1. e2e4  1... e7e5  2. g1f3  2... b8c6  3. f1c4  3... g8f6  4. d2d3  4... h7h6 Dubov's pet move with which he  won a few beautiful games last year (see below). 5. b1c3  5... f8b4  6. e1g1  6... b4c3  7. b2c3 