[Event "Pirc analysis"]
[Site "Chesspub"]
[Date "2017.01.01"]
[Round "?"]
[White "Swap variation (6.Bh6)"]
[Black "(6...Bxh6) with (7...e5)"]
[Result "*"]
[EventDate "2017.01.01"]
1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.Be3 Bg7 5.Qd2 c6 6.Bh6 Bxh6 7.Qxh6 e5 8.dxe5
( 8.Nf3 Qe7
( 8...Nbd7 9.O-O-O Qe7 10.a4!? Ng4 11.Qd2 O-O 12.d5!? {(＋/ = ) Looks mildly better for white.} )
9.O-O-O
( 9.dxe5 dxe5 10.h3
( 10.Ng5 {See 8.dxe5.} )
( 10.Bc4 b5 11.Bb3 {See 8.dxe5.} )
10...Nbd7 11.Bd3 Qf8 12.Qg5 h6 13.Qe3 Qe7 14.O-O Kf8 15.Rfd1 Kg7 16.a4 Qb4 {(=) to (＋/ = ) Does not look bad for black but should also require some precision since white is almost fully developed.} )
( 9.Bd3 Bg4 10.dxe5 dxe5 11.Ng5 Qf8 12.Qxf8+ Rxf8 13.h3 Be6 14.Nxe6 fxe6 {(=) to (＋/ = ) Seems OK for black.} )
( 9.h3? exd4 10.Nxd4 Nxe4 11.Be2 Qg5 12.Qg7 Qf6 {( = /＋)} )
( 9.Bc4?! exd4 10.Nxd4 d5 11.Bb3 Nxe4 12.O-O Qg5 {( = /＋)} )
9...Bg4 10.d5
( 10.Rd2 Nbd7 11.dxe5 dxe5 12.Ng5 Qf8 13.Qxf8+ Rxf8 14.h3 Be6 15.Nxe6 fxe6 {(=) to (＋/ = )} )
10...cxd5
( 10...Bxf3 11.gxf3 c5 12.f4 Nbd7 13.fxe5 Qxe5 {(=) to (＋/ = ) Also looks reasonable for black.} )
( 10...a6!? )
11.Bb5+
( 11.Rxd5 Nc6 12.Rd2 O-O-O 13.Qe3 Bxf3 14.gxf3 Kb8 15.Nd5 Qe6 16.Bc4 Ne7 {(=) Seems fine for black.} )
11...Nbd7 12.Rxd5 O-O-O
( 12...Bxf3 13.gxf3 O-O-O 14.Bxd7+ Rxd7 15.Rd2 Rhd8 16.Rhd1 Qe6 17.Qe3 Kb8 18.f4 b6
( 18...a6 19.f3 Nh5 20.fxe5 dxe5 21.Nd5 {(＋/ = )} )
19.a4 Qg4 20.fxe5 dxe5 21.f3 {(＋/ = ) Is another way to play but white is more comfortable.} )
13.Bxd7+ Rxd7 14.Qe3
( 14.Rd3 Kb8 15.Rhd1
( 15.Qe3 Be6 16.Nb5 b6 17.b3 Ng4 18.Qd2 f5 {(∞) With counterplay.} )
15...b6 16.Qg5 Rhd8 17.h3 Be6 {(=) Black is a bit passive but should have a fundamentally sound position.} )
14...Kb8
( 14...b6 15.Rd2 Be6 16.Rhd1 Rhd8 17.Nb5 Kb8 18.b3 Ng4 19.Qg5 f6 20.Qh4 {(＋/ = ) Probably gives white some positional grip.} )
15.Rd2
( 15.Nb5 b6 16.Rd2 Rc8 17.Rhd1 Ne8 {Looks like a decent setup.} )
15...a6
( 15...Rc8 16.Rhd1 Qd8 {Instead of 16...a6 transposing to 15...a6.} 17.h3!? Rxc3!? 18.bxc3 Be6 {(∞) to (＋/ = ) With some positional compensation for the exchange.} )
