In your game against hooks515 (1220565), you left his lone king nowhere to go after 75.Qc6 so the game was drawn. If you replay the game from either "Game History" or "Analysis Board" screens from before your 75th move, consider playing 75.Qa7..then if he had replied 75...Ke8, 76.Qe7/Qa8/Qb8 lead to checkmate. If instead after 75.Qa7 he had played 75...Kc8, then 76.Kd6 (NOT 76.Ke7 which is stalemate again!) leaves him only 76.Kd8, which allows you any of 77. Qd7/Qa8/Qb8 all lead again to checkmate. Hope this is useful for you.