5

I've seen 3 minute and 1 minute matches on Chess.com where the players move at insane speeds during the last few remaining seconds of the match.

I'm talking in milliseconds, I'd at least take that much of time to only recognize an event happening. So how do they even respond with a correct move?

How do they move so fast? Do they use some kind of special software or what?

  • They use pre-move and good moving mouse. Using special software would be against the rules. – SmallChess Apr 13 '18 at 14:27
  • The pre-move answer mostly applies to 1 minute (or less), i.e. bullet games. 3 minute games are fast, but enough time to make regular moves and have enough time to rule out the most obvious blunders. – user1583209 Apr 13 '18 at 16:54
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You're likely looking at premoves; the players know (or at least have a good guess at) what their opponent's move is going to be, so they can already 'ready' their own move by taking the piece and dropping or just moving it to the destination square. Of course, if the opponent makes another move, they have to cancel their move (if it's still possible; that depends on the client, and whether they're dropping or just moving) or they might make a huge blunder.

Premoving can lead to funny things like the following:

[FEN ""]
1. d4 d5 2. Bg5 e6 3. Bxd8

Here, Black expects White to play a Queens Gambit with 2. c4, which is the normal move. If Black premoves 2... e6 and notices the 2. Bg5 too late, they will lose their queen.

  • Depending on the site I believe you can make conditional pre-moves. I think chess.com allows this for “premium members”, though perhaps only in correspondence. – Dennis Apr 13 '18 at 14:34
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    @Dennis, I use conditional moves in correspondence chess, but I don't think they would make sense for bullet since setting up the various conditional moves would take longer than just making a move the old-fashioned way! – itub Apr 13 '18 at 15:43
  • @itub Yes, but you're spending the time on your opponent's turn. – Acccumulation Apr 13 '18 at 21:04
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In addition to @Glorfindel -part of the answer is also that top players really are extremely fast. They recognizes the position and patterns faster than us mortal can blink. Some of the fastest chess is played with 15 seconds on the clock. That means that the whole match is over in less than half a minute.

A search for Ultrabullet chess returns e.g. https://www.youtube.com/watch?v=PLVK7iryHJA

or here both players berserks (meaning they only have half the time rounded e.i. 8 seconds) and play blindfolded: https://youtu.be/6ygQMw4rBHg?t=10m54s

Here: https://youtu.be/G2AMN9tHSB0?t=1h1m25s 87 moves was made in 13.5 second. That is more than 6 moves/second.

When the chess is so fast it is difficult to tell if the clock had started counting when the move was made or if it was a premove made when the opponents clock was counting. Often you will hear players complain about lag, as even few ms of internet/server delay affects their play.

  • Wow that is just amazing!! – Andrew Scott Apr 14 '18 at 10:26

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