[Comment "auto-generated from http://www.jesseo.com/chesspublishing/pgn.php?pgndata=[Event%20%26quot;Pirc%20Analysis%26quot;]%0A[Site%20%26quot;Byrne%20Variation%26quot;]%0A[Date%20%26quot;2016.01.01%26quot;]%0A[Round%20%26quot;?%26quot;]%0A[White%20%26quot;4.Bg5%26quot;]%0A[Black%20%26quot;Na6+c5%20idea%26quot;]%0A[Result%20%26quot;*%26quot;]%0A[EventDate%20%26quot;2016.01.01%26quot;]%0A%0A1.e4%20d6%202.d4%20Nf6%203.Nc3%20g6%204.Bg5%20c6%205.f4%20%0A%26nbsp;%20%26nbsp;%20(%205.Qd2%20Bg7%206.f4%20O-O%207.Bd3%20Na6%20%26%23123;Transposes%20to%20positions%20covered%20via%205.f4%20move%20order.%26%23125;%20)%0A5...Bg7%206.Qd2%20O-O%207.Bd3%20Na6%208.Nf3%20c5%209.d5%20c4%2010.Bxc4%20Nc5%2011.Bxf6%20%0A%26nbsp;%20%26nbsp;%20(%2011.Bd3%20Qb6%20%0A%26nbsp;%20%26nbsp;%26nbsp;%20%26nbsp;%26nbsp;%20(%2011...b5!?%20)%0A%26nbsp;%20%26nbsp;%20)%0A11...Bxf6%20%0A%26nbsp;%20%26nbsp;%20(%2011...exf6!?%20)%0A12.e5%20Bg7%2013.O-O-O%20a6%2014.Be2%20%0A%26nbsp;%20%26nbsp;%20(%2014.Rhe1%20b5%2015.Bf1%20Bg4%20)%0A14...b5%2015.Qe3%20Qc7%20*%0A"]
[Event "Pirc Analysis"]
[Site "Byrne Variation"]
[Date "2016.01.01"]
[Round "?"]
[White "4.Bg5"]
[Black "Na6+c5 idea"]
[Result "*"]
[EventDate "2016.01.01"]

1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.Bg5 c6 5.f4 
    ( 5.Qd2 Bg7 6.f4 O-O 7.Bd3 Na6 {Transposes to positions covered via 5.f4 move order.} )
5...Bg7 6.Qd2 O-O 7.Bd3 Na6 8.Nf3 c5 9.d5 c4 10.Bxc4 Nc5 11.Bxf6 
    ( 11.Bd3 Qb6 
        ( 11...b5!? )
    )
11...Bxf6 
    ( 11...exf6!? )
12.e5 Bg7 13.O-O-O a6 14.Be2 
    ( 14.Rhe1 b5 15.Bf1 Bg4 )
14...b5 15.Qe3 Qc7 *