speedily go h4-h5 and can probably save time by ommiting f3.} )
8.Kb1 c6
( 8...Bg4 9.Be2 c6 10.h3 Be6 {(＋/ = ) Black has not set up in a fully sensible way. He lacks possibilities for own play.} )
9.Be2 Be6 10.h4 {(＋/ = ) White is a lot more harmoniously placed.} )
( 4...Nc6 5.Qd2 Bg7
( 5...e5 6.dxe5 Nxe5 7.O-O-O Be6 8.Nge2 Bg7 9.Nd4 a6 10.Nxe6 fxe6 11.Bxe5 dxe5 12.Qe3 {(＋/ = ) White is somewhat better and I'm sure there are.} )
( 5...Nxd4? 6.Qxd4 e5 7.Bxe5 dxe5 8.Qxe5+ Be6 9.Bc4 Bd6 10.Qd4 c5 11.Qd3 {(＋/ - )} )
( 5...a6 6.O-O-O b5 7.f3 e6 8.Kb1 {(＋/ = ) Black's c6 knight looks slightly weird.} )
6.O-O-O a6 7.Bh6 O-O 8.h4 Bxh6 9.Qxh6 e5 10.d5 Nd4 11.h5 {(＋/ = )} )
( 4...a6 5.e5 Nh5 6.Be3 dxe5 7.dxe5 Qxd1+
( 7...Nc6 8.Qxd8+ Nxd8 9.Nd5 Ne6 10.g4 Nhg7 11.Bg2 h5 12.h3 {(＋/ - )} )
8.Rxd1 Be6 9.Nd5 Bxd5 10.Rxd5 Nd7 11.f4 {(＋/ = )} )
5.Qd2 {I imagined trying to do something else as a fifth move. It appears to me that this is most challenging though; essentially it works against black's most natural move Bg7.} 5...Qa5
( 5...Nbd7 {This is a definite way to play. In terms of alternatives Qa5 seems toughest, b5 is somewhat loosening and Bg7 just transposes elsewhere.} 6.Nf3 Bg7
( 6...b5 7.e5 b4 8.Na4 Nh5 9.Be3 Qa5 10.b3 dxe5 11.Bc4 {(＋/ = ) With good compensation in a non-forcing position.} )
( 6...Qa5 7.a3!? Bg7
( 7...e5 8.Bh6 Bxh6 9.Qxh6 exd4 10.Nxd4 Qh5 11.Qd2!? O-O 12.Be2 Qe5 13.f3 {(＋/ = ) White is at least a little bit more comfortable.} )
( 7...b5?! 8.e5 Nh5 9.Be3 dxe5 10.dxe5 Ng7 11.Nd4 Bb7 12.O-O-O O-O-O 13.f4 {(＋/ - ) Black's position doen't really make that much sense.} )
8.Be2 c5
( 8...O-O 9.Bh6 b5 10.Bxg7
( 10.O-O Qc7 11.Rfd1 a5 12.Bxg7 Kxg7 13.Qe3 {(＋/ = )} )
10...Kxg7 11.e5 dxe5 12.dxe5 Nxe5 13.Nxe5 b4 14.Nxc6 bxc3 15.Nxa5 cxd2+ 16.Kxd2 {(＋/ - ) This should be very nice for white with some technique.} )
( 8...e5 9.Bh6 O-O 10.Bxg7!? Kxg7 11.O-O-O {(＋/ = ) White is very comfortable.} )
9.Be3 Qc7 10.dxc5 Nxc5 11.e5 Nfe4 12.Nxe4 Nxe4 13.Qb4 f5 14.exf6 Nxf6 15.Qb3 d5 16.O-O {(＋/ = ) to (＋/ - ) White looks to have the clear better of it in this IQP position.} )
7.Bh6 {It looks like white should go for this.}
( 7.e5 Nh5 8.Bh6 dxe5 9.Bxg7 Nxg7 10.dxe5 Nc5 11.Qxd8+ Kxd8 {(=) Should not exactly be better for white.} )
7...O-O
( 7...Bxh6 8.Qxh6 {Transposes to 4...Bg7.} )
8.e5!?
