Slashdot Mirror


Number of Legal 18x18 Go Positions Computed; 19x19 On the Horizon

johntromp writes It took about 50,000 CPU hours and 4PB of disk IO, but now we know the exact number of legal 18x18 Go positions. Seeking computing power for the ultimate 19x19 count. And it's not a heat-death-of-the-universe kind of question, either, they say: "Thanks to the Chinese Remainder Theorem, the work of computing L(19,19) can be split up into 9 jobs that each compute 64 bits of the 566-bit result. Allowing for some redundancy, we need from 10 to 13 servers, each with at least 8 cores, 512GB RAM, and ample disk space (10-15TB), running for about 5-9 months."

3 of 186 comments (clear)

  1. Re:I know it is a bit late in life... by shadowofwind · · Score: 4, Interesting

    Chess mentality doesn't transfer very well to go in my observation. Since go has vastly more plausibly good moves, chess players often find themselves not understanding how to choose where to go next. Most people I've known who like go a lot hate chess. I've known one person who likes both, and he was never able to get very good at go. Generally speaking, chess can be learned by someone who can think logically and learn the standard opening sequences. Go is more like painting. Its not necessarily a superior skill, but not all intellectually-smart people are smart in the right way.

    But by all means learn, its easy to get a game on the internet. If you like it its worth it. And if you do it for ego and discover you suck, sometimes that's worth something too.

  2. Re:I know it is a bit late in life... by JanneM · · Score: 4, Interesting

    To be honest, as a kid I enjoyed chess and played with my friends right up to the point where you suddenly had to start memorizing openings and other canned sequences. At which point it felt more like a school subject than an escape from it.

    --
    Trust the Computer. The Computer is your friend.
  3. Re:I know it is a bit late in life... by AthanasiusKircher · · Score: 4, Interesting

    I have to agree with this. I loved chess as a little kid -- probably started playing when I was 4 or so. Always just played for fun and liked the way it was more complex than something like checkers. I also occasionally enjoyed puzzling out some of those chess puzzles in the newspaper, which usually involved endgame scenarios. But then, early in middle school, I played against someone who actually "knew what he was doing," which included things like memorized openings, basic tactics, and canned strategies. He was kinda dumb but nonetheless beat me handily. I spent a month or two learning openings and such, and suddenly I could beat most of my friends (including those quite a bit older) pretty consistently too, just from the improved board positions.

    At that point I realized that becoming a "real chess player" was very different from the fun I'd been having, and I completely lost interest. I've only played a handful of times since, mostly because it's really hard to have any fun playing with my knowledge -- not enough to play "real chess" against anyone who studied strategy, but too much to play against the people who know the basic rules but never learned that stuff.

    I admire the grandmasters, because they have both that amazing set of memorized knowledge AND the incredible logic/intuition. But I have absolutely no desire to play the game anymore because while I'm somewhat interested in the latter, I can't be bothered with the former. It's permanently ruined for me.