[Comment "auto-generated from http://www.jesseo.com/chesspublishing/pgn.php?pgndata=[Event%20%26quot;Pirc%204.Bf4%20analysis%26quot;]%0A[Site%20%26quot;Chesspub%20Forum%26quot;]%0A[Date%20%26quot;2018.02.23%26quot;]%0A[Round%20%26quot;?%26quot;]%0A[White%20%26quot;Pirc%204.Bf4%26quot;]%0A[Black%20%26quot;4...c6%20and%205...b5%26quot;]%0A[Result%20%26quot;*%26quot;]%0A[EventDate%20%26quot;2018.02.23%26quot;]%0A%0A1.e4%20d6%202.d4%20Nf6%203.Nc3%20g6%204.Bf4%20c6%205.Qd2%20b5%206.Bd3%20Bg7%207.a4%20b4%20%26%23123;Pretty%20obvious%20and%20also%20best.%26%23125;%208.Nce2%20%0A%26nbsp;%20%26nbsp;%20(%208.Nd1%20a5%209.Bh6%20O-O%2010.Bxg7%20%0A%26nbsp;%20%26nbsp;%26nbsp;%20%26nbsp;%26nbsp;%20(%2010.h4!?%20Bxh6%2011.Qxh6%20e5%2012.Ne2%20exd4%2013.Nxd4%20d5%2014.exd5%20Qxd5%2015.Nf3%20Ng4%20%26%23123;(%3D)%20White%20doesn%27t%20appear%20to%20have%20anything%20special.%26%23125;%20)%0A%26nbsp;%20%26nbsp;%26nbsp;%20%26nbsp;%26nbsp;%20(%2010.Nf3%20Bg4%2011.Ng1!?%20e5%2012.Bxg7%20Kxg7%2013.f3%20Be6%2014.Ne2%20Nbd7%2015.c3%20d5%20%26%23123;With%20counterplay.%26%23125;%20)%0A%26nbsp;%20%26nbsp;%2010...Kxg7%2011.f4%20%0A%26nbsp;%20%26nbsp;%26nbsp;%20%26nbsp;%26nbsp;%20(%2011.h4%20h5%2012.Nf3%20Nbd7%2013.Ne3%20e5%2014.dxe5%20dxe5%2015.Nc4%20Qc7%20%26%23123;(%3D)%20Arguably%20white%20having%20the%20c4%20square%20for%20now%20is%20not%20a%20big%20problem%20as%20black%20can%20still%20fight%20for%20the%20square%20as%20the%20game%20progresses.%26%23125;%20)%0A%26nbsp;%20%26nbsp;%26nbsp;%20%26nbsp;%26nbsp;%20(%2011.Ne3%20c5%2012.dxc5%20dxc5%2013.Nf3%20Nc6%2014.O-O-O%20e5%2015.h4%20h5%20%26%23123;(%3D)%20I%20don%27t%20think%20white%20has%20anything%20here.%26%23125;%20)%0A%26nbsp;%20%26nbsp;%2011...c5%2012.dxc5%20Bb7%2013.cxd6%20exd6%2014.Nf2%20Qb6%2015.Ne2%20Nbd7%2016.O-O%20Nxe4%2017.Bxe4%20Bxe4%20%26%23123;(%3D)%26%23125;%20)%0A%26nbsp;%20%26nbsp;%20(%208.Na2%20a5%209.c3%20e5!?%2010.dxe5%20dxe5%2011.Bg5%20bxc3!?%2012.Qxc3%20O-O%20%26%23123;Black%20is%20not%20worse.%26%23125;%20)%0A%26nbsp;%20%26nbsp;%20(%208.Nb1%20a5%20%26%23123;The%20knight%20will%20have%20trouble%20activating%20itself%20properly.%26%23125;%20)%0A8...O-O%20%0A%26nbsp;%20%26nbsp;%20(%208...Nbd7%209.Nf3%20O-O%2010.Bh6%20Bxh6%2011.Qxh6%20e5%20%26%23123;May%20be%20a%20bit%20dangerous.%26%23125;%20)%0A%26nbsp;%20%26nbsp;%20(%208...a5%209.Bh6%20%0A%26nbsp;%20%26nbsp;%26nbsp;%20%26nbsp;%26nbsp;%20(%209.Nf3%20Bg4!?%20%0A%26nbsp;%20%26nbsp;%26nbsp;%20%26nbsp;%26nbsp;%20%26nbsp;%26nbsp;%20%26nbsp;(%209...Nbd7%2010.Bh6%20Bxh6%2011.Qxh6%20e5%20%26%23123;Transposes%20to%209.Bh6.%26%23125;%20)%0A%26nbsp;%20%26nbsp;%26nbsp;%20%26nbsp;%26nbsp;%2010.Bh6%20Bxh6%2011.Qxh6%20Bxf3%2012.gxf3%20e5%20%26%23123;(%E2%88%9E)%20This%20is%20hard%20to%20assess%20yet%20I%20would%20generally%20trust%20the%20resilience%20of%20black%27s%20position.