( 8.Bxg7!? {Is also very interesting. It should transpose to 8.e5 dxe5 but with different side-variations possible.} )
( 8.Be2 e5 9.Bxg7 Kxg7 10.O-O-O Qe7 11.h4 Re8 {Looks about ok for black.} )
( 8.h4!? Bxh6 9.Qxh6 Ng4 10.Qd2 Ndf6 11.O-O-O {Could be something since black is not incredibly naturally placed in all sectors.} )
( 8.O-O-O Qa5 {Is also reasonable but I see no obviously promising way forward.} )
8...dxe5
( 8...Bxh6 9.Qxh6 dxe5 10.O-O-O! {White sacrifices and plays for long term attacking chances.} 10...Ng4
( 10...Qb6 11.Ng5 exd4 12.Nce4 Re8 13.Bc4 e6 14.h4 {(＋- )} )
( 10...Qc7 11.Ng5 b5 12.d5! Nc5 13.Bxb5! Bf5 14.dxc6 Rfd8 15.f3 Ne6 16.h4 Nd4 17.Bc4 {(＋- )} )
( 10...exd4 11.Rxd4 e5 12.Rh4 Re8 13.Ng5 Nf8 14.Bc4 Be6 15.Bxe6 fxe6 16.Re1 Qe7 17.Rxe5 Rad8 18.Re1 {(＋/ = )} )
11.Qh4 exd4 12.Rxd4 h5 13.Bc4!?
( 13.Bd3!? )
13...Ngf6
( 13...Nh6 14.Qg3 Kh8 15.h3! Nf5
( 15...e6 16.Rhd1 Nf5 17.Qf4 Kg7 18.Rxd7 Bxd7 19.g4 hxg4 20.hxg4 Nh4 21.Ne5 {(＋- ) White will win.} )
( 15...Kg7 16.Nh4 e6 17.Bd3 Nf5 18.Bxf5 exf5 19.Nxf5+ Kh7 20.Rhd1 {(＋- ) White is dominating.} )
16.Qf4 Kg7 17.Rdd1 b5 18.Bb3 h4 19.g4 hxg3 20.fxg3 Qb6 21.Rhe1 Qb8 22.Qxb8 Rxb8 23.g4 Nh6 24.Nd4 b4 25.Na4 c5 26.Nc6 Rb7 27.Nxe7 Rc7 28.Nd5 Rc6 29.Bc4 Nb6 30.Bb5 Re6 31.Naxb6 axb6 32.Rxe6 Bxe6 33.Nxb6 {(＋/ - )} )
( 13...e6 14.Rxg4 hxg4 15.Ng5 Nf6 16.Qh6 Qd6 17.g3 Rd8 18.Nce4 Qe5 19.h3 Rd7 20.hxg4 Nxe4 21.Nxe4 b5 22.g5 Qg7 23.Nf6+ Kf8 24.Qxg7+ Kxg7 25.Rh7+ Kf8 26.Nxd7+ Ke7 27.Ne5 bxc4 28.Rxf7+ Kd6 29.Nxc4+ {(＋- )} )
( 13...b5 14.Rxg4 hxg4 15.Qh6 Nf6 16.Qxg6+ Kh8 17.Qh6+ Kg8 18.Qg5+ Kh8 19.Bd3 Qd6 20.h3 g3 21.Qh6+ Kg8 22.Kb1! b4 23.Ng5 Qxd3 24.cxd3 bxc3 25.Ne4 Nxe4 26.dxe4 gxf2 27.Qg5+ Kh7 28.Qh4+ Kg7 29.Qg3+ Kh7 30.Qxf2 cxb2 {(＋- )} )
( 13...Qa5 14.Rxg4 hxg4 15.Ng5 Nf6 16.Nce4 Nh5 17.Nxf7 Qc7 18.Ne5+ Kg7 19.Nxg6 {(＋- ) White will win with accurate play.} )
( 13...e5 14.Rxg4 hxg4 15.Ng5 Nf6 16.Rd1 Qe7 17.Qh6 Bf5 18.f3 Rad8 19.Rxd8 Rxd8 20.fxg4 Bxg4 21.Bxf7+ Qxf7 22.Nxf7 Kxf7 23.Qe3 {(＋- ) White will win with accurate play.} )
14.Qg5 Kg7
( 14...e6 15.Bxe6 fxe6 16.Qxg6+ Kh8 17.Qh6+ Kg8
( 17...Nh7 18.Ne4 Qe7 19.Nfg5 Rf5 20.h4 e5 21.Rd2 Nf8 22.Nd6 Kg8 23.Nxf5 Bxf5 {(＋/ - )} )
18.g4 Qe7 19.Rg1 Qh7 20.gxh5+ Kh8 21.Qe3 Rg8 22.Rxg8+ Qxg8 23.Ng5 c5 24.Rd6 b5 25.Rxe6 {(＋/ - )} )
15.Ne2!? e5 16.Nxe5 Nd5 17.Qxd8!? Rxd8 18.Nxd7 Rxd7 19.Bxd5 Rxd5 20.Rxd5 cxd5 21.Nd4 Bd7 22.Re1 {(＋/ = )} )
9.Bxg7 Kxg7 10.dxe5 Ng4
( 10...Nd5 11.O-O-O N7b6 12.Ne4 Bf5 13.Ng3 e6 14.h4 {(＋/ - )} )
