1. e2e4  1... e7e5  2. f1c4 The Bishop opening is often used to avoid the Petroff  Defense. 2... g8f6  3. d2d3  3... c7c6  4. g1f3  4... d7d5  5. c4b3  5... a7a5  6. a2a4  6... f8b4 One of the good continuations for Black. Ju deprives the  opponent's knight of the c3 square. 7. c2c3 