AGA Rules
The AGA rules are the rules of the American Go Association.
They use area scoring, but pass stones are used so that the score can be counted by methods usually used for territory scoring.[1] A consequence of area scoring is that eyes in seki score.
They prohibit suicide.
(They are therefore quite similar to Chinese rules.)
They use the situational superko rule:
- It is illegal to play in such a way as to repeat a previous board position from the game, with the same player to play.[2]
The complete text of the rules can be found here: http://www.usgo.org/resources/downloads/completerules.pdf
Notice that the 1991 date in the above document is wrong: the rules were changed in August 2004, with komi set to 7.5 rather than 5.5, effective 2005; see point 9 in http://www.usgo.org/resources/downloads/2004-minutes.pdf
The French rules are essentially the same as AGA rules.
[1] Territory counting (with pass stones) is used by default when no agreement is made.
[2] Robert Jasiek: Many readers of the rules text read it as if it were meant to describe situational superko (but the major author of the rules, Terry Benson, insists that natural situational superko was meant).