11.O-O-O Qb6 12.e6
( 12.h3 Ngxe5 13.Nxe5 Nxe5 14.f4 Nd7 15.g4 {Gives decent compensation but the other way of sacrificing seems more enticing.} )
12...Ndf6
( 12...fxe6?! 13.h3 Nxf2 14.Na4 Qc7 15.Qxf2 Qf4+ 16.Kb1 Qxa4 17.h4! {White should be able to build up serious pressure after this. The two extra pawns are not very important positionally.}
( 17.Rd4!? {Planning Rh4 could also be tried but advancing the h-pawn seems a more natural way of attacking.} )
17...Qf4
( 17...e5 18.h5 g5 19.h6+ Kh8 20.Qe1 Qf4 {(＋/ - ) Is the same thing as 17...Qf4.} )
( 17...h6 {Preventing h5-h6+. Now black's will not get directly to f4 though.} 18.h5 g5 19.Rd4! Qa5 20.Qe3 Nf6 21.Bc4 Qf5 22.Rf1 c5 23.Rdd1 b6 24.Rde1 Bb7 25.Qc3 Rae8 26.Bxe6 Qf4 27.Bd7 e5 28.Bxe8 Rxe8 29.Nd2 Qd4 30.Qh3 {(＋/ - ) Black should not have near enough compensation.} )
18.h5 g5 19.h6+! Kh8 20.Qe1 {(＋/ - ) Black's position is seriously at risk of collapsing. White has very good compensation for the two pawns.} )
13.exf7
( 13.h3 Nxf2 14.Na4 Qc7 15.Qxf2 Qf4+ 16.Kb1 Qxa4 17.exf7 Be6 18.a3 Bxf7 {(=) Should be ok for black.} )
13...Qxf2 14.Bc4 b5 15.Bb3 Qxd2+ 16.Rxd2 a6 {Marin's move. I feel like it's quite important to at least remotely inconvenience black in the next couple of moves. If he gets the pieces in play reasonably he will not really be worse. The good news is white has tries.}
( 16...a5 {This also looks playable.} 17.a3 Ra7
( 17...b4?! 18.Na4 Nd5 19.Re1! Rxf7 20.Bxd5 cxd5 21.Nb6 Rb8 22.Nxc8 bxa3 23.bxa3 Rxc8 24.Rxd5 {(＋/ = ) White is more active and it is not obvious how black initiates liquidations in an effective manner.} )
18.h3!? Nh6 19.Re1 b4 20.Na4 Nxf7 21.Rde2 {(＋/ = ) With good compensation.} )
17.h3 {The most banal continuation. Drive black back before doing something.} 17...Nh6 18.g4 c5
( 18...a5!? 19.g5 a4 20.gxh6+ Kxh6 21.Bxa4 bxa4 22.Re1 Kg7 23.h4 a3 24.b3 {(＋/ = ) White seems more compact in the play to come. I think he has a small advantage.} )
( 18...Nxf7 19.Re1 e6
( 19...e5 20.Bxf7 Rxf7 21.Nxe5 Re7 22.Rd6 {(＋/ = ) White is very active.} )
20.Bxe6 Bxe6
( 20...Re8 21.Bxf7 Rxe1+ 22.Nxe1 Kxf7 23.Rd6!? {(＋/ = ) White is more active and black has weakened himself at least slightly.} )
21.Rxe6 Rac8 22.g5!? Nh5 23.Rd7 {(＋/ = ) White has got real activity. I think this is risky for black.} )
19.g5 c4 20.Bxc4 bxc4 21.gxh6+ Kxh6 22.Re1 Kg7 23.h4 {(＋/ = ) Potentially black is ok but this looks comfortable for white.} )
( 5...Bg7 6.Bh6 {Transposes to 4...Bg7.} )
