[Event "C60"] [Site "Cleanchess.com IECG, Cat-D corr"] [Round "154"] [White "Allwardt, David Lawrence"] [Black "Mattison, Herman"] [Result "1-0"] [BlackElo "2510"] [ECO "C60"] [Opening "Spanish: Cozio, 4.O-O"] 1.e4 e5 2.Nf3 Nc6 3.Bb5 Nge7 4.O-O d5 5.Nc3 Bd7 6.d3 d4 7.Nd5 a6 8.Bc4 f5 9.Qe1 g6 10.Bg5 h6 11.Nf6# 1-0