Getting ready to capture on c3 with the knight, where it will be well placed.
1. d2d4  1... g8f6  2. c2c4  2... e7e6  3. b1c3  3... f8b4  4. e2e3  4... e8g8  5. c1d2  5... c7c5  6. a2a3  6... b4c3  7. d2c3  7... f6e4 [%c_effect e4;square;e4;type;GreatFind;persistent;true] It's necessary to capture White's bishop while there's still time, otherwise the pair of bishops guarantees a lasting positional advantage.