[Event "Olympiad"] [Site "masterchessopen.com - Prague (Czech Republic)"] [Round "6"] [White "Christoffersen H"] [Black "Alekhine Alexander A (RUS)"] [Result "0-1"] [ECO "A47"] [Opening "Neo-Queen's Indian"] 1.d4 Nf6 2.Nf3 b6 3.g3 Bb7 4.Bg2 c5 5.O-O cxd4 6.Qxd4 Nc6 7.Qd1 g6 8.b3 Bg7 9.Bb2 O-O 10.c4 d5 11.cxd5 Nxd5 12.Bxg7 Kxg7 13.Nh4 e6 14.Na3 Qe7 15.Qc1 Nd4 16.Qb2 Qf6 17.Kh1 Ba6 18.Nc4 Rad8 19.e4 Nb4 20.e5 Qe7 21.Rfd1 Bxc4 22.bxc4 Qc5 23.Rac1 g5 24.a3 Nbc2 25.Nf3 Nxf3 26.Bxf3 Rxd1+ 27.Rxd1 Nxa3 28.Rc1 Nxc4 {#R} 0-1