A  calm variation of the Grunfeld, where the onus is put on slow, lenghty  improvement of the pieces.
1. d2d4  1... g8f6  2. g1f3  2... g7g6  3. g2g3  3... f8g7  4. f1g2  4... d7d5  5. e1g1  5... e8g8  6. c2c4  6... c7c6  7. d1b3 