GoProblems.com

    Keywords: Problem, Software

[ext] http://www.goproblems.com/

THE site for Tsume Go study. It offers more than 2000 problems.

Go problems can be selected by topic (fuseki, endgame, etc.), by difficulty (Go rank, or average time needed to solve a problem) and several other criteria.

The site is free, but requires a Java enabled browser.


juhtolv: If you do not want to or can not use Java for some reason, you can download all those problems as SGF-files. You'd better use goproblemscom2gquiz.sh for that purpose.

Reuven - I link to problems there using [ext] GP. It'd be nice if there was a standard of some kind.

(And btw, Not yet 2000 ^^* - Only the active once are counted. And Adum "fixed" it - Now u get another "life" every certain amount of problems..)

Scartol: Am I the only one who finds the general difficulty rating system (Easy, Medium, Difficult) too vague? Easy seems to cover 30k-20k, and as a 9k, I can't even begin to follow most of the Difficult problems; which leads me to suspect that Medium covers 20k-5k or so. Quite a range! Maybe we could have a Low Medium and High Medium rating?

mAsterdam: goproblems.com is not the only site with this problem.
jvt: Maybe it is because of the Chinese custom of having only three levels of difficulty: chuji (beginner), zhongji (intermediate), gaoji (advanced).
MK: It has been recently switched into an estimate of kyu/dan level needed to solve the problem.

HolIgor: It seems to me that the problems are rated by the ratio of successful solutions there. A problem may change the level from hard to easy in a matter of hours as it is solved by more and more people. As the most of the solvers are of low kyu - dan level, all problems of 5 kyu level and below tend to become "easy" with time. I think one can ask adum to introduce new levels of difficulty. I think that now the grading is just for me (1k IGS). For me easy problems are easy, medium are medium and hard are hard. adum seems to be of the same level.

unkx80: Instead of using "easy", "medium", "hard" to see the difficulty of the problem, one can see the two numbers x/y instead. From [ext] http://www.goproblems.com/info.php3, we know that x is the percentage of the people who got the problem wrong (at the first attempt). Because "easy", "medium", "hard" is derived from x, it might be better to look at x instead. If I am not wrong, "easy" corresponds to x <= 60, "middle" corresponds to 60 < x <= 90, "hard" corresponds to 90 < x.

Benjamin Geiger: What's stopping goproblems.com from entering some sort of partnership with a Go server? That way, when you log into goproblems.com, it could present problems of appropriate difficulty. More importantly, it could combine the success ratio with your rank and calculate based on that? (For example, if most of the visitors are 5k-2d, the success ratios given aren't going to be very helpful for a 25k. However, if it could determine how successful other 28k-22k players have been...)

uxs: That would probably work, but I'm not sure if that is even necessary. Just having an account system on goproblems where information on the problems you solved is kept and used for balancing would probably work too.


Reuven -

I'd like to ask if it's a good idea to "systematically" copy problems from here to [ext] http://www.goproblems.com/.

Opinions are more than welcome..

(Any idea how to make a poll?)


It may seem funny that now that I have useful java (means I can try goproblems.com at all, bad design that it isn't even remotely usable otherwise!) I find it pretty useless. There's no way to keep a limitation to problem level when browsing, and no way to keep off from the problems that explore rules peculiarities or game theory (which I consider an uninteresting hobby.)

Of course one can say I should use the timed trials for keeping to the level of problems I want, but that's useless for training. There's no usable way to get to the next problem, even if I accept the fact that I did not solve this or that problem. Reloading the page really circumvents the idea, and of course is just the little extra that surpasses the annoyance limit.

This is not to say that goproblems.com might not be usable for some people, but at least setting the problem level restriction should be there -- and this applies regardless of the reader's level. As it is, it seems to remain a useless curiousity for the one who just wants to train him/herself.

Oh well, I bet some people tell me "Don't Use It, Then," and of course I won't. Yet there remains a remote possibility someone takes this as constructive criticism, so I took the effort. HAND.

-- ObOlli?


This is a copy of the living page "GoProblems.com" at Sensei's Library.
(OC) 2004 the Authors, published under the OpenContent License V1.0.
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