AlphaGo will be playing against a top Korean player, Lee Se-dol, in March. Lee is a 9 dan player (highest tier) whereas Fan Hui was only a 2 dan. AlphaGo beat Fan 5-0 so it's hard to tell how good of a player it is in comparison. I'm very interested in seeing the results of the next match.
Note: There seems to be some misreporting on the rank of Lee Se-dol on some American news sites. He's definitely a top Korean and world player, but I don't think he's #1 right now. Someone else is welcome to correct me on this.
Agreed, while Lee Se-dol is one of the strongest player of the 21st century, he is at the moment being superseded by Lee Changho.
In Korea though (the strongest nation at Go right now), there are five"official top tournaments", so is difficult to say who is on top...
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