Go Commentary: Park Junghwan vs Chen Yaoye – 16th Samsung Cup

This game is between Park Junghwan 9p and Chen Yaoye 9p.

Chen Yaoye (9 dan, left). Park Junghwan (9 dan, right).

Itโ€™s from the second match of the group stage (round of 32) in the 16th Samsung Cup. The Samsung Cup uses a ‘double elimination’ system in this round.

It’s hard to explain how it works, but there’s an explanation in our article about the round of 32 in the 16th Samsung Cup.

This is their seventh game together. Chen won the first four games in a row, but Park won their last two games.ย Park is currently rated No. 2 in Korea, behind Lee Sedol, and Chen is rated No. 5 in China.

I played several unofficial games with Park, after I finished my military service, and I was surprised by his confidence in his reading. At that time, he was only 14 years old, but his play was already outstanding.

Let’s see the game.

Commented game record

Park Junghwan vs Chen Yaoye – 16th Samsung Cup


Download SGF File (Go Game Record)


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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. Great commentary as usual!

    Was amazing play by white, never felt like he was under attack during the whole game. As soon as black tried to attack him it looked as if he turned it right around, and suddenly black was the one being attacked.

  2. Beautiful game, the sad thing is that the more handsome player was lost. ๐Ÿ™‚

  3. Yet another very interesting game, becoming all the more interesting because of the excellent commentary: thank you very much.

  4. LucNoSensei says:

    Amazing play by Chen… Seeing how poorly the entire right side turned out for black, I was wondering about an option. On black 17, what if black just took P17 (as in one of the variations)? It seems a bit sub-par for black, but he at least gets pretty strong on the right, even though the top side is weird with bad aji.

    Seeing the game, clearly the way of the warrior turned out horribly, so maybe taking the bad result there and having it end there leaves a better game to be played afterwards? I know at this level they always play on the edge and hate taking a bad result. Probably it’s the only way to be competitive, but it got me wondering about what black did wrong.

    • An Younggil 8p says:

      Thank you for a long comment. B could play at P17 instead of Q17, but that was what W wanted B to play, so B didn’t do that. I had a look at this game again, and I realized that B27 can be wrong. It should be better at S10.

      • LucNoSensei says:

        Thanks for your reply! That’s an interesting suggestion for B. I’m still amazed at how badly W punished B almost the entire game, while nothing B did “feels” wrong. It feels like B should be able to be severe in the top right… but apparently he can’t?

        • LucNoSensei says:

          Would the game continue with B s10, W s14, B t12, W n17, B o16, W p15 then? It’s not easy for me to know what the pro result would be…

          • An Younggil 8p says:

            Yes, it would go like you said. I don’t know what the result would be either, but it should be better than the actual game.

  5. At 43, you show why Black captures: it’s due to the R15 aji. But later White still gets to play there and destroy the corner while finding eye potential there. The game seems worse than your variation, where Black can play Q9 and force White to live small, upon which Black kills the R15 aji in gote.

    In the game 43 lives small itself and gives White the advantage in the centre. So I did not understand why 43 is evaluated as the best move.

    Thank you for the great analysis

    • An Younggil 8p says:

      Yes, you’re right. As a result, B43 seems to be a misjudgement.
      However, you should consider the players. Park is teenage and might have really wanted to fight with Chen rather than compromise the situation. He started the early battle, so he couldn’t stop it without any benefit. Therefore, B43 could be wrong, but it was pretty inevitable for Park. I think Chen’s play was greater than Park thought.

  6. Move 16 was incredible. Such an amazing technique to counter black’s hopes.

    Do you think its possible to play move 17 at P15? I think I’ve seen some pros play crazy moves like that before.

  7. Where does white play if black plays the move S14 instead of the cut at Q14 (move 23)?
    I find the result good for black if white just connects at Q14 or at Q15 after which black can take the a big corner in gote. And white playing at R15 seems rather agressive, as leaving two cutting points to whiteยดs shape. What do you think?

    • An Younggil 8p says:

      I’m sorry but I don’t understand. B played at S14 instead of Q14 in the game, and W didn’t connect W R14 right away. Please check it again.

      • Sorry, I mean the variation, in which black plays P17 (move17 ->)

        • An Younggil 8p says:

          I see. If B plays at S14 in the variation, W’d extend at R15.
          As you mentioned, it might look aggressive, but the fighting would be ok for W as W’s stones are lighter than it looks.
          You can try to research by yourself! ๐Ÿ˜€

  8. Why doesn’t black play 129 at Q2? O4 would be gote then, no?

  9. Oh, after black Q2, white O4 then if black sonppaem(? tenuki) white P2 is nasty. A nice Maek! ๐Ÿ™‚

    Another good problem!? ๐Ÿ™‚

    • Younggil An says:

      You’re right. It’s hard for Black to tenuki, so Park spent one more move there.

      I’m not sure if it could be a good problem, because Black can still live inside after White cuts at P2.

  10. Well, add white stones at K3 and K2… but perhaps not so interesting. Reducing black to a minimal life in sente is almost more fun! ๐Ÿ™‚