Hopes for a third straight NFC West championship are now dead and buried for the 49ers.The streaking 10-1 Seahawks and the up-and-down Niners – who at 6-4 now have only two more wins than their across-the-bay cousins in Oakland – have made that a certainty.But even though the 49ers have now lost a second straight game and still not proven they can beat an elite team this season, it doesn't mean San Francisco's season is over. Far from it.As the 49ers prepare for their final six games, beginning with a matchup against the 3-7 Washington Redskins on "Monday Night Football" Nov. 25, the schedule is in the 49ers' favor. The 49ers are 4-0 this season against teams with losing records and 2-4 vs. winning teams. If that form holds, the 49ers would go 4-2 to give them a 10-6 record. Up next, in order, are the Redskins (3-7), Rams (4-6), Seahawks (10-1), Bucs (2-8), Falcons (2-8) and Cardinals (6-4).The key game might be the final regular-season game of the season, on Dec. 29, when the Niners visit the Arizona Cardinals. A victory in Arizona, and an 11-5 mark, might be the key to get into the playoffs as one of the NFC's two wild-card teams.But, it will be a tight race. Among...