( 5...b5 6.e5! Nh5
( 6...dxe5 7.dxe5 Qxd2+ 8.Bxd2 Nfd7
( 8...Nh5 9.g3 Nd7 10.Bg2 Nxe5 11.f4 Nd7 12.Nxb5 Rb8 13.Nxa7 {(＋/ - ) Black is behind.} )
( 8...Ng4 9.f4 h5 10.Nf3 Bg7 11.Bd3 a5 12.h3 Nh6 13.O-O-O {(＋/ - ) Black is not well placed.} )
9.f4 Nb6
( 9...Bg7 10.Be2 O-O 11.Bf3 b4 12.Ne4 a5 13.O-O-O {(＋/ = )} )
( 9...Na6 10.g3!? {This seems simplest.} 10...Bb7 11.Bg2 Rb8 12.O-O-O b4 13.Ne4 c5 14.h4 h5 15.Rh2 Nc7 16.Be3 e6 17.c4 bxc3 18.Nxc3 Bxg2 19.Rxg2 {(＋/ - )} )
( 9...Bb7 10.Nf3 Na6 11.h4 {(＋/ = )} )
10.g3 Bg7 11.Bg2 O-O 12.Nge2 b4 13.Ne4 Na6 14.Nf2 Bb7 15.a3 bxa3 16.Rxa3 {(＋/ = )} )
7.Be3 dxe5
( 7...Bg7 8.f4 f6 9.Nf3!? O-O 10.Bd3 fxe5 11.fxe5 Nd7 12.a4 b4 13.Ne4 {(＋/ = )} )
( 7...b4 8.Ne4 Bf5 9.Bd3 Nd7 10.f4 a5 11.Nf3 {(＋/ = )} )
8.dxe5 Qxd2+ 9.Bxd2 Bg7
( 9...b4?! 10.Na4 Nd7 11.Nf3 Bg7 12.g4 Nb6 13.gxh5!? Nxa4 14.h6 Bf8 15.a3! Bg4 16.Nd4 Rd8 17.Be3 {(＋/ - ) Black's position is close to collapse.} )
( 9...Nd7 10.f4 Bb7
( 10...b4 11.Na4 e6 12.Be3 Ng7 13.Bf2 Nf5 14.Nf3 {(＋/ = )} )
11.Nf3 a6 12.g3 c5 13.Bg2 e6 14.O-O {(＋/ = ) White should be slightly better.} )
( 9...Bb7 10.f4 Ng7 11.O-O-O Nd7 12.Nh3 a5 13.g3 b4 14.Ne4 c5 15.Bg2 {(＋/ = )} )
10.f4 f6 11.exf6
( 11.Be2!? )
( 11.Nf3!? )
11...Nxf6 12.O-O-O Nbd7 13.Nf3 Nb6 14.Re1 b4 15.Nd1 Nfd5 16.g3 {(＋/ = ) to (＋/ - ) With relatively simple play it looks like white has got a decent size advantage.} )
( 5...Qb6?! 6.O-O-O Bg7 7.Kb1 Nbd7 8.f3 {(＋/ - ) Black's setup is not optimal.} )
( 5...Nh5?! 6.Be3 Bg7 7.f3 b5 8.g4 Nf6 9.g5 {(＋/ - ) White is a tempo ahead and this should count for something.} )
( 5...h6?! 6.h3 Bg7 7.Nf3 Nbd7?! 8.e5 Nd5 9.Nxd5 cxd5 10.exd6 {(＋/ - )} )
( 5...Qc7 6.Nf3 {Often I don't exactly aim for Nf3 setups. Here is one of the more attractive times to do so though so what the heck. Black is not very flexibly set up and by playing Nf3 early we also weave into lines covered under 5...Nbd7.} 6...Bg7
( 6...Nbd7?! 7.e5 Nh5 8.exd6 exd6 9.O-O-O Nxf4 10.Qxf4 Be7 11.Re1 {(＋/ - )} )
7.Bh6 O-O 8.h4 Bxh6
( 8...Bg4 9.Nh2 {(＋/ - )} )
9.Qxh6 Ng4 10.Qd2 h5 11.a4!? c5 12.Nd5 Qd8 13.dxc5 dxc5 14.Qg5 Nc6 15.Bb5 e5 16.c3 Kg7 17.Rd1 {(＋/ = ) White has played unremarkably. He should be somewhat better though.} )
6.Nf3 {Control of e5 seems fairly important so I will recommend this.}
( 6.a3!? {Is still interesting though. If there is a downside it would be that black can go e5 immediately and the tempo gained seems significant.} 6...e5
( 6...Bg7 7.Nf3
( 7.h4 e5?
