Hello. I am a beginner, about 1 month since I started Go. Recently, I started playing games by 19X19 board. Most of the time, I take about 1 hour to play a game but I lose concentration in the middle of the game. Just in case, I try to think of 3 moves ahead but my mind can’t follow from half way point of the game. What shall I do to maintain my concentration? For a game for beginners by 19X19 board, from the first move to the end to fill the board, you will be playing about 200 moves. So, it may be difficult to keep your concentration because there are too many places you have to think of. But you need to get used to it so please try playing more and more games. Gradually, you will get used to it and learn Joseki and Yose which appear a lot in the games and your thinking time will be shorter. You said it takes 1 hour for a game but I would recommend you to play a little faster and take time for a review to find out how to play when you don’t know what to do or learn new things. If you learn the procedure and shapes, I think you can reduce your thinking time and you can concentrate on the important parts.