1. e2e4  1... e7e5  2. g1f3  2... b8c6  3. d2d4  3... e5d4  4. f3d4  4... f8b4 This move also has considerable theory, but is played much less often than the two main lines with 4...Bc5 and 4...Nf6. 5. c2c3  5... b4c5  6. d4f5 [%c_effect f5;square;f5;type;Mistake;persistent;true] 6... d7d6 [%c_effect d6;square;d6;type;Interesting;persistent;true] Black already has several interesting options.