Korean Rules
Modern Korean rules are derived from Japanese rules, and are essentially the same in practice.
An English translation of the rules can be found at
http://english.dashn.com/korea_baduk/koreabaduk_05.htm.
tderz: The English could be improved there.
More important, IMO (a lowly 3dan), some explanations seem plainly wrong - at least food for Robert Jasiek. Most probably Robert will have discussed that one already somewhere.
Take e.g. The Additional Rules (Article 1,2)
http://english.dashn.com/korea_baduk/koreabaduk_05_08.htm reading: "In Figure 3-2 White 1 should be sufficient to capture all the Black stones. If white has clearly more Paegam no further move is need. " while the figure shows a manen ko?. There are many more examples which I do not understand.
Besides an improvement of the English seems necessary. Who would like to participate in the job? The website gives a telephone no. First one should phone and ask whether they appreciate any improvement at all and ask about the - several - rule inclarities (could derive from a Korean to English translation as well).
There is an old Korean variant of go called Sunjang Baduk. This has very different rules.
iopq: I guess under Korean rules, ko fights where one side has obviously more ko threats are not necessary - which under territory counting means you can leave a ko unresolved because you have more ko threats. That means an additional point of territory for the person who doesn't need to play.
Does anyone know the komi for Korean rules? Is it 6.5 or 7.5?
MrShin: 6.5; Chinese is 7.5 if I remember correctly
iopq: According to the diagrams on the site, the two Black stones are alive! I guess it would take playing two white stones to kill them, but isn't that counter-intuitive?
Bildstein: But to capture them, White must give up two of his stones.
iopq: Oh, I get it now, thanks. Although wouldn't you prefer to play the sequence out? Then you get a small ko threat and eliminate one.