1. e2e4  1... e7e5  2. g1f3  2... g8f6  3. d2d4  3... f6e4  4. d4e5  4... f8c5  5. f1c4 [%c_effect c4;square;c4;type;GreatFind;persistent;true] The most dangerous move, although 7.Qd5 is also possible. 5... e4f2  6. c4f7  6... e8f7  7. d1d5  7... f7g6 