Punish Hane with Hane - L+1group+one Hane part 2 (Chapter 5-6)
9:38
Is two Hane's alive? - L+1group+ two Hane's (Chapter 7)
23:39
Breakthrough brilliance - Shin Jin Seo VS Ke Jie
13:00
Typical mistake - Don't make this mistake! (New book)
22:04
The Genius Way Computers Multiply Big Numbers
16:48
Timeless Language Learning Method that actually works
10:42
Don't waste a move - Exchanging a hane saves the corner (Chapter 36)
13:30
What is the difference between A and B?- Step by step chapter 45-46
26:12