( 7...c5 8.d5
( 8.dxc5 Qxc5 9.f3
( 9.Nge2 Nc6 10.f3 h5 )
9...Nc6 10.Be3 Qa5 11.Nge2 )
8...Nbd7
( 8...h6 9.Nge2 b5 )
9.Nf3
( 9.Nge2 h5 )
( 9.Bh6 Bxh6 10.Qxh6 a6 11.Nf3 Ng4 12.Qc1 Ndf6 13.Nd2 )
)
8.dxe5 dxe5 9.Bh6 Bxh6 10.Qxh6 Rg8 11.Qd2 Be6 12.Nf3 Nbd7 13.Ng5 {(＋/ = ) White certainly should be better.} )
7...Bg4
( 7...Nbd7 8.Be2 {Transposes to 5...Nbd7.} )
8.e5 Nh5
( 8...Nd5 9.exd6 {Should transpose to 8...Nh5.} )
( 8...dxe5 9.Nxe5 Be6 10.Bc4 Bxc4 11.Nxc4 Qa6 {(＋/ = ) White can go back to e5, either now or later if he protects the knight with b3. In both cases he should have quite a good position.} )
9.exd6 Bxf3 10.gxf3 Nxf4 11.Qxf4 e5 12.Qe4 O-O 13.d5 {(＋/ = ) I prefer white becuause of the extra pawn and black's problems in opening up the position.} )
7.Be3! Nbd7
( 7...Bg7 8.dxe5!? dxe5 9.Bc4 O-O 10.Nf3 {(＋/ = ) I think looks very easy and harmonius for white and it should be worth a small edge.} )
8.Nf3 Bg7 9.dxe5 Nxe5
( 9...dxe5 10.Bc4 O-O 11.O-O Ng4?! {Otherwise white just goes h3 but this does not help.} 12.Bg5 Re8 13.h3 Ngf6 14.Be3!? {(＋/ = )} )
10.Nxe5 dxe5 11.Bc4 O-O 12.O-O-O b5 13.Ba2 Re8 14.Kb1 Qc7 15.f3 Be6 16.g4 {(＋/ = ) White is more comfortable.} )
6...Bg4
( 6...Bg7 7.Bc4!? b5 8.Bd3 Bg4 9.e5 Nh5 10.exd6 Bxf3 11.gxf3 Nxf4 12.Qxf4 e5! 13.dxe5 {There are now a fair many ways to play but white risks ending up in very unclear positions if he has no clear continuation in mind here. The following would be my idea, when I think white eventually ends up on top and crucially the positional risk does also seem at least somewhat manageable:} 13...O-O 14.Qe4!? b4 15.Nb5! Nd7 16.Nc7 Nc5
( 16...Nxe5 17.Nxa8 Nxd3+ 18.cxd3 {Transposes to 16...Nc5.} )
( 16...Bxe5 17.Nxa8 Bxb2 18.O-O Qg5+ 19.Kh1 Bxa1 20.Rxa1 Rxa8 21.Qxc6 Rd8 22.Rd1 {(＋/ = ) White has an extra pawn for the moment and seems at least marginally better.} )
17.Qe3 Bxe5
( 17...b3+ 18.Ke2 Nxd3 19.Nxa8 Nxe5 20.axb3 Qb5+ 21.c4 Nxc4 22.Nc7 Qb8 23.bxc4 Qxb2+ 24.Kf1 Qxa1+ 25.Kg2 Qd4 26.c5 {(＋/ = ) White is better.} )
( 17...Nxd3+ 18.cxd3 Qxe5 19.Qxe5 Bxe5 20.d4 Bxd4 21.Nxa8 Rxa8 22.O-O-O c5 23.Rxd4 cxd4 {(＋/ - ) White gets a pleasant endgame.} )
