Unless you've received different advice (these things are field specific), I would put hours per week or total hours or some similar measure next to those so that prospective employers get a sense of how serious your time commitment was.

[..]

I can't imagine an employer wanting that information. [..]

I can't imagine an employer wanting that information. If I saw the number of hours on a resume, I would consider it bizarre. I absolutely would not include it unless you've heard that it would be expected in your particular field (I'd say by that particular employer). Note that I'm in the U.S., so cultural differences may vary. But if you aren't obligated to put it on your resume at all, I can't see how you'd be asked for the number of hours. Also, what number would you use? An average? Does that mean you'd need to update it if it changed? Does the time spent fluctuate certain times of year? I'd let it be assumed that it won't interfere with your work (unless you expect it to).

So I kind of sneak the topic in there in the small chance that someone is interested in go. Otherwise, I feel that it blends in with the rhetoric that says, "I like programming. I like math. I like solving problems."---You should go with your personal feeling on your resume, though, because you know yourself best. In my own case, though, I find it highly useful to think about the message that each part of the resume is conveying. Even the font you use says something about you - well, the you that you portay - to the person reading your resume.

I would remove the bullet about tournament wins...

Give me one name, not two. Yes, I can see that you are Korean, because you are sitting on the other side of the desk, but I probably don't care.
If I am curious about your Korean name, I'll ask. But otherwise, keep it simple for me. Use one name, preferably one that I can pronounce. Don't give me a chance to embarrass myself by trying to pronounce your name and doing it badly. I'll irrationally resent you for my failing.

Switch the employer heading and job heading. Make the job the more prominent of the two. My primary concern is what you did, not where you did it, because I am wondering what you can do for me.
Unless you worked for something really prestigious, like the Rand corp, don't feature it. Remember, to me, my company is the most important one in the world. I don't care about the others. I have a limited attention span. Don't bury me in details that I don't need.

Get rid of the Asian characters ( unless the job requires knowing another language. ) One of my biggest problems with employees – after those who drink/drug on the job, and those who steal – is those who cannot communicate. Don't leave me wondering if you think that writing in foreign characters is a way to communicate with me.

Skip the paragraph about go. I've never heard of it, and I have no idea how complex it is, so I won't be suitably impressed by your accomplishments. All this tells me is that you play games. Games are for kids. I already have employees who play games, and they do it on company time, and I hate that.

GPA?? Unless is it really high, get rid of it. If you mean 3.0 on a 4.0 scale, I'm not impressed. Lots of your competitors will have numbers better than that. Don't give me an easy way to compare you to them unless you will come out ahead in the comparison.

Kifu? WTF is a kifu? Again, show me that you can communicate. Either I have to admit that I don't know something - which makes me look bad, or I have to assume that you are a poor communicator. Both are bad for you.
Label it 'board game recognition program', and tell me that it 'Generates a digital game record from a scanned image.' If I care about board games like go or chess, I'll ask which game.

About the visual layout: remember that my eyes are NOT like a 20-something's eyes. I need more white space. And I resent the fact that you youngsters can see better than I, so when I have trouble reading your resume, I'll resent you for making me feel old. Use the room saved by eliminating the paragraph about teaching go, and spread it between the other sections.
Also, as I said, I want people who can communicate, and sometimes that will mean communicating in writing.

Lastly, keep in mind that I have at least twenty applicants for every position – maybe several hundred. I can't possibly consider them all in depth. Therefore, my first pass through the pile will be an elimination pass. I will want to get rid of 80% to 90% of them so I can get a manageable pile. I'll use simple criteria: this guy can't spell, that person had a low GPA, this guy will play games at work, etc.
So don't give me simple ways to make a trivial negative judgement about you.

And before someones says: "Jeez, Joaz! Are you really that simple-minded and trite?", I should mention that the quote above is a composite generated from an amalgam of managers and owners in my and other's businesses over the years.