%26%23125;%20)%0A%26nbsp;%20%26nbsp;%209...Bxh6%20%0A%26nbsp;%20%26nbsp;%26nbsp;%20%26nbsp;%26nbsp;%20(%209...O-O%2010.Bxg7%20Kxg7%2011.e5!?%20%26%23123;Is%20a%20bit%20annoying.%26%23125;%20)%0A%26nbsp;%20%26nbsp;%2010.Qxh6%20Nbd7%2011.Nf3%20%0A%26nbsp;%20%26nbsp;%26nbsp;%20%26nbsp;%26nbsp;%20(%2011.f4%20Ba6%2012.Bxa6%20Rxa6%2013.e5%20Nd5%2014.O-O-O%20N7b6%20%26%23123;(%E2%88%9E)%20Probably%20black%20can%20live%20with%20the%20defects%20of%20his%20position,%20meanwhile%20white%20is%20a%20bit%20inflexible%20so%20it%20is%20not%20totally%20clear%20he%20has%20so%20many%20threatening%20ideas.%26%23125;%20)%0A%26nbsp;%20%26nbsp;%2011...e5%2012.dxe5%20dxe5%2013.h3!?%20Ng8%2014.Qe3%20%26%23123;(%EF%BC%8B/%20%3D%20)%20to%20(%3D)%20White%20is%20a%20bit%20more%20comfortable.%26%23125;%20)%0A9.Nf3%20%0A%26nbsp;%20%26nbsp;%20(%209.Bh6%20Bxh6%2010.Qxh6%20e5%2011.dxe5%20%0A%26nbsp;%20%26nbsp;%26nbsp;%20%26nbsp;%26nbsp;%20(%2011.Nf3%20Ng4%2012.Qd2%20exd4%2013.Nexd4%20c5!?%20%26%23123;With%20counterplay.%26%23125;%20)%0A%26nbsp;%20%26nbsp;%2011...dxe5!?%2012.Nf3%20Ng4%2013.Qd2%20Qe7%20%26%23123;Black%20is%20OK.%26%23125;%20)%0A%26nbsp;%20%26nbsp;%20(%209.Qxb4%20Nbd7%2010.Qd2%20%0A%26nbsp;%20%26nbsp;%26nbsp;%20%26nbsp;%26nbsp;%20(%2010.Qa3%20c5%2011.dxc5%20Nxc5%20%26%23123;(%E2%88%9E)%20With%20compensation.%26%23125;%20)%0A%26nbsp;%20%26nbsp;%26nbsp;%20%26nbsp;%26nbsp;%20(%2010.c3?!%20e5!%2011.Bg3%20c5%2012.Qa3%20cxd4%2013.cxd4%20Bb7%20%26%23123;(%3D%20/%EF%BC%8B)%26%23125;%20)%0A%26nbsp;%20%26nbsp;%26nbsp;%20%26nbsp;%26nbsp;%20(%2010.f3?!%20Rb8%2011.Qa3%20e5%2012.Bg3%20Nh5%2013.Bf2%20d5%20%26%23123;(%3D%20/%EF%BC%8B)%20With%20some%20initiative%20for%20black.%26%23125;%20)%0A%26nbsp;%20%26nbsp;%2010...c5%2011.c3%20e5%20%0A%26nbsp;%20%26nbsp;%26nbsp;%20%26nbsp;%26nbsp;%20(%2011...cxd4%2012.cxd4%20e5%2013.dxe5%20Nxe5%20%26%23123;(%3D%20/%EF%BC%8B)%26%23125;%20)%0A%26nbsp;%20%26nbsp;%2012.dxe5%20Nxe5%2013.Bxe5%20dxe5%2014.Nf3%20Rb8%2015.O-O%20Qc7!?%20%26%23123;(%E2%88%9E)%20With%20compensation.%26%23125;%20)%0A9...Bg4%20%0A%26nbsp;%20%26nbsp;%20(%209...a5!?%2010.Bh6%20Bg4%2011.Bxg7%20Kxg7%2012.e5%20dxe5%2013.Nxe5%20Bxe2%2014.Bxe2%20Nbd7%2015.Nxc6%20Qc7%2016.Bb5%20Rfc8%20%26%23123;(%3D)%20to%20(%EF%BC%8B/%20%3D%20)%20Black%20should%20have%20good%20chances%20to%20sucessfully%20simplify%20the%20position%20and%20equalise%20or%20very%20near%20to%20it.%26%23125;%20)%0A%26nbsp;%20%26nbsp;%20(%209...Nbd7%2010.Bh6%20Bxh6%2011.Qxh6%20e5%20%26%23123;Again%20I%20will%20note%20that%20this%20may%20well%20be%20a%20bit%20dangerous.%20The%20problem%20is%20the%20combination%20of%20black%20having%20castled%20and%20that%20he%20doesn%27t%20necessarily%20have%20really%20desirable%20ways%20of%20getting%20the%20active%20white%20queen%20away%20from%20h6.