( 15...Be6 16.Nb5 b6 17.Rhd1 Rhd8 18.b3 Ng4 19.Qg5 f6 20.Qh4 {(＋/ = )} )
16.Rhd1 Rc8 17.Kb1 Be6 {(∞) Black is rather coordinated and should have some kind of future.} )
( 8.Bc4? exd4 9.Nce2 Nxe4 10.Nxd4 d5 11.Bd3 Qg5 12.Qxg5 Nxg5 {( - / ＋) Would be awesome for black.} )
( 8.Nge2 Nbd7 9.f3 b5 {Black should not be displeased about facing such a slow setup.} )
( 8.O-O-O Qe7 9.Kb1
( 9.Nf3 Bg4 {Transposes to 8.Nf3.} )
9...exd4
( 9...b5!? 10.f3
( 10.Nf3 Nbd7 11.dxe5 Nxe5
( 11...dxe5?! 12.Bxb5 cxb5 13.Nxb5 Ng4 14.Qg7 Qf8 15.Nc7+ Ke7 16.Qxf8+ Rxf8 17.Nxa8 Bb7 18.Nc7 Nxf2 19.Nd5+ Bxd5 20.exd5 {(＋/ = ) Is probably good for white.} )
12.Nxe5
( 12.Bxb5?! cxb5 13.Nxb5 Nfg4 {( = /＋) to (∞)} )
12...dxe5 13.Be2 Be6 14.f3 Ng8 15.Qe3 Nf6 {Black is OK.} )
10...Na6!? 11.Nge2 Nc7 12.Nc1 {(＋/ = ) to (=) Black is not going to get a great deal done in terms of counterplay, although his position should be playable} )
10.Rxd4 Nbd7 11.f3 Nb6 12.a4 a5 13.Nge2 Be6 14.Qe3 O-O-O 15.Rd1 Nfd7 {(=) to (＋/ = ) Looks like a more or less OK setup for black.} )
8...dxe5 9.Nf3
( 9.Bc4 b5 10.Bb3
( 10.Qg7 Rf8 11.Bb3 Nbd7 12.Nf3 a5 13.a4 b4 14.Nb1 Nxe4 15.Nbd2 Nxd2 16.Nxd2 Qf6 {(=) Equal.} )
10...Qe7 11.a3 Nbd7 {White has nothing better than 12.Nf3 with transposition to 9.Nf3 lines.} )
9...Qe7
( 9...Nbd7 {If white wants to insist on black having to put the queen on e7 he can probably go 8.Nf3. The idea, as I imagine it, would then be 8...Nbd7 9. 0-0-0 (or some equivalent move) with seemingly good chances of advantage for white.} 10.a4!?
( 10.Bc4 b5 11.Bb3 a5!? {Would take the game into other paths compared to if black had played Qe7. And looks not obviously bad for black.} )
10...Qe7 11.Bc4 Nc5 12.O-O Bg4 13.Ng5 Rf8 14.b4 Ncd7 15.Rfb1 Bh5 16.Qg7 h6 17.Bxf7+ Rxf7 18.Nxf7 Qxf7 19.Qxh6 {(＋/ = ) Should be quite pleasant for white.} )
10.Bc4
( 10.Ng5 {Looks like a refinement but probably isn't.} 10...Be6
( 10...Nbd7?! 11.Bc4 Rf8 12.Nxh7 Nxh7 13.Qxh7 b5!? 14.Be2 {(＋/ = ) With some pull for white. Shows why black needs some idea if he is to play this way.} )
( 10...b5!? 11.a4 b4 12.Nd1 Nbd7 13.Ne3 Nc5 14.Be2 Ne6 15.Nxe6 Bxe6 16.Rd1 Rd8 17.f3 Rxd1+ 18.Nxd1 Nd7 {Should also be OK for black.} )
