Most of the games I play are with a go-playing program and I rely on the program to calculate the territory during the game, so I can't do it myself. In order not to make a game unpleasant for my opponent by playing on and on when I am way behind, I would like to be able to calculate the territorial balance myself and resign with a good grace when I have no chance of winning. How can I learn how to judge the territorial balance? Please tell me if there is any other way apart from playing a lot of games. I approve of your wish to resign with a good grace when you are losing by a lot, In such cases, it's much better for both players if you resign and start a new game. It's probably difficult to learn positional judgment just from playing a lot of games. First of all, you should practise with a book on the endgame, checking if you are counting territory accurately. Players often count territory in the wrong way without realizing. The next thing you should do is to get into the habit of counting territory in your games -- not only in the endgame, but also in the opening, the middle game and the large endgame. Depending on the stage of the game, the counting may be very approximate -- the important thing is to try to be always aware of the relative balance of territory between you and your opponent. This links up with territorial judgment. At first, it may be quite troublesome, but once you get used to it you'll do it as a reflex. Please try it.