A10 - A19

------------------------------------ A10 ------------------------------------

A10 English opening

1.c2c4

   A10 English opening

   1.c2c4 g7g6

      A10 English: Adorjan defence

      1.c2c4 g7g6 e2e4 e7e5

   A10 English: Jaenisch gambit

   1.c2c4 b7b5

   A10 English: Anglo-Dutch defense

   1.c2c4 f7f5

------------------------------------ A11 ------------------------------------

A11 English: Caro-Kann defensive system

1.c2c4 c7c6

------------------------------------ A12 ------------------------------------

A12 English: Caro-Kann defensive system

1.c2c4 c7c6 g1f3 d7d5 b2b3

   A12 English: Torre defensive system

   1.c2c4 c7c6 g1f3 d7d5 b2b3 g8f6 g2g3 c8g4

   A12 English: London defensive system

   1.c2c4 c7c6 g1f3 d7d5 b2b3 g8f6 g2g3 c8f5

   A12 English: Caro-Kann defensive system

   1.c2c4 c7c6 g1f3 d7d5 b2b3 g8f6 c1b2

      A12 English: Bled variation

      1.c2c4 c7c6 g1f3 d7d5 b2b3 g8f6 c1b2 g7g6

      A12 English: New York (London) defensive system

      1.c2c4 c7c6 g1f3 d7d5 b2b3 g8f6 c1b2 c8f5

      A12 English: Capablanca's variation

      1.c2c4 c7c6 g1f3 d7d5 b2b3 g8f6 c1b2 c8g4

   A12 English: Caro-Kann defensive system, Bogolyubov variation

   1.c2c4 c7c6 g1f3 d7d5 b2b3 c8g4

------------------------------------ A13 ------------------------------------

A13 English opening

1.c2c4 e7e6

   A13 English: Romanishin gambit

   1.c2c4 e7e6 g1f3 g8f6 g2g3 a7a6 f1g2 b7b5

   A13 English opening: Agincourt variation

   1.c2c4 e7e6 g1f3 d7d5

      A13 English: Wimpey system

      1.c2c4 e7e6 g1f3 d7d5 b2b3 g8f6 c1b2 c7c5 e2e3

      A13 English opening: Agincourt variation

      1.c2c4 e7e6 g1f3 d7d5 g2g3

         A13 English: Kurajica defence

         1.c2c4 e7e6 g1f3 d7d5 g2g3 c7c6

         A13 English: Neo-Catalan

         1.c2c4 e7e6 g1f3 d7d5 g2g3 g8f6

            A13 English: Neo-Catalan accepted

            1.c2c4 e7e6 g1f3 d7d5 g2g3 g8f6 f1g2 d5c4

------------------------------------ A14 ------------------------------------

A14 English: Neo-Catalan declined

1.c2c4 e7e6 g1f3 d7d5 g2g3 g8f6 f1g2 f8e7 e1g1

   A14 English: Symmetrical, Keres defence

   1.c2c4 e7e6 g1f3 d7d5 g2g3 g8f6 f1g2 f8e7 e1g1 c7c5 c4d5 f6d5 b1c3 b8c6

------------------------------------ A15 ------------------------------------

A15 English, 1...Nf6 (Anglo-Indian defense)

1.c2c4 g8f6

   A15 English orang-utan

   1.c2c4 g8f6 b2b4

   A15 English opening

   1.c2c4 g8f6 g1f3

------------------------------------ A16 ------------------------------------

A16 English opening

1.c2c4 g8f6 b1c3

   A16 English: Anglo-Gruenfeld defense

   1.c2c4 g8f6 b1c3 d7d5

      A16 English: Anglo-Gruenfeld, Smyslov defense

      1.c2c4 g8f6 b1c3 d7d5 c4d5 f6d5 g2g3 g7g6 f1g2 d5c3

      A16 English: Anglo-Gruenfeld, Czech defense

      1.c2c4 g8f6 b1c3 d7d5 c4d5 f6d5 g2g3 g7g6 f1g2 d5b6

      A16 English: Anglo-Gruenfeld defense

      1.c2c4 g8f6 b1c3 d7d5 c4d5 f6d5 g1f3

         A16 English: Anglo-Gruenfeld defense, Korchnoi variation

         1.c2c4 g8f6 b1c3 d7d5 c4d5 f6d5 g1f3 g7g6 g2g3 f8g7 f1g2 e7e5

------------------------------------ A17 ------------------------------------

A17 English opening

1.c2c4 g8f6 b1c3 e7e6

   A17 English: Queens Indian formation

   1.c2c4 g8f6 b1c3 e7e6 g1f3 b7b6

      A17 English: Queens Indian, Romanishin variation

      1.c2c4 g8f6 b1c3 e7e6 g1f3 b7b6 e2e4 c8b7 f1d3

   A17 English: Nimzo-English opening

   1.c2c4 g8f6 b1c3 e7e6 g1f3 f8b4

------------------------------------ A18 ------------------------------------

A18 English: Mikenas-Carls variation

1.c2c4 g8f6 b1c3 e7e6 e2e4

   A18 English: Mikenas-Carls, Flohr variation

   1.c2c4 g8f6 b1c3 e7e6 e2e4 d7d5 e4e5

   A18 English: Mikenas-Carls, Kevitz variation

   1.c2c4 g8f6 b1c3 e7e6 e2e4 b8c6

------------------------------------ A19 ------------------------------------

A19 English: Mikenas-Carls, Sicilian variation

1.c2c4 g8f6 b1c3 e7e6 e2e4 c7c5