18.Nxa8 Nxd3+ 19.cxd3 Bxb2 20.O-O Rxa8 21.Rae1 Qd5 {(＋/ = ) The exchange up side should have some advantage.} )
( 6...Nbd7 7.a3 {Transposes to 5...Nbd7. I did not like this combination of Qa5 and Nbd7 however.} )
( 6...b5 7.e5 b4 8.exf6 bxc3 9.bxc3 exf6 {(＋/ - ) White's extra pawn is a lot more useful; plus he has better development.} )
7.e5!? Nh5
( 7...Nd5 8.Nxd5 Qxd2+ 9.Nxd2 cxd5 10.exd6 exd6 11.f3 Be6 12.Kf2 {(＋/ = ) to (＋/ - ) White is definitely more comfortable.} )
( 7...dxe5 8.Nxe5 Be6 9.Bc4 Bxc4 10.Nxc4 Qa6 11.Qe2 Bg7 12.Nd6+ Kf8 13.Qxa6 bxa6 14.Nde4!? Nd5 15.Be5!? Nd7 16.Bxg7+ Kxg7 17.O-O-O {(＋/ - ) White just has a decent plus.} )
( 7...Bxf3?! 8.exf6 Bg4 9.fxe7 Bxe7 10.d5!? {(＋/ - ) White has a positional advantage.} )
8.exd6 Bxf3 9.gxf3 Nxf4 10.Qxf4 e6 11.O-O-O Qf5
( 11...Nd7!? 12.Kb1 Qf5 13.Qg3 O-O-O! {Essentially playing for clarification.} 14.Ne4!?
( 14.Bh3 Bxd6 15.Bxf5 Bxg3 16.Bxg6 Bxf2 17.Bxf7 Nf8 18.Ne2 h5 19.Rhf1 Bh4 20.Rg1 Rd7 21.Rg8 Rxg8 22.Bxg8 {(＋/ = ) to (=) White has a pawn but there is no particular reason this should be very meaningful. } )
14...Nf6 15.Bd3 Nh5 16.Qe5 Qxe5
( 16...Bg7 17.Qc5 Qxc5 18.dxc5 {(＋/ = ) This may not be quite so bad as one would assume for black but white is better.} )
17.dxe5 Bg7 18.Rhe1 Bxe5 19.Ng5 Rd7 20.Rxe5 f6 21.Bc4 fxe5 22.Bxe6 Rf8 23.Nxh7 Rxf3 24.Ng5 Rf8 25.c4 b6 26.Rd3 {(＋/ = ) White has initiative.} )
12.Qg3 Bh6+
( 12...h5!? 13.Kb1 h4 14.Qe5 Rh5 15.Qe3 Bxd6 16.Ne4 Be7 17.Bd3 Qd5 18.c4 Qa5 19.f4 {(＋/ = ) to (＋/ - ) White is better.} )
( 12...Nd7 13.Kb1 {Transposes to 11...Nd7.} )
13.Kb1 Bf4 14.Qh4 g5
( 14...Bxd6 15.d5 Be7
( 15...cxd5 16.Nxd5 Nc6 17.Nf6+ Ke7 18.Ne4+ g5 19.Nxd6 gxh4 20.Nxf5+ exf5 21.Bh3 Rad8 22.Rxd8 Nxd8 23.Bxf5 {(＋/ = ) White has what looks like the better minor piece and an extra pawn. It seems like a two results game.} )
( 15...Qf4 16.Qh3 cxd5 17.Nxd5 Qf5 18.Qh4 Nc6 {Transposes to 14...Bxd6} )
16.Qg3!? cxd5
( 16...exd5 17.Bh3 Qf6 18.Bc8 O-O 19.Bxb7 Nd7 20.Bxa8 Rb8 21.f4!? {(＋/ - )} )
17.Qc7 Nd7 18.Bb5 Rd8 19.Qxb7 a6 20.Bc6 Qf4
( 20...Bf6 21.Nxd5 O-O 22.Nxf6+ Qxf6 23.Qxa6 Rb8 24.b3 Ne5 25.Bb7!? Nxf3 26.Bxf3 Qxf3 27.Rhf1 Qh5 28.Qd6 {(＋/ = ) White keeps an extra pawn.} )
21.Rhe1 O-O!
