I have not spent much time playing Go in the “real world.” Most of my experience with the game has been online, although I did purchase a goban a few weeks ago. I have been considering buying or making a clock, but I had a question about how to use a timer in a face-to-face game:
Imagine that I am playing with 20-second byo-yomi, and I capture a large group of my opponents stones. Do I have exactly 20 seconds to make the move, remove all of the captured stones from the board, and push the timer? How is this normally dealt with in face-to-face games?
One can pause the clock if there is a capture of three or more stones.
I didn’t know that was allowed. I learned something today.
That’s a fairly common rule in blitz tournaments, rather than a universal truth. In slow tournaments you usually can’t pause the clock even for big captures. I was once playing a game with 50 stones in 5 minutes accelerating overtime with no such rule and I pre-emptively captured dozens of dead stones in a semeai rather than playing a useful move as I was miles ahead and my opponent could have played atari on me at the end of a byo-yomi period to win on time.
If memory serves, in America it is an official aga rule. I had the impression it was standard in Europe also.
I was able to find this in Senseis Library:
Stopping clock for removing big captures
For how many stones may the clock be stopped?
EGF: 3 (Clock neutralisation - 5.)
AGA: 2 (VI. E. Timekeeping. 10. c.)
It’s like @Pempu say you can find it in EGF rules Chapter 5, paragraph 6.