SEATTLE — Rashid Shaheed returned the opening kickoff for a touchdown , Kenneth Walker III rushed for three scores and the Seattle Seahawks advanced to the NFC championship game with a dominant 41-6 victory over the San Francisco 49ers on Saturday night. Sam Darnold threw a touchdown pass and got his first career playoff win in his first season with the Seahawks (15-3), who will host either the Chicago Bears or the Los Angeles Rams next Sunday with a trip to the Super Bowl at stake. The