Sure. Check out the "game of the century". There Go Seigen, the genius who brought about the Go revolution that Redmond talked about at post-game conf today, w

Sure. Check out the "game of the century". There Go Seigen, the genius who brought about the Go revolution that Redmond talked about at post-game conf today, was beaten by Honinbou Shusai + his students. Also, "lesser" pros routinely call out mistakes in master games (and the masters agree). Games are often decided by easily avoidable mistakes, even at the highest level.