Chess: Pirc Defense (Austrian Attack)

1 e4 d6 2 d4 Nf6 3 Nc3 g6 4 f4 Bg7 5 Nf3 c5
6 Bb5+ Bd7 7 e5 Ng4 8 e6 Bxb5 9 exf7+ Kf8
10 Nxb5 Qa5+ 11 Nc3 cxd4 12 Nxd4 Kxf7
13 O-O Line

1 e4 d6 2 d4 Nf6 3 Nc3 g6 4 f4:



E-Four To E-Five: Envy Of Eden!

4 ... Bg7



4 ... a6
4 ... c6
4 ... d5
4 ... Bh6

5 Nf3



5 a3
5 e5
5 Bc4
5 Bd3
5 Be2
5 Be3

Most generally, White wants to first complete
mobilization via Bd3/O-O or Be3/Qd2/O-O-O
so as to push e4-e5 with absolute luxury.



5 e5 is not too threatening because of:

5 ... Nfd7 6 Nf3 c5 7 dxc5 dxe5 8 fxe5 Nxe5
9 Qxd8+ Kxd8 10 Nxe5 Bxe5 11 Ne4 f6 12 c3 Be6
13 Be3 Nc6 14 Nd2 Kc7.



5 Bd3 permits Black to exploit the unprotected
d4 pawn to his advantage:

5 ... Nc6 6 d5 Nb4 7 Be2 c6 8 a3 Qa5 9 Be3 Nxe4
10 axb4.
5 ... Nc6 6 Nf3 d5 7 e5 Ng4 8 O-O O-O 9 h3 Nh6
10 g4 Nb4 11 f5.
5 ... Nc6 6 Nf3 Nb4 7 Be2 d5 8 e5 Ne4 9 a3 Nxc3.



5 Bd3 permits Black to exploit the unprotected
d4 pawn to his advantage:

5 ... Nc6 6 Nf3 Bg4 7 e5 Bxf3 8 gxf3 Nh5 9 Be3 e6
10 h4 O-O 11 Qd2 dxe5 12 dxe5 Nb4 13 O-O-O.
5 ... Nc6 6 Nf3 Bg4 7 d5 Nd4 8 Be3 Nd7 9 O-O c6
10 Qd2 Nxf3+ 11 gxf3 Bh3 12 Rfe1 Nf6 13 dxc6.
5 ... Nc6 6 Nf3 Bg4 7 Be3 e5 8 dxe5 dxe5 9 Bb5
9 ... exf4 10 Qxd8+ Rxd8 11 Bxc6+ bxc6 12 Bxf4 O-O
13 h3.

5 ... c5



5 ... c6
5 ... Bg4
5 ... Na6
5 ... Nbd7
5 ... Nc6
5 ... O-O



The intention: 5 ... c5 6 dxc5 Qa5 7 Bd3 Qxc5
8 Qe2 O-O 9 Be3 Qa5 10 O-O Bg4 11 h3 Bxf3
12 Qxf3 Nc6 13 a3 Nd7 14 Bd2 Qb6+ 15 Kh1 Nc5
16 Rab1 Nxd3 17 cxd3 f5 18 g4 e6 19 gxf5 exf5
20 Nd5 Qb3 21 Bc3 Rae8 22 Qg2 Ne7 23 Bxg7
23 ... Kxg7 24 Nc7 Rc8 25 Rbc1 Nc6 26 Rc3.
5 ... c5 6 dxc5 Qa5 7 Bd3 Qxc5 8 dxe7 Nxc3
9 bxc3 Bxc3+ 10 Bd2 Nc6 11 Rb1 Nxe7 12 Bb5+.



5 ... c5 6 dxc5 Qa5 7 cxd6 Nxe4 8 Bd2 Nxc3
9 Bxc3 Bxc3+ 10 bxc3 Qxc3+ 11 Kf2 Qc5+
12 Qd4 exd6.

The routine 5 ... O-O leads to complicated
opportunities for Black.