Interactive Go lessons based on real game positions

Teaching
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Today I finished creating a new lesson, “Weaknesses of Stones.”

If you cannot see it yet, your browser cache may still be active.
Please try pressing F5 (reload) on the “Lesson List” page.

If you have any feedback or suggestions, I would be happy to hear them.

I still have a few lesson ideas prepared, but if there are topics you would like me to cover, I may consider them depending on the content.

However, please note that I currently do not plan to cover tsumego problems or full 19x19 game records.

5 Likes
22

Today I added a lesson on “Tewari.”
It is somewhat advanced and aimed at 5k–3d players, so if you are interested, please take a look.

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23

I’m looking forward to working though this next month, just trying to grind out some games this month for the Western Server Challenge.

I had a quick play, it looks awesome, there’s obviously much effort gone into it. One thing I like is that it’s a clean modern approach, making use of modern tech. Historically, sequences were in print form which necessitated the use of numbered stones in those diagrams that make my eyes glaze over. I find it so much nicer in your app being able to scroll forward and back through the moves.

Thanks for making this available.
:+1:

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Thank you for your kind words.
I’m glad you find the format useful.
I hope the lessons are helpful for your games.

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25

On March 27, I published “Opening 1-1” for intermediate to advanced players.
On March 28, I published “Bad Atari” and “Bad Bend” for beginner to intermediate players.

I would appreciate any feedback or comments.

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26

I did a few of the lessons a couple of weeks ago, came back today and forgot where I got up to. I can figure it out of course - but perhaps you might consider some form of progress/completion indicator if that could be achieved without needing an account.

I notice that OGS “Learn to Play Go” has a simple completion indicator shown on each section; few people would work through the entire series in a single sitting.

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27

Would you like an indicator for partial completions? :thinking:

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28

I think we have this already. Check top-right.

Screenshot 2026-04-16 at 12.12.00 PM
Screenshot 2026-04-16 at 12.12.00 PM1276×306 35.6 KB

Also, lovely project @Yagimaru will go through it more! Thank you for making this.

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Yeah, OGS has it.

Actually, for Yagimaru’s exercises I realize I can simply save a bookmark for wherever I’m up to; a progress indicator would be nice, but not necessary.

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30

This is lovely, thank you for creating this!

I’d prefer to go through these lessons in my own SGF viewer instead of your browser tool. Would you consider making the raw SGFs available?

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31

I’ve been busy lately, so I apologize for not checking the topic sooner.

@Fragile_Pākehā Thanks for your comment.

Regarding your question,
a feature to track progress through the Go lessons may honestly be difficult to implement at the moment.

To explain a bit technically:
the lesson list is managed not as a web app, but as simple static HTML files.

Because of that, under the current system, the most practical method would be for users to keep records on their own devices.

I agree that it would be a useful feature, but to be frank, implementation may be somewhat difficult.

@marinakai Thanks for your comment.

Regarding how to download the SGF files on PC,
there are currently no plans to provide the SGF data directly for download.

However, speaking about the internal structure, there are technically some possible methods.

Since the SGF data is embedded directly inside each HTML file, the following two methods can be used:

  1. On the relevant lesson page, press F12 (browser developer tools) and extract only the SGF data from the console.

  2. Save the relevant lesson page as a file, then extract the SGF data from the saved .htm file.

It requires a bit of effort, but with some basic knowledge of web pages and SGF files, I think it would be possible to obtain all lessons over time.

However, I cannot guarantee that your own SGF viewer software would reproduce the lessons from this site exactly as intended.

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32

It is not advanced enough to be called a full progress-tracking feature, but I have made a small improvement.

For lessons whose links you have already opened, the lesson title color now changes.
It changes from navy blue to gray.

I should mention in advance that this has not been adjusted for color vision accessibility.
I hope it can still be useful as a simple assistive feature.

2 Likes
33

On May 12, I published “The Essence of Go” and “Wait and See” for intermediate to advanced players.

I would appreciate any feedback or comments.

3 Likes