11.g3 Nbd7 12.Nxe6 Qxe6 13.f3 Qd6 14.a3 Qf8 15.Qd2 O-O-O {(=) Black is OK.} )
( 10.Be2 Bg4 11.a3 Nbd7 12.Rd1 Bxf3 13.Bxf3 O-O-O {(=) Black seems fine.} )
( 10.a4 Bg4 11.Nd2 Nbd7 12.Bc4 Nc5 13.f3 Be6 14.O-O-O O-O-O {(=) Black seems fine.} )
10...b5
( 10...Nbd7!? 11.Ng5
( 11.a4!? )
11...Rf8 12.Nxh7 Nxh7 13.Qxh7 {The question now is if black has any better way of playing the position than b7-b5, which since it has been delayed can now be met by Be2 as well as the transpositional Bb3.} 13...Qg5
( 13...a5 14.Be2 Qg5 15.Qh3 Nc5 16.Qg3 Qxg3 17.hxg3 {(＋/ = ) Seems like a comfortable pawn up edge.} )
( 13...Nc5 14.Qh6 b5 15.Be2 Ne6 16.O-O-O!? Nd4 17.Bd3 {(＋/ = ) White should definitely be somewhat better.} )
( 13...b5 14.Be2 {(＋/ = )} )
14.h4 Qxg2 15.O-O-O b5!? 16.Bb3 a5 17.h5 gxh5 18.Qxh5 Qg6 19.a3!? {(＋/ = ) White has the open files and black is a bit behind in development.} )
11.Bb3 Nbd7 {Very natural though this move also allows fairly straightforward pawn snaffling and may thus be riskier than alternatives.}
( 11...a5!? {Looks optimistic and is probably a bit risky; on the other hand black does get more play in this variation compared to both 11...Nbd7 and 11...Be6.} 12.a4
( 12.a3 Ba6
( 12...Nbd7 13.Ng5 Rf8 14.Nxh7 Nxh7 15.Qxh7 {Transposes to 11...Nbd7.} )
13.Ng5 Rf8 14.Nxh7 Nxh7 15.Qxh7 a4 16.Ba2 b4 17.axb4 Qxb4 18.Qh3
( 18.Bxf7+ Rxf7 19.Qh8+ Rf8
( 19...Qf8!? 20.Qxe5+ Kd8 21.f3 Kc8 22.Kf2 {(＋/ = ) Is probably better for white.} )
20.Qxe5+ Kd8 21.f3 Nd7 22.O-O-O Bc8!? {(∞) In a theoretical sense black should just be playing for a draw. The position is probably best described as unclear though.} )
18...Qxb2
( 18...Ra7?! 19.Qe3 Rd7 20.f3 Rd4 21.Kf2 Qxb2 22.Rhc1 Nd7!? 23.Nxa4! Rxa4 24.Bxf7+ Kxf7 25.Rxa4 {(＋/ = )} )
19.Kd2 Qb6 20.Qe3 Qd8+
( 20...Qa5 21.Kc1 a3 22.Bb3 Nd7 23.Nb1 {(＋/ = )} )
21.Kc1 Qd4 22.Qxd4 exd4 23.Nxa4 Nd7 {(＋/ = )} )
( 12.Ng5 Rf8 13.a4 Ng8!? 14.Qh4 h6 15.Nf3 Qxh4 16.Nxh4 b4 17.Nd1 Nd7 {(=) Black is fine.} )
12...b4 13.Nb1 Nbd7
( 13...Ba6 14.Nbd2 Nbd7 {Transposes to 13...Nbd7.} )
( 13...Nxe4!? {Looks a bit loose but could be interesting as well.} )
