If you just want to play Go on your desktop, an easy way to do it is in your browser through an online server like OGS. On iOS I like SmartGo. See more Go resources at the bottom of this page. But the bulk of this page is dedicated to playing Go through a desktop app called Sabaki.
For an all-in-one training software solution, I strongly recommend Katrain. You'll probably need pipx or pip3 to install it, and I've yet to get the audio to work on Ubuntu, but otherwise it's great.
In Sabaki you can play against yourself or load and go through SGF files. But you can also "attach" a number of "game engines" to Sabaki to either play against or have analyze games. You can manage the engines available to Sabaki by going to "Engines" > "Manage Engines".
GNU Go is an engine that's nice in that it can (a) play on multiple board sizes out of the box, and (b) has multiple levels to choose from (1 through 10 or 1 through 9, I'm not sure).
Go to the Download page and download the source code to the latest version of GNU Go. It's likely to be a
tar.gz file. Once downloaded, expand it.
Inside that directory, there should be a README and an INSTALL documentation text file for you. But basically, to make the executable for a specific level, I'm pretty sure you run:
./configure --enable-level=4; make
To build a level 4 binary. (There are plenty of other options explained in one of the documentation text files.) This binary will be created and placed at
Now in Sabaki, go to Engines > Manage Engines and click the "Add" button. For path, enter
path/to/interface/gnugo, and then for "arguments" I'm pretty sure you want to put
--mode gtp. Leave "Initial commands" blank. Note that after Adding an engine, you may need to restart Sabaki to use it.
To build/attach multiple levels of GNU Go, I just duplicated the entire
gnudo directory and rebuilt with the level I want. So in
go-engines I've got:
go-engines/gnugo-3.8-lvl1 go-engines/gnugo-3.8-lvl2 go-engines/gnugo-3.8-lvl3 go-engines/gnugo-3.8-lvl5 go-engines/gnugo-3.8-lvl7 go-engines/gnugo-3.8-lvl9
each of which have their own executables at
interface/gnugo to attach in Sabaki. For example, my engine named "GNUGo_lvl_3" has a path of
go-engines/gnugo-3.8-lvl3/interface/gnugo ("arguments" for all of them are (still)
Pachi is a pretty strong engine, but that, unlike LeelaZero, can play smaller board sizes out-of-the-box, so to speak. The developers note:
The default engine plays by Chinese rules and should be about 7d KGS strength on 9x9. On 19x19 it can hold a solid KGS 2d rank on modest hardware (Raspberry Pi, dcnn) or faster machine (e.g. six-way Intel i7) without dcnn.
To install Pachi via pre-compiled binary, head over to GitHub Releases page and download the latest
-linux-static.zip. Extract this.
I didn't change any configurations.
Then in Sabaki, I just entered the path to the
pachi-12.40-amd64 file in the unzipped directory, with no arguments or initial commands, and it seems to work. However, as I installed it, it can only do analysis on 19x19 boards I think?
I haven't tried this, but the Pachi README says it might improve performance to build it from source. Instructions here.
- Download and install Sabaki. Make sure it runs before proceeding.
- Build LeelaZero from source
- Get a "network hash file" for LeelaZero, "likely the best network is the one you want". Download it here or find more instructions here.
- In Sabaki, go to Engines > Manage Engines. Enter the absolute file path to the
leelazbinary file you just built, which is probably at something like
leela-zero/build/leelaz. For "Arguments", enter
--gtp -w path/to/weightsfile(which I think is the "network hash file"?)
- Restart Sabaki
- Find the Game Info menu item. For White, in the drop-down menu, select Leela Zero. Make sure you choose a 19 by 19 board. And you're probably going to want a large handicap.
KataGo is another new engine. I think I like it best of these options since it works on smaller board sizes and, apparently, it works well with handicaps.
To run it on Linux (or Windows), I think you want to download the appropriate binary from the GitHub release page. On my System76 Oryx Pro, I apparently prefer the
katago-v1.X.X-opencl-linux-x64.zip version. And you also need one of the "block network" files, which I think are called "models". These files end in
txt.gz. I think I've chosen the "40 block network" before, though I don't fully understand what that number means.
