Hi.
Been contemplating how to play this as black:
1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.Bg5 c6 5.Qd2Pirc Litterature does not give an abundance of ideas. This is what is covered basically:
The Ultimate Pirc (1998):
4.Bg5 c6 5.Qd2 b5 without the reply
6.e5 and brief coverage of
4.Bg5 c6 5.Qd2 Nbd7Pirc Alert (2001):
4.Bg5 Bg7 Only.
Vidéki's The Pirc Defence (2002):
4.Bg5 c6 5.Qd2 b5 without the reply
6.e5the Pirc in Black and White (2007):
4.Bg5 c6 5.Qd2 b5Chess developents the Pirc (2012):
4.Bg5 c6 5.Qd2 b5 without the reply
6.e5The Perfect Pirc-Modern (2013):
4.Bg5 c6 5.Qd2 b5 without the reply
6.e5.
The Pirc move by move (2016):
4.Bg5 Bg7 Only.
Some also cover
4.Bg5 c6 5.Qd2 Bg7 6.Bh6 (through various move orders).
And of course there is GM Shaw - Playing 1.e4 (2016) who does cover
4.Bg5 c6 5.Qd2 b5 6.e5 substantially and well (though he does not cover alternate black fifth moves, 5...Bg7 excluded).
Where does that leave us then?
Basically there seems to be a significant leaning towards
4.Bg5 c6 5.Qd2 b5, only
6.e5 has not been taken seriously thus far. Of the above books Vigus does best (anyone surprised?

) actually covering
6.e5; although Shaw's suggestion probably just improves over the line Vigus gives.
So we have:
1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.Bg5 c6 5.Qd2 b5 (The line in Pirc litterature and one which Shaw recently tried to show deficiencies in after 6.e5)
1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.Bg5 c6 5.Qd2 Bg7 (Given in various Pirc litterature as an alternative to the 5...b5 line)
1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.Bg5 c6 5.Qd2 Nbd7 (Mentioned once in Pirc litterature)
And that is it.
Knowing not many lines are actually covered in Pirc litterature a natural question is to ask if there are alternatives to the above lines, which have not received coverage thus far. From what I can see the following moves have been played (popularity order):
1
.e4 d6 2.d4 Nf6 3.Nc3 g6 4.Bg5 c6 5.Qd2 h6 (Played but also previously mentioned in the thread - #30)
1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.Bg5 c6 5.Qd2 Qa51.e4 d6 2.d4 Nf6 3.Nc3 g6 4.Bg5 c6 5.Qd2 Qb6Of course chess is about thinking and it would disappointing to miss some nice move for lack of this. So is it possible to think of more moves? Somewhat not entirely out of place looks to me the following:
1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.Bg5 c6 5.Qd2 Qc71.e4 d6 2.d4 Nf6 3.Nc3 g6 4.Bg5 c6 5.Qd2 Na61.e4 d6 2.d4 Nf6 3.Nc3 g6 4.Bg5 c6 5.Qd2 a51.e4 d6 2.d4 Nf6 3.Nc3 g6 4.Bg5 c6 5.Qd2 e6Listed above are certainly a handful of black fifth moves, though is any of them attractive enough to form a repertoire around? I don't know but I can say that of all the moves listed (including 5...b5 and 5...Bg7 played hundreds of times) there is only one which I think
is good Edit:
has potential enough to be used as repertoire staple.
Some day I will elaborate and post some analysis. Until then.
Have a nice day.