Lee Sedol's Move 78 in Game 4 was assigned roughly a one-in-10,000 probability, is described by DeepMind as God's Touch, and helped Sedol defeat AlphaGo.

Format Web Page

Location PART 3 - THE THIRD AXIS CHAPTER 12: DARK INFORMATION Move 78

"Lee Sedol’s Move 78 in Game 4 was assigned roughly a one-in-10,000 probability, is described by DeepMind as God’s Touch, and helped Sedol defeat AlphaGo."

DeepMind explicitly presents Sedol's Move 78 as just as unlikely and inventive as AlphaGo's Move 37 and credits it with helping Sedol win Game 4.

Source title AlphaGo

Source authors Google DeepMind

Source year 2026

Confidence high

Importance high