14.Nbd2
( 14.Ng5 Rf8 15.Nxh7 Nxh7 16.Qxh7 Qg5!? 17.Nd2 Nf6 18.Qg7 Ke7 19.h4 Qxg2 20.O-O-O Qg4 21.h5 gxh5 22.Qh6 Qf4 23.Qxf4 exf4 {(＋/ = ) to (=) And it is not clear how much white's advantage is worth.} )
14...Ba6
( 14...Qf8 15.Qe3!? Ng4 16.Qe2 Qe7 17.h3 Ngf6 18.O-O O-O 19.Qe3 {(＋/ = )} )
15.Ng5 Rf8 16.Nxh7 Nxh7 17.Qxh7 O-O-O 18.Qh3
( 18.O-O-O Nc5 19.Qh3+ Kc7 {Transposes to 18.Qh3.} )
( 18.Bc4 Kc7 19.Qh3
( 19.Bxa6? Rh8 20.Qg7 Rdg8 21.Qxg8 Rxg8 {( - ＋)} )
19...Bxc4 20.Nxc4 Qc5 21.b3 Nb6 {(=) With compensation.} )
18...Kc7 19.O-O-O
( 19.Qe3 Nc5 20.O-O-O {Transposes.} )
19...Nc5 20.Qe3 Rd4 21.Ba2 f5!? 22.exf5 gxf5 {(∞) to (＋/ = ) With some compensation and in general a quite active position for black.} )
( 11...Be6 12.Bxe6 Qxe6 13.O-O Nbd7 14.Rfd1 {(＋/ = ) Black is slightly worse positionally but does not face immediate problems.} )
12.Ng5
( 12.O-O Nc5
( 12...a5 13.a3 Nc5
( 13...a4 14.Ba2 Nc5 15.h3 Nh5 16.g4 Nf4 17.Qg7 Rf8 18.Qxe5 Qxe5 19.Nxe5 {(＋/ = )} )
14.Ba2
( 14.Ng5?! Nxb3 15.cxb3 Nh5! 16.b4 f6 17.Nf3 {(=) Black is fine.} )
14...Bg4 15.Ng5 Be6
( 15...Ne6 16.Bxe6 Bxe6 17.Rfd1 {(＋/ = ) The extra pair of pieces should favor white's ambitions.} )
16.Nxe6 Nxe6 17.Bxe6 Qxe6 {(=) to (＋/ = ) Can't be horrible for black.} )
13.Ng5
( 13.a3 Nxb3 14.cxb3 Bg4 15.Nd2
( 15.Ng5 Nh5 16.h3 Bc8 17.b4 f6 18.Nf3 Ng7!? 19.Qe3 O-O {(=) Black is OK.} )
15...Rd8 16.b4 g5 17.f3 Rg8 18.fxg4 Rg6 19.Qh3 Rxd2 20.Rad1 Rxd1 21.Rxd1 Kf8 {(=) to (＋/ = ) Black should have few problems holding this with accurate play.} )
( 13.Rfe1 Nh5 14.Nd2
( 14.Rad1 Bg4 15.Bd5!? {Probably it is hard to play for advantage without doing this but it doesn't turn out great.} 15...cxd5 16.Nxd5 Qb7 17.Qg5 Be6 18.g4 f6 19.Qe3 Bxg4 20.Qxc5 Rc8 21.Qa3 Rf8 {( = /＋) to (∞)} )
14...f6 15.Qe3 Be6 16.a4 b4 17.Ne2 Ng7 {(=) Black should be fine.} )
13...Nxb3
( 13...Rf8?! 14.Nxh7 Nxh7 15.Qxh7 {Transposes to 12.Ng5.} )
14.axb3 Nh5! 15.Nxh7 {Other moves allows black to stabilise somewhat.} 15...Kd8! 16.Qd2+
( 16.Rfd1+ Kc7 17.Qe3 Rxh7 18.Rxa7+ Rxa7 19.Qxa7+ Bb7 20.Rd3 b4 21.Qa5+ Kc8 22.Na4 Nf4 23.Rd1 Qg5 24.Nb6+ Kb8 25.Nd7+ Kc8 26.Nb6+ Kb8 27.Nd7+ Kc8 28.g3 Ne2+ 29.Kf1 Nd4 30.Nb6+ Kb8 31.Nd7+ Kc8 32.Nb6+ Kb8 33.Nd7+ Kc8 34.Nb6+ {(=) Threefold repetition.} )
