abcdefgh87654321
1.c4 c5 2.Nf3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nc3 e6 6.e3 Nge7 7.d4 cxd4 8.Nxd4 d5 9.cxd5 Nxd5 10.Nxd5 Nxd4 11.exd4 exd5 12.O-O