Go Commentary: Choi Cheolhan vs Park Junghwan – 18th Chunwon

This is the 2nd game of the 18th Chunwon (Korean Tengen) final, which was played on January 14, 2014 at the K-Baduk Studio in Seoul, Korea.

Park Junghwan


Park Junghwan 9 dan at the 18th Chunwon title match.

Park won the 1st game of the final, and was aiming to make his come back as Chunwon title holder by winning this game.

Park Junghwan’s currently ranked #1 in Korea, and he’s on a 13 game winning streak at the moment. He won the 14th Chunwon in 2009, defeating Kim Jiseok 9p in the final, and this year Park defeated Kim Jiseok once again, in the semifinal.

Choi Cheolhan

On the other hand, Choi Cheolhan’s currently ranked #4 in Korea and he’s already won the Chunwon four times. Last year, he was defeated by Park Younghun 9p in the final, but he defeated him in the semifinal this year.

Their head to head record before this game was 9-4 in Park’s favor, so Choi needs to find Park’s weaknesses on the board.

The time limit in the Chunwon is 1 hour and 3 x 40 seconds byo-yomi each.

Let’s have a look at the game!

Commented game record

Choi Cheolhan vs Park Junghwan


Download SGF File (Go Game Record)


18th Chunwon photos

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About Younggil An

Younggil is an 8 dan professional Go player with the Korean Baduk Association. He qualified as a professional in 1997 and won an award for winning 18 consecutive professional matches the following year. After completing compulsory military service, Younggil left Korea in 2008, to teach and promote the game Go overseas. Younggil now lives in Sydney, Australia, and is one of the founders of Go Game Guru. On Friday evenings, Younggil is usually at the Sydney Go Club, where he gives weekly lessons and plays simultaneous games.

You can follow Go Game Guru on Facebook, Twitter, Google+ and Youtube.


  1. Wouah , it was a great game and of course a great commentary (im a big fan of park). I hope to see more commentaries 🙂

  2. beautiful

  3. Very interesting game, all the more because of the enlightening comments: thank you! Park not playing under- or overplays: to me very impressive, showing a lot of confidence and strength of mind. I can imagine the such an attitude must be quite disheartening for Choi, dampening his fighting spirit. I guess this game can be called a masterpiece for Park.

    Kind regards,

    • Younggil An says:

      I agree. Choi doesn’t play well against Park somehow, and what you said could be the reason why.

  4. Anonymous says:

    What does “3 x 40 seconds byo-yomi” mean? Is it 40 seconds for 3 moves once the main time has expired?

    • Yudong-nick says:

      it means both players get 40sec/move and both can have 40 secs more, two times, when they want to think more.

  5. Yudong-nick says:

    This is first few moves of Mok JinSeok 9p(black) v. Park Younghun 9p at Olleh KT Cup. Behold the new meta! http://imgur.com/uTKtMrg

  6. Without the commentary, I would have just wondered that w is making all these reasonable moves, but still b is making all this nice profit. It takes a pros eye to spot chinks in that armor, I guess. Choi must be a nightmare of an opponent for amateurs.

  7. Michael Brownell says:

    Thanks for the great analysis, Younggil. What a strange and interesting game!

  8. Robert Gilman says:

    Very interesting game very clearly commented. Commentaries like these are a great help not only for the tactical insights but also for seeing how the moves fit into the overall game plan.

  9. I tried analysing this game for a friend (who is about 1 dan – I am rusty 6 dan), so to see your pro commentary on the same game was more than usually fascinating! Many thanks for it.

    I thought white 12 was beautiful in this position – I looked at it quite deeply and could see no way for black to work against it – and white got sente which is good in this game, no?

    I assume black is playing to find a time to enclose the lower left at the right time, and white likewise: my question is, if black plays first, should he enclose at the 5-5 point (E5), or D4? Or does it depend? Ignoring for a moment the relationship with the extensions, the structure with E5 is a bit like the powerful pillbox, but a bit bigger and thinner – is it good?

    • Younggil An says:

      Yes, I thought the move 12 was good too.
      For the lower left corner, black’s intention was not to enclose the corner again. If black wants to enclose later, 4-4 is more secured than 5-5. Your theory is good anyway! 🙂

  10. Thanks. Looking forward to your next commentary! 🙂

  11. Hello and thank you for all your detailed comments on every games! I have 1 question i cannot find answer myself : move 81 you suggest hane and you show a sequence with white extendind but i was thinking about l8 for move 82 and i cannot see all variation and even evaluate them. Can you enlight me on this please? and again thank you for being such an awesome human being 😀 <3

    • Younggil An says:

      That’s a good question.
      If white attaches at L8 in your variation, black would answer at K8, W K9, B M9. White can’t save the stone L8, and even if white could make a double tiger’s mouth in the center, it’s still hard for white to save the big dragon. Anyway, black would have had more chances than in the actual game.

      • yes i was more thinking about the double tiger mouth which seemed to give more eyeshape to white but if you say it’s still difficult i get it thank you for answering so fast 😀

        • Younggil An says:

          It’s actually good to think about an alternative way like that. I meant it’s still difficult for white to live against Choi, but if you play in your own game, it’d be a good move! 🙂