Some key differences between this match and the Lee Sedol one are:
1) Ke Jie has an estimation of Alpha Go's skill. Lee Sedol did not know how strong Alpha Go was. Lee Sedol was very skeptical that a bot could have reached such high level.
2) Ke Jie has been able to study a game where Alpha Go was beaten.
3) Ke Jie has been able to play Alpha Go before, with faster game settings.
>But after watching three matches, he said, “AlphaGo was perfect and made no mistake. If the conditions are the same, it is highly likely that I can lose.”
>“As AlphaGo learns endlessly, all human beings could be defeated in the near future,” Ke said on AlphaGo’s capabilities.
you could be certain or uncertain that your opponent is three stones stronger than you -- either way, your opponent is still three stones stronger than you :)
I think that's not a wise thing to do against a stronger player.
Stronger players actually start complicated fights to prevail through superior reading.
It is possible however to win like this against a stronger player, if you make effective use of time management... e.g: leave lots of aji, then force fights with complicated variations when the opponent has limited time (e.g: towards the end game) to force mistakes or winning by time. These tricks are informally known as "timesujis".
I thought a "timesuji" was a move that took advantage of the 30-seconds-per-move rule by having an obvious response and not affecting the overall board state. Like, playing inside a bamboo joint.
1) Ke Jie has an estimation of Alpha Go's skill. Lee Sedol did not know how strong Alpha Go was. Lee Sedol was very skeptical that a bot could have reached such high level.
2) Ke Jie has been able to study a game where Alpha Go was beaten.
3) Ke Jie has been able to play Alpha Go before, with faster game settings.