1. e2e4  1... c7c5  2. d2d4 The Morra Gambit is a popular weapon with amateurs around the world. Grandmasters are a little more skeptical, but they also like to have fun from time to time. 2... c5d4  3. c2c3  3... d4d3 [%c_effect d3;square;d3;type;Inaccuracy;persistent;true] It has been said, wisely in my opinion, that the only way to refute a gambit is to accept it. In blitz games, however, practical considerations are more important than scientific ones, so Dudin was maybe looking for a position that was easier to play, even if worse. 4. f1d3 White now gets free development and will have the chance to get a \"Maroczy\" structure, with pawns on e4 and c4, and a small advantage. 4... b8c6  5. g1f3  5... d7d6 