( 21...Qb4 22.Qc7 Qd6 23.Qxd6 Bxd6 24.Nxd5 Kf8 25.Ne3 Nb6 26.Rd3 {(＋/ = ) White seems a little better.} )
22.Bxd7 Bf6 23.Qc6 {(＋/ = ) to (∞) I think black may have some kind of compenation, mainly based around white not being very coordinated but white should somehow be better.} )
15.Qg4
( 15.Qh5 Nd7 16.Ne4
( 16.Bd3 Nf6 17.Qh6 Ng8 18.Qg7 Qf6 19.Qxf6 Nxf6 {(=) Black should be able to hold without that much difficulty.} )
16...Qg6 17.Qh3 O-O-O {(=) Black is ok.} )
15...Qxg4 16.fxg4 h5
( 16...Nd7 17.h4 Nf6 18.hxg5 Bxg5 19.Bd3 O-O-O 20.Rdg1 Rxd6 21.Ne2 Nd5 22.Bxh7 {(＋/ = ) White seems a little better after this kingside clarification.} )
17.gxh5 Rxh5
( 17...Nd7 18.Be2 f5 19.Bc4 Kf7 20.Ne2 Bxd6 21.Ng3 {(＋/ = ) } )
18.Ne4
( 18.Be2!? {This natural move seems to fall short. White probably does not want to nudge the rook.} 18...Rh4 {This works against white's Rdg1 reply and is probably best even if moving the rook elsewhere probably works.}
( 18...Rh6 19.Rdg1 Nd7
( 19...f5 20.Bc4 g4
( 20...b5 21.Bf1 Nd7 22.Ne2 Bxd6 23.Rxg5 O-O-O 24.h3 {(＋/ = ) to (=) I am not sure white's extra pawn will matter but there should be a small pull for the first player.} )
21.f3 gxf3 22.Rg8+ Kf7 23.Rhg1
( 23.d7? Nxd7 24.Rxa8 Nb6 25.Rxa7 Nxc4 {(∞) Is not clear.} )
23...Bxd6 24.R8g7+ Ke8 25.Rg8+ Kf7 26.R1g7+ Kf6 27.Rxb7 {(＋/ = ) to (∞) White should have some initiative but the position is not really clear.} )
( 19...Bxd6 20.Ne4 Bf4 21.Nxg5 {(＋/ = ) White should have some advantage with his extra pawn.} )
20.h4 gxh4 21.Ne4
( 21.Rg8+ Nf8 22.Ne4 f5 23.Bh5+ {Transposes to 21.Ne4} )
21...f5 22.Rg8+ Nf8 23.Bh5+ Rxh5 24.Nf6+ Kf7 25.Nxh5 Kxg8 26.Nxf4 Rd8 27.Rxh4 Rxd6 28.c3 {(＋/ = ) to (=) I seriously doubt white has much objectively though the position looks a bit more comfortable for the first player.} )
19.Ne4 {Now this seems needed.}
( 19.Rdg1 Bxd6! {The knight can't go to e4 anymore.} 20.Rxg5 Nd7 21.Rg8+ Nf8 {(=) Black should be ok.} )
19...Nd7 20.Rdg1 f6!? 21.Bc4 Kf7 {(=) Black is a bit weak in places but should be OK.} )
18...Nd7 19.c4
( 19.Be2 Rh6 20.h4 gxh4 21.Rdg1 f5 22.Rg8+ Nf8 23.Bh5+ Rxh5 24.Nf6+ Kf7 25.Nxh5 Kxg8 26.Nxf4 Rd8 27.c3 Rxd6 28.Rxh4 {(=) to (＋/ = ) Black should survive this.} )
19...O-O-O 20.c5 Rdh8 21.Rg1!? {It seems like white has to resort to something complicated like this. The significant downside being that the h-pawn disappears.} 21...Rxh2 22.b4 {(∞) to (＋/ = ) This seems closer to unclear compared to a position where white has advantage. White has some positional factors to work with though and if anybody is better it is him.}
( 22.Bd3 a5 23.Nxg5 Bxg5 24.Rxg5 Rxf2 25.Rdg1 Kb8 26.Rg8+ Rxg8 27.Rxg8+ Ka7 28.Rg4 {(=) to (＋/ = ) Black is somewhat under pressure though I would be surprised if he can't draw quite easily in a theoretical sense.} )
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