[%c_effect a3;square;a3;type;GreatFind;persistent;true] I played this position with White back in 1997, when I wasn't even a grandmaster. I remember spending hours one afternoon analyzing this position with my coach at the time, GM Gilberto Milos.
1. d2d4  1... g8f6  2. c2c4  2... e7e6  3. b1c3  3... f8b4  4. d1c2  4... e8g8  5. e2e4  5... c7c5 [%c_effect c5;square;c5;type;Interesting;persistent;true] A risky move. Black's most reputable move is 5...d5, with long forced lines that usually lead to a draw. Aronian is a very creative player, and sometimes he shows interesting and deep ideas in the opening. 6. e4e5  6... c5d4 