Chess: Understanding the Sicilian Defense (Najdorf Variation) Part XIII
1 e4 c5 2 Nf3 d6 3 d4 cxd4 4 Nxd4 Nf6 5 Nc3 a6
6 Bg5 Nbd7 7 Qe2 e6 8 O-O-O b5 9 a3 h6 10 Bh4 Bb7
11 f4 Qc7 12 g4 Be7 13 Be1 g6 14 f5 e5 15 Nb3 O-O-O
16 Bg2 Nc5 17 Nxc5 dxc5 18 Bg3 Rhe8 19 h4 b4
20 axb4 cxb4 21 Rxd8+ Rxd8 22 Nd5 Nxd5 23 exd5
23 ... Bxd5 24 f6 Bc4 25 Qf3 Line

For explanations of moves 1 through 6 please
refer to Chess: Understanding the Sicilian
Defense (Najdorf Variation) Part I
1 e4 c5 2 Nf3 d6 3 d4 cxd4 4 Nxd4 Nf6 5 Nc3 a6
6 Bg5 Nbd7:

7 Qe2

7 Bc4
7 f4
7 Qf3
7 Qd2
7 Be2
7 a4
7 Bd3 Qb6 8 Nb3 e6 9 O-O Be7 10 Be3 Qc7.
7 Bd3 e6 8 O-O Nc5 9 Qf3 Be7 10 Rfe1 O-O.
7 ... e6

7 ... h6
7 ... g6
8 O-O-O

8 f4
8 ... b5

8 ... Be7
8 ... Qc7
9 a3

9 Qe3
9 f4
9 Nb3
9 ... h6

9 ... Bb7
9 ... Qb6
10 Bh4

10 Be3
10 Bd2
10 ... Bb7

10 ... Qc7
10 ... Qb6
11 f4

11 Qe1
11 g4
11 Rd3
11 Qe1
11 Qf3
11 ... Qc7

11 ... Be7
11 ... Qb6
12 g4

12 f5
12 Re1
12 ... Be7

12 ... d5
12 ... Rc8
12 ... O-O-O
13 Be1

13 Bg2
13 Rg1
13 ... g6

13 ... Rc8
13 ... Qc4
14 f5

14 Bg2
14 Kb1
14 ... e5

14 ... Nc5
14 ... gxf5
15 Nb3

15 Nf3
15 ... O-O-O

15 ... gxf5
16 Bg2

16 Bd2
16 Nd5
16 ... Nc5

16 ... gxf5
16 ... Rdg8
17 Nxc5

17 Kb1
17 ... dxc5

17 ... Qxc5
18 Bg3

18 Nd5
18 ... Rhe8

18 ... Rd4
18 ... Bd6
18 ... Rxd1+
18 ... Rhg8
18 ... Kb8
19 h4

19 fxg6
19 ... b4

19 ... Rxd1+
19 ... Bd6
19 ... Rd4
20 axb4

20 Rxd8+
20 ... cxb4

20 ... Rxd1+
21 Rxd8+

21 Nd5
21 ... Rxd8

21 ... Bxd8
22 Nd5

22 Nb1
22 ... Nxd5

22 ... Qd6
23 exd5

23 ... Bxd5

23 ... Bd6
23 ... Qa5
24 f6

24 fxg6
24 ... Bc4

24 ... Bxf6
25 Qf3

25 Qe4
By ChessCoach@care2.com
6 Bg5 Nbd7 7 Qe2 e6 8 O-O-O b5 9 a3 h6 10 Bh4 Bb7
11 f4 Qc7 12 g4 Be7 13 Be1 g6 14 f5 e5 15 Nb3 O-O-O
16 Bg2 Nc5 17 Nxc5 dxc5 18 Bg3 Rhe8 19 h4 b4
20 axb4 cxb4 21 Rxd8+ Rxd8 22 Nd5 Nxd5 23 exd5
23 ... Bxd5 24 f6 Bc4 25 Qf3 Line

For explanations of moves 1 through 6 please
refer to Chess: Understanding the Sicilian
Defense (Najdorf Variation) Part I
1 e4 c5 2 Nf3 d6 3 d4 cxd4 4 Nxd4 Nf6 5 Nc3 a6
6 Bg5 Nbd7:

7 Qe2

7 Bc4
7 f4
7 Qf3
7 Qd2
7 Be2
7 a4
7 Bd3 Qb6 8 Nb3 e6 9 O-O Be7 10 Be3 Qc7.
7 Bd3 e6 8 O-O Nc5 9 Qf3 Be7 10 Rfe1 O-O.
7 ... e6

7 ... h6
7 ... g6
8 O-O-O

8 f4
8 ... b5

8 ... Be7
8 ... Qc7
9 a3

9 Qe3
9 f4
9 Nb3
9 ... h6

9 ... Bb7
9 ... Qb6
10 Bh4

10 Be3
10 Bd2
10 ... Bb7

10 ... Qc7
10 ... Qb6
11 f4

11 Qe1
11 g4
11 Rd3
11 Qe1
11 Qf3
11 ... Qc7

11 ... Be7
11 ... Qb6
12 g4

12 f5
12 Re1
12 ... Be7

12 ... d5
12 ... Rc8
12 ... O-O-O
13 Be1

13 Bg2
13 Rg1
13 ... g6

13 ... Rc8
13 ... Qc4
14 f5

14 Bg2
14 Kb1
14 ... e5

14 ... Nc5
14 ... gxf5
15 Nb3

15 Nf3
15 ... O-O-O

15 ... gxf5
16 Bg2

16 Bd2
16 Nd5
16 ... Nc5

16 ... gxf5
16 ... Rdg8
17 Nxc5

17 Kb1
17 ... dxc5

17 ... Qxc5
18 Bg3

18 Nd5
18 ... Rhe8

18 ... Rd4
18 ... Bd6
18 ... Rxd1+
18 ... Rhg8
18 ... Kb8
19 h4

19 fxg6
19 ... b4

19 ... Rxd1+
19 ... Bd6
19 ... Rd4
20 axb4

20 Rxd8+
20 ... cxb4

20 ... Rxd1+
21 Rxd8+

21 Nd5
21 ... Rxd8

21 ... Bxd8
22 Nd5

22 Nb1
22 ... Nxd5

22 ... Qd6
23 exd5

23 ... Bxd5

23 ... Bd6
23 ... Qa5
24 f6

24 fxg6
24 ... Bc4

24 ... Bxf6
25 Qf3

25 Qe4
By ChessCoach@care2.com