1. d2d4  1... d7d5  2. c2c4  2... d5c4  3. e2e3  3... g8f6  4. f1c4  4... e7e6  5. g1f3  5... a7a6  6. e1g1  6... c7c5  7. c4e2 [%c_effect e2;square;e2;type;Interesting;persistent;true] Only the tenth most popular choice in this Queen's Gambit Accepted position, which shows how rich it is. White has the most diverse options, such as 7.a4, which was played by Botvinnik in the match against Petrosian, and the solid 7.dxc5, which was played by Kramnik in the match against Kasparov (he also played 7.a4 in one of the games), or the more ambitious 7.Bb3, which I played several times, among other moves.