Martirosyan  follows in the footsteps of his great countryman (well, soon-to-represent  the U.S.) Aronian.
1. d2d4  1... g8f6  2. c2c4  2... e7e6  3. b1c3  3... f8b4  4. e2e3  4... e8g8  5. c1d2  5... c7c5  6. a2a3 