It's basically the same technique that websites use to prevent hackers from guessing passwords. You can only try to login so quickly (otherwise a computer could try every password 1 million times per second).
With a 0.25 second minimum move time, no matter how fast someone's internet connection is, they can't play more than 4 moves if they have 1 second left on the clock. Or 8 moves if they have 2 seconds, etc.
No matter how fast they move, no matter how many pre-moves they make, there would be a reasonable limit.
Now, you might think, "Wouldn't this make it WORSE for people with slow connections?"
No.
A quarter second delay isn't very much, it affects both players equally, and your internet connection would have to be SO BAD that your lag is more than a quarter of a second for it to have any effect at all.
(Remember that this is a minimum 0.25 seconds per move, not an additional delay on top of whatever time is already taken. If your moves naturally take a quarter of a second, this wouldn't affect you.)
It's basically the same technique that websites use to prevent hackers from guessing passwords. You can only try to login so quickly (otherwise a computer could try every password 1 million times per second).
With a 0.25 second minimum move time, no matter how fast someone's internet connection is, they can't play more than 4 moves if they have 1 second left on the clock. Or 8 moves if they have 2 seconds, etc.
No matter how fast they move, no matter how many pre-moves they make, there would be a reasonable limit.
Now, you might think, "Wouldn't this make it WORSE for people with slow connections?"
No.
A quarter second delay isn't very much, it affects both players equally, and your internet connection would have to be SO BAD that your lag is more than a quarter of a second for it to have any effect at all.
(Remember that this is a minimum 0.25 seconds per move, not an additional delay on top of whatever time is already taken. If your moves naturally take a quarter of a second, this wouldn't affect you.)