Next, you may want to have the binary create a config file tuned to your computer. From the README's "How to Use" section:
"To automatically tune threads and other settings for you based on asking simple questions, and generate a GTP config for you:
./katago genconfig -model <NEURALNET>.gz -output <PATH_TO_SAVE_GTP_CONFIG>.cfg"
Answer the questions as you like. It'll create a fresh text config file that we'll point Sabaki to (see below).
At some point, you'll want to run something like
chmod a+x ./katago.
/home/sschlinkert/code/go-engines/katago-v1.3.5-opencl-linux-x64/katago gtp -model '/home/sschlinkert/code/go-engines/katago-v1.3.5-opencl-linux-x64/g170-b30c320x2-s2846858752-d829865719.bin.gz' -config '/home/sschlinkert/code/go-engines/katago-v1.3.5-opencl-linux-x64/my_oryx_pro_config.cfg'
and no "initial commands"
Note that you may need to run
chmod a+x on the executable before it'll work.
To play against one of these engines, open Sabaki. Be sure you're on a blank, new game. Then go to "File" > "Game Info". If you want Balck, make the engine take Whtie by clicking the down arrow next to "White" and selecting the engine you want to play. Fill out the other fields as desired, then hit the OK button. If you're Black, place a stone to start the game, and the engine should respond. To see what the engine is doing, go to "Engines" > "Toggle GTP console".
Alternatively you can manually attach an engine by going to Engines > "Attach".
To prevent engines from making moves right when you initially attach them (which can be annoying if you just want to use the engine to analyze possible moves [see below]), I would go to File > Preferences and uncheck "Start game right after attaching engines". The con to this is that to start playing a game against an engine, you have to first attach it ("Engines" > "Attach"), then (sometimes) tell it to start playing ("Engines" > "Start Playing").
Some of these engines -- like LeelaZero and Pachi -- allow you to analyze next moves (though usually only on 19x19 games it seems?). To do this:
- "Engines" > "Toggle Analysis" gives you a heat map of what the engine likes for the next move. Leela will do both show the analysis of its moves as well as provide analysis for your move (you can accept by clicking on the green blob, or move somewhere else)
- With "Analysis" toggled on, you can also hover a piece over a space and the engine will play out the game from there, if you were to move there.
If the GPU load gets to be too much, you can always make the engine suspend by going to "Engines" > "Suspend". Toggling Analysis off will help too, as the engine won't think during your move.
If you're here and want to learn more about Go, I've pasted some of my notes on general Go resources below.
To learn how to play Go, I'd recommend watching YouTube videos (links below), but obviously there are other ways.
- YouTube videos I liked: "How to Play Go" YouTube series. Here's another one I watched, and one from the New York Institute of Go.
- The r/baduk subreddit ("Baduk" is what they call the game in Korean, and has much better search-ability online) has a pinned post full of links for newcomers, including to YouTube resources.
- There's also this interactive tutorial, though I had to fiddle with my browser settings a bit to make it work.
- Here's a non-interactive slideshow of sorts that looks good.
- On desktop web: I like online-go.com for actually playing Go games online. You can play both other humans and a variety of bots with different skill levels.
- If you don't want to be bothered to create an account, there's this site, though it doesn't offer handicaps on smaller boards like 9 by 9, so you're probably going to lose way more than half the time.
- On iOS: As mentioned, I've found this $2.99 app called SmartGo nice for beginners like me. If you ask, it'll estimate the score for you and even suggest a move for you. If that's not challenging enough, A Master of Go is an expensive iOS app that features high-end AI software.
- On your desktop, you can install Sabaki and a number of Go engines to play against.
- There are more software options listed here.
If you're don't want to play full games, you can find apps and websites that provide small exercises or puzzles to play through.
- The iOS app SmartGo that I've mentioned above has a tutorial of live exercises somewhere in the menus.
- online-go.com has a "playlist" of puzzles for beginners, though I found them a bit too difficult?
I'm not sure if you need a book or books to learn, but obviously there are plenty out there. In my cursory search of posts on r/baduk, I found and bought three popular options for beginners. I've read at least half of them, and I'd recommend reading them in this order:
- Learn to Play Go by Janice Kim would probably work for brand new players.
- Go for Beginners by Kaoru Iwamoto seems like a classic intro text.
- Lessons in the Fundamentals of Go by Toshiro Kageyama is still a bit advanced for me.