[%c_effect e7;square;e7;type;GreatFind;persistent;true]
1. d2d4  1... g8f6  2. c2c4  2... e7e6  3. g1f3  3... d7d5  4. g2g3  4... d5c4  5. f1g2  5... c7c6 Only the sixth most popular move, but even so, it still has more than a thousand games played. The Catalan is a huge opening. 6. f3e5  6... f8b4  7. c1d2 