 In some sense a tribute to Kasparov, who mentored both Nakamura and  Carlsen at phases of their chess development. The 13th world champion  successfully implemented the QGD in his first matches against his great  predecessor on the throne, A. Karpov.
1. d2d4  1... g8f6  2. c2c4  2... e7e6  3. g1f3  3... d7d5  4. b1c3  4... f8e7  5. c1f4  5... e8g8  6. e2e3  6... c7c5  7. d4c5 