1. d2d4  1... d7d5  2. c2c4  2... e7e6  3. b1c3  3... f8b4  4. g1f3  4... d5c4  5. e2e3  5... b7b5  6. a2a4  6... c7c6  7. c1d2  7... a7a5  8. a4b5  8... b4c3  9. d2c3  9... c6b5  10. b2b3  10... c8b7  11. b3c4  11... b5b4  12. c3b2  12... g8f6 The Noteboom variation is considered very risky for Black from a positional point of view. He gives  away the center almost completely and surrenders the bishop pair. But in  return he gets a nice pair of advanced passers, controls the long  diagonal, and if he is not mated in the middlegame, he might well be able  to promote those passers. All in all a risky, double-edged opening with  excellent winning chances for both sides. 13. f1d3  13... e8g8  14. e1g1  14... b8d7  15. f3d2 One idea now is to prepare c4-c5 followed by Nd2-c4 and eventually  Nc4-d6. Another one is to start rolling the kingside pawns. The drawback  of the move is, however, that it loses control of the central e5-square. 15... e6e5 It is mandatory to block the white pawns.