%26%23125;%20)%0A10.Bh6%20%0A%26nbsp;%20%26nbsp;%20(%2010.Qxb4!?%20%26%23123;Is%20possibly%20critical%20and%20I%20am%20not%20quite%20sure%20what%20happens%20with%20absolute%20best%20play,%20although%20here%20is%20an%20example%20of%20what%20could%20happen.%26%23125;%2010...Nbd7%2011.Qd2%20c5%2012.c3%20e5!?%2013.dxe5%20dxe5%2014.Be3!?%20c4%2015.Bxc4%20Nxe4%20%26%23123;(%E2%88%9E)%20to%20(%EF%BC%8B/%20%3D%20)%26%23125;%20)%0A10...Nbd7%20%0A%26nbsp;%20%26nbsp;%20(%2010...Bxh6%2011.Qxh6%20Bxf3%2012.gxf3%20e5%20%26%23123;Is%20maybe%20playable.%26%23125;%20)%0A%26nbsp;%20%26nbsp;%20(%2010...Bxf3%2011.gxf3%20Nbd7%20%0A%26nbsp;%20%26nbsp;%26nbsp;%20%26nbsp;%26nbsp;%20(%2011...Bxh6?!%2012.Qxh6%20Nbd7%2013.f4%20e5%2014.Rg1%20%26%23123;Seems%20risky%20positionally.%26%23125;%20)%0A%26nbsp;%20%26nbsp;%2012.Bxg7%20Kxg7%2013.Qxb4%20%26%23123;Transposes%20to%2010...Nbd7.%26%23125;%20)%0A%26nbsp;%20%26nbsp;%20(%2010...a5%20%26%23123;Transposes%20to%209...a5.%26%23125;%20)%0A11.Bxg7%20Kxg7%2012.Qxb4%20Bxf3%20%0A%26nbsp;%20%26nbsp;%20(%2012...c5!?%20)%0A13.gxf3%20c5%2014.Qd2%20cxd4%2015.Nxd4%20Qb6%2016.c3%20e5%2017.a5%20Qb7%2018.a6%20Qb6%2019.Nb5%20Nc5%20%26%23123;(%E2%88%9E)%20If%20this%20is%20not%20just%20full%20compensation%20then%20at%20least%20white%20will%20have%20to%20work%20extremely%20hard%20to%20drive%20back%20black%27s%20generally%20well%20entrenched%20pieces%20and%20pawns.%26%23125;%20*"]
[Event "Pirc 4.Bf4 analysis"]
[Site "Chesspub Forum"]
[Date "2018.02.23"]
[Round "?"]
[White "Pirc 4.Bf4"]
[Black "4...c6 and 5...b5"]
[Result "*"]
[EventDate "2018.02.23"]

1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.Bf4 c6 5.Qd2 b5 6.Bd3 Bg7 7.a4 b4 {Pretty obvious and also best.} 8.Nce2 
    ( 8.Nd1 a5 9.Bh6 O-O 10.Bxg7 
        ( 10.h4!? Bxh6 11.Qxh6 e5 12.Ne2 exd4 13.Nxd4 d5 14.exd5 Qxd5 15.Nf3 Ng4 {(=) White doesn't appear to have anything special.} )
        ( 10.Nf3 Bg4 11.Ng1!? e5 12.Bxg7 Kxg7 13.f3 Be6 14.Ne2 Nbd7 15.c3 d5 {With counterplay.} )
    10...Kxg7 11.f4 
        ( 11.h4 h5 12.Nf3 Nbd7 13.Ne3 e5 14.dxe5 dxe5 15.Nc4 Qc7 {(=) Arguably white having the c4 square for now is not a big problem as black can still fight for the square as the game progresses.} )
        ( 11.Ne3 c5 12.dxc5 dxc5 13.Nf3 Nc6 14.O-O-O e5 15.h4 h5 {(=) I don't think white has anything here.} )
    11...c5 12.dxc5 Bb7 13.cxd6 exd6 14.Nf2 Qb6 15.Ne2 Nbd7 16.O-O Nxe4 17.Bxe4 Bxe4 {(=)} )
    ( 8.Na2 a5 9.c3 e5!? 10.dxe5 dxe5 11.Bg5 bxc3!? 12.Qxc3 O-O {Black is not worse.} )
    ( 8.Nb1 a5 {The knight will have trouble activating itself properly.} )
8...O-O 
    ( 8...Nbd7 9.Nf3 O-O 10.Bh6 Bxh6 11.Qxh6 e5 {May be a bit dangerous.} )
    ( 8...a5 9.Bh6 
        ( 9.Nf3 Bg4!? 
