Walsh built a scheme that included short dropbacks and novel receiving routes, as well as constant repetition of every play in practice. Though it originated in Cincinnati, it became known many years later as the West Coast offense — a name Walsh never liked or repeated, but which eventually grew to encompass his offensive philosophy and the many tweaks added by Holmgren, Shanahan and others.

“He was a perfectionist,” said Keena Turner, a linebacker with the Niners for 11 years before going on to coach. “When writing his script, he didn’t believe that running the football was the way to get there. It had to be prettier than that — beautiful in some way.”

By the 1990s, much of the NFL was running some version of the West Coast offense, with its fundamental belief that the passing game can set up an effective running attack, rather than the opposite conventional wisdom.

Walsh also is widely credited with inventing or popularizing many of the modern basics of coaching, from the laminated sheets of plays held by coaches on almost every sideline, to the practice of scripting the first 15 offensive plays of a game.

After a bitter falling-out with Brown in 1976, Walsh left for stints with the San Diego Chargers and Stanford before the 49ers chose him to rebuild the franchise in 1979.

The long-suffering team had gone 2-14 before Walsh’s arrival. They repeated the record in his first season. Walsh doubted his abilities to turn around such a miserable situation — but earlier in 1979, the 49ers drafted quarterback Joe Montana from Notre Dame.

Walsh turned over the starting job to Montana in 1980, when the 49ers improved to 6-10 — and improbably, San Francisco won its first championship in 1981, just two years after winning two games.

Championships followed in the postseasons of 1984 and 1988 as Walsh built a consistent winner. He also showed considerable acumen in personnel, adding Ronnie Lott, Charles Haley, Roger Craig and Jerry Rice to his rosters after he was named the 49ers’ general manager in 1982 and then president in 1985.

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“I came to San Francisco, and I found another father, Bill Walsh,” Rice said. “He was always there for me, when I was dropping balls, doing everything, when the media were trying to crucify him, ’Why did you go draft this small college player out of Mississippi Valley State?’ He hung in there with me.”

Walsh left the 49ers with a profound case of burnout after his third Super Bowl victory in January 1989, though he later regretted not coaching longer.

He spent three years as a broadcaster with NBC before returning to Stanford for three seasons. He then took charge of the 49ers’ front office in 1999, helping to rebuild the roster over three seasons. But Walsh gradually cut ties with the 49ers after his hand-picked successor as GM, Terry Donahue, took over in 2001.

He is survived by his wife, Geri, and two children, Craig and Elizabeth.

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