Aji — The Phantom Potential

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What's hiding among the stones?
October 2025
(21)

Your own position could often have some aji, or concealed issues that you need to get rid of. At the same time your opponent’s position could have some invisible possibilities that you can reveal. Aji is a multilateral and advanced concept in Go. Noticing and using aji to your advantage in games requires a fairly good understanding of shapes and tesuji, strong reading skills and a lot of experience.

This course will introduce the key concepts of “aji” and “aji keshi”, the groundwork of their practical application, and many patterns that you can take straight into your own games.

Suitable for: 9 kyu – 5 dan

Alexander has been collecting these examples for 20 years! As it often happens with his lessons, there are some fundamental principles and standard positions that kyu players can learn here, but there are also some impressive and inspiring techniques for dan players.

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Teacher

Alexander Dinerstein 3p

Professional Go player from the Korean Baduk Association. 7-time European champion.

  $99.90 *
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Course Includes

9 Lessons
10 Quizzes

Reviews

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  1. Cardeillac Pierre
    ~10 kyu · 100% of the course done

    One of the best courses I've ever watched. It made my level, perspectives and pleasure to play get even higher than ever !
    Thank you very much

    Helpful
  2. Hargevian

    A really good course.
    I was expecting a dense course since it deals with that subtle, elusive concept called aji.
    But I was wrong.
    It’s a course that goes step by step, introducing the concepts little by little and gradually increasing the difficulty of the quizzes without you even realizing it.

    Helpful
  3. Sakoja

    The course was extremely important, useful, and deep. However, as constructive feedback, I think it needs a much deeper explanation of aji: when it should be avoided and when playing passively just to avoid aji is actually a mistake. Sometimes such moves are completely fine, and even AI and professional players may recommend the opposite. I hope future courses explore these nuances more deeply.

    Helpful
  4. vertsnert01

    I started this lesson months ago and was not at a level to understand it. But having completed many of the other courses on Go Magic and Alexander’s other two courses, I returned to this one and feel like I’ve benefited greatly from it. I love Alexander’s calm presence at the Go board and the clarity of his examples.

    Helpful
  5. Ritam Nag

    an excellent introduction to ideas about aji, with many great examples

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  6. Matthew McKee 4d

    As always Dinerstein makes for an amazing teacher. His three courses on attachments, probes, and now aji truly puts the magic in Go Magic. He explains clearly and gives applicable examples. Anyone looking to add more support to the very foundations of their Go skill needs to start with these three courses and Aji is his most accessible yet. I'd recommend the order of: Aji, Attachments, Probes.

    Helpful
  7. ZoticusXD

    wonderful course!

    Helpful
  8. luisdiaz84

    very good

    Helpful
  9. abaca

    Hard time to master it 🤪

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  10. Pedro Costi

    Invaluable. This was amazing. Great teacher!

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