16...Ke8 17.Qh6
( 17.Nd5?! cxd5 18.Qxd5 Rb8 19.Rxa7 Qxa7 20.Qxe5+ Be6 21.Qxh8+ Ke7 22.Qc3 Rc8 23.Qd2 Qc5 {( = /＋) to (∞) Does not look brilliant for white.} )
( 17.Ng5?! Nf4 18.Nf3 Bh3!? 19.gxh3 Rxh3 20.Qe3 Qe6 21.Ne2 Nxe2+ 22.Kh1 Qg4 23.Qxe2 Qh5 {( = /＋) Is very unattractive for white.} )
17...Kd8 18.Qd2+ Ke8 19.Qh6 {(=) Threefold repetition.} )
( 12.a3 Nc5 13.Ba2 Be6 14.Bxe6 Nxe6 15.O-O Nd7 {(=) Black is OK.} )
12...Rf8 13.Nxh7
( 13.O-O Nc5 {Transposes to 12.0-0.} )
13...Nxh7 14.Qxh7 Nc5
( 14...a5 15.a3 Ba6
( 15...Nc5 16.Qg7!? Nxb3 17.cxb3 Bg4 18.h3 Bd7 19.O-O {(＋/ = ) } )
( 15...Qg5 16.h4 Qxg2 17.O-O-O Qf3 18.h5 gxh5 19.Qh6 Qf6 20.Rxh5 Qxh6+ 21.Rxh6 {(＋/ = ) } )
( 15...a4 16.Ba2 b4 17.axb4 Qxb4 18.O-O Qxb2 19.Qh3!? {(＋/ - ) With excellent positional compensation.} )
16.Qh3 Nc5
( 16...Rb8 17.Qe3 Nc5 18.h4 Rh8 19.O-O-O Nxb3+ 20.cxb3 Bc8 21.Ne2 {(＋/ - )} )
17.O-O-O Bc8 18.Qe3 {(＋/ = ) Black lacks compensation.} )
( 14...Qg5 15.h4 Qxg2 16.O-O-O a5 17.h5 gxh5 18.Qxh5 Qg6 {Is covered under 10...Nbd7.} )
15.Qh6
( 15.O-O!? a5 16.a3 Nxb3 17.cxb3 Be6 18.Qh6
( 18.Rac1 Rd8 19.Nd1 Qf6 20.Rxc6 Kd7 21.Rxe6 Qxe6 22.Qh4 {(∞) to (＋/ = ) White has two pawns for the exchange, which normally would give some advantage. Probably though, there should be some counterplay there thanks to rooks being quite strong in this kind of position.} )
( 18.Rfc1 Bxb3 19.Nd1 O-O-O 20.Qh3+ Be6 21.Qc3 Qc7 22.b4 a4 23.Nb2 Rd4 24.Qxc6 Qxc6 25.Rxc6+ Kb7 26.Rc5 Kb6 27.Kf1 Rxe4 )
( 18.b4 O-O-O 19.Qh6 axb4 {(∞) Black will be able to challenge for the a-line.} )
18...Bxb3 19.Qe3 Be6 20.Rfc1 Rc8 {(=) to (＋/ = ) I Would expect to be defensible.} )
( 15.Qg7 Bd7 16.O-O O-O-O 17.f4 Ne6 18.Bxe6 Bxe6 {(∞) With compensation for black since he has good chances of activating his pieces and b4 will drive the white knight to a bad square.} )
15...a5 16.a3 Be6
( 16...Ba6 17.Rd1 Nxb3
( 17...Rd8 18.Qe3 Rxd1+ 19.Kxd1 Rh8 20.Ba2 Bc8 21.Kc1 Kf8 22.Nb1 Kg7 23.Nd2 {(＋/ = ) White is a bit better.} )
( 17...b4 18.axb4 axb4 19.Ba4 Nxa4 20.Nxa4 Bb5 21.b3 Rg8 22.g3 {(＋/ = )} )