            ( 9...Nbd7 10.Bh6 Bxh6 11.Qxh6 e5 {Transposes to 9.Bh6.} )
        10.Bh6 Bxh6 11.Qxh6 Bxf3 12.gxf3 e5 {(∞) This is hard to assess yet I would generally trust the resilience of black's position.} )
    9...Bxh6 
        ( 9...O-O 10.Bxg7 Kxg7 11.e5!? {Is a bit annoying.} )
    10.Qxh6 Nbd7 11.Nf3 
        ( 11.f4 Ba6 12.Bxa6 Rxa6 13.e5 Nd5 14.O-O-O N7b6 {(∞) Probably black can live with the defects of his position, meanwhile white is a bit inflexible so it is not totally clear he has so many threatening ideas.} )
    11...e5 12.dxe5 dxe5 13.h3!? Ng8 14.Qe3 {(＋/ = ) to (=) White is a bit more comfortable.} )
9.Nf3 
    ( 9.Bh6 Bxh6 10.Qxh6 e5 11.dxe5 
        ( 11.Nf3 Ng4 12.Qd2 exd4 13.Nexd4 c5!? {With counterplay.} )
    11...dxe5!? 12.Nf3 Ng4 13.Qd2 Qe7 {Black is OK.} )
    ( 9.Qxb4 Nbd7 10.Qd2 
        ( 10.Qa3 c5 11.dxc5 Nxc5 {(∞) With compensation.} )
        ( 10.c3?! e5! 11.Bg3 c5 12.Qa3 cxd4 13.cxd4 Bb7 {(= /＋)} )
        ( 10.f3?! Rb8 11.Qa3 e5 12.Bg3 Nh5 13.Bf2 d5 {(= /＋) With some initiative for black.} )
    10...c5 11.c3 e5 
        ( 11...cxd4 12.cxd4 e5 13.dxe5 Nxe5 {(= /＋)} )
    12.dxe5 Nxe5 13.Bxe5 dxe5 14.Nf3 Rb8 15.O-O Qc7!? {(∞) With compensation.} )
9...Bg4 
    ( 9...a5!? 10.Bh6 Bg4 11.Bxg7 Kxg7 12.e5 dxe5 13.Nxe5 Bxe2 14.Bxe2 Nbd7 15.Nxc6 Qc7 16.Bb5 Rfc8 {(=) to (＋/ = ) Black should have good chances to sucessfully simplify the position and equalise or very near to it.} )
    ( 9...Nbd7 10.Bh6 Bxh6 11.Qxh6 e5 {Again I will note that this may well be a bit dangerous. The problem is the combination of black having castled and that he doesn't necessarily have really desirable ways of getting the active white queen away from h6.} )
10.Bh6 
    ( 10.Qxb4!? {Is possibly critical and I am not quite sure what happens with absolute best play, although here is an example of what could happen.} 10...Nbd7 11.Qd2 c5 12.c3 e5!? 13.dxe5 dxe5 14.Be3!? c4 15.Bxc4 Nxe4 {(∞) to (＋/ = )} )
10...Nbd7 
    ( 10...Bxh6 11.Qxh6 Bxf3 12.gxf3 e5 {Is maybe playable.} )
    ( 10...Bxf3 11.gxf3 Nbd7 
        ( 11...Bxh6?! 12.Qxh6 Nbd7 13.f4 e5 14.Rg1 {Seems risky positionally.} )
    12.Bxg7 Kxg7 13.Qxb4 {Transposes to 10...Nbd7.} )
    ( 10...a5 {Transposes to 9...a5.} )
11.Bxg7 Kxg7 12.Qxb4 Bxf3 
    ( 12...c5!? )
13.gxf3 c5 14.Qd2 cxd4 15.Nxd4 Qb6 16.c3 e5 17.a5 Qb7 18.a6 Qb6 19.Nb5 Nc5 {(∞) If this is not just full compensation then at least white will have to work extremely hard to drive back black's generally well entrenched pieces and pawns.} *