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English symmetrical variation  A30-A39

------------------------------------ A30 ------------------------------------

A30 English: symmetrical variation

1.c2c4 c7c5

   A30 English: symmetrical, hedgehog system

   1.c2c4 c7c5 g1f3 g8f6 g2g3 b7b6 f1g2 c8b7 e1g1 e7e6 b1c3 f8e7

      A30 English: symmetrical, hedgehog, flexible formation

      1.c2c4 c7c5 g1f3 g8f6 g2g3 b7b6 f1g2 c8b7 e1g1 e7e6 b1c3 f8e7 d2d4 c5d4

        d1d4 d7d6 f1d1 a7a6 b2b3 b8d7

------------------------------------ A31 ------------------------------------

A31 English: symmetrical, Benoni formation

1.c2c4 c7c5 g1f3 g8f6 d2d4

------------------------------------ A32 ------------------------------------

A32 English: symmetrical variation

1.c2c4 c7c5 g1f3 g8f6 d2d4 c5d4 f3d4 e7e6

------------------------------------ A33 ------------------------------------

A33 English: symmetrical variation

1.c2c4 c7c5 g1f3 g8f6 d2d4 c5d4 f3d4 e7e6 b1c3 b8c6

   A33 English: symmetrical, Geller variation

   1.c2c4 c7c5 g1f3 g8f6 d2d4 c5d4 f3d4 e7e6 b1c3 b8c6 g2g3 d8b6

------------------------------------ A34 ------------------------------------

A34 English: symmetrical variation

1.c2c4 c7c5 b1c3

   A34 English: symmetrical, three knights system

   1.c2c4 c7c5 b1c3 g8f6 g1f3 d7d5 c4d5 f6d5

   A34 English: symmetrical variation

   1.c2c4 c7c5 b1c3 g8f6 g2g3

      A34 English: symmetrical, Rubinstein system

      1.c2c4 c7c5 b1c3 g8f6 g2g3 d7d5 c4d5 f6d5 f1g2 d5c7

------------------------------------ A35 ------------------------------------

A35 English: symmetrical variation

1.c2c4 c7c5 b1c3 b8c6

   A35 English: symmetrical, four knights system

   1.c2c4 c7c5 b1c3 b8c6 g1f3 g8f6

------------------------------------ A36 ------------------------------------

A36 English: symmetrical variation

1.c2c4 c7c5 b1c3 b8c6 g2g3

   A36 English: ultra-symmetrical variation

   1.c2c4 c7c5 b1c3 b8c6 g2g3 g7g6 f1g2 f8g7

      A36 English: symmetrical, Botvinnik system reversed

      1.c2c4 c7c5 b1c3 b8c6 g2g3 g7g6 f1g2 f8g7 e2e3 e7e5

      A36 English: symmetrical, Botvinnik system

      1.c2c4 c7c5 b1c3 b8c6 g2g3 g7g6 f1g2 f8g7 e2e4

------------------------------------ A37 ------------------------------------

A37 English: symmetrical variation

1.c2c4 c7c5 b1c3 b8c6 g2g3 g7g6 f1g2 f8g7 g1f3

   A37 English: symmetrical, Botvinnik system reversed

   1.c2c4 c7c5 b1c3 b8c6 g2g3 g7g6 f1g2 f8g7 g1f3 e7e5

------------------------------------ A38 ------------------------------------

A38 English: symmetrical variation

1.c2c4 c7c5 b1c3 b8c6 g2g3 g7g6 f1g2 f8g7 g1f3 g8f6

   A38 English: symmetrical, main line with d3

   1.c2c4 c7c5 b1c3 b8c6 g2g3 g7g6 f1g2 f8g7 g1f3 g8f6 e1g1 e8g8 d2d3

   A38 English: symmetrical, main line with b3

   1.c2c4 c7c5 b1c3 b8c6 g2g3 g7g6 f1g2 f8g7 g1f3 g8f6 e1g1 e8g8 b2b3

------------------------------------ A39 ------------------------------------

A39 English: symmetrical, main line with d4

1.c2c4 c7c5 b1c3 b8c6 g2g3 g7g6 f1g2 f8g7 g1f3 g8f6 e1g1 e8g8 d2d4