18.cxb3 b4 19.axb4 axb4 20.Na4 Bb5 21.Nb6 Rd8 22.Qe3 Rxd1+ 23.Kxd1 Rh8 24.Kc2 Kf8 25.h3 {(＋/ = ) White is somewhat better.} )
( 16...Nxb3 17.cxb3 Be6 18.Qe3 f6
( 18...Rh8 19.Ne2 Kf8 20.O-O Kg7 {(＋/ = ) With speculative compensation.} )
19.Qb6 Rc8 20.O-O Kf7 21.Qxa5 Bxb3 {(＋/ = ) Should also not be full compensation.} )
17.Bxe6 Nxe6 18.Qe3
( 18.O-O )
18...O-O-O
( 18...Nd4 19.Rc1 O-O-O 20.Ne2!? Qc5 21.Nxd4 Qxd4 22.O-O Kc7 23.Qe1!? {(＋/ = )} )
( 18...Rd8 19.O-O {(＋/ = ) Without enough compensation for black.} )
19.O-O
( 19.Rd1 Nd4 20.Rd2 Qd7 21.f3 f5 22.exf5 Nxf5 23.Qf2 Qxd2+ 24.Qxd2 Rxd2 25.Kxd2 Nh4 26.Rg1 Rxf3 {(=) Equalises cleanly.} )
( 19.Ne2 Kb7 20.Rd1 Rd6 21.Rxd6 Qxd6 22.O-O Rd8 {(=) White has problems improving his position.} )
19...Rd6
( 19...Qc5 20.Qxc5 Nxc5 21.Rac1 Rd4 22.f3 Rfd8 23.Nd1 Rd2 24.Re1 Kc7 25.Ne3 Na4 26.Nf1 R2d4 27.Rb1 {(＋/ = )} )
20.Rad1
( 20.b4 )
( 20.Ne2 )
20...Rfd8 21.Rxd6 Qxd6 22.h3 {This looks simplest. White acts prophylatically against back rank issues and gives himself the possibility to play Kh2 at some point}
( 22.g3 Kb7!?
( 22...Nd4 23.Rc1 Kb7 24.Kg2! f5
( 24...Qe6?! 25.a4 b4 26.Ne2 c5 27.c3 Nb3 28.Re1 {(＋/ = ) Looks dire for black.} )
25.Qg5!? Rh8 26.Rd1 Rh5 27.Qe3 Qe6 28.exf5 Qxf5 29.h4 Nxc2 {(＋/ = ) Black's position is a bit loose, though he has for the moment regained lost material.} )
23.h4
( 23.Kg2 Qd2 24.Nd5 Qd4 25.Qxd4 exd4 26.Nf4 Nxf4+ 27.gxf4 c5 {White should get some chances, though this should probably be holdable for black.} )
23...Qd2 24.Nd5 Nd4 25.c3 cxd5 26.cxd4 Qxb2 27.dxe5 d4 28.Qd3 Rc8 29.Qf3!? {With some initiative for white.} )
( 22.Qf3 Ng5! 23.Qe3 Ne6 24.Qf3 Ng5 25.Qg4+ Ne6 26.Nd1 Qd4 27.h3 Rd7 28.Qh4 Nc5 29.Nc3 Kc7 {Is not really harmonious for white.} )
22...Nd4
( 22...Qc5 23.Qxc5 Nxc5 24.f3 Ne6 25.Rf2 Kc7 26.Nb1 Rd1+ 27.Rf1 Rd7 28.Kf2 a4 29.h4 {(＋/ = )} )
23.Rc1
( 23.Kh2!? Nxc2 24.Nxb5 Qb8 25.Na7+ Kc7 26.Qc5 Nd4 27.Qxa5+ Qb6 28.Qxe5+ Kb7 29.Qe7+ Qc7+ 30.Qxc7+ Kxc7 31.h4 Kb7 32.Nxc6 Kxc6 33.Kg3 {(∞) to (＋/ = )} )
23...Kb7 24.Kh2 f5!? 25.exf5!? gxf5 26.Ne2 {(＋/ = ) White should be a bit better thanks to his extra pawn.} *