1. e2e4  1... e7e5  2. g1f3  2... g8f6  3. d2d4  3... f6e4  4. d4e5  4... d7d5  5. b1d2 A line that had a burst of popularity some 10 years ago, mainly thanks to the efforts of the  prominent Azerbaijani GM Vugar Gashimov. 5... e4d2  6. c1d2  6... f8e7  7. f1d3  7... c8g4  8. h2h3  8... g4h5  9. e1g1  9... b8d7 