[=] Comparison of Some Go Rules

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/	Japanese, Korean	AGA	Chinese	SST (Ing)	New Zealand
Scoring	Territory	Area	Area	Area	Area
Counting	Territory	Area or Territory	Area	Fill-in	Area
Does it cost to make a move inside my territory?	Yes	No	No	No	No
Can you count points in a seki?	No	Yes	Yes	Yes	Yes
Is suicide allowed?	No	No	No	Yes	Yes
What happens if the position repeats?	"No result". The game may be replayed	Repetitions are explicitly forbidden	Forbidden or may be a drawn game	Repetitions are restricted by the SST ko rule	Repetitions are explicitly forbidden
Status of "bent four in the corner"	Dead	Play it out	Play it out	Play it out	Play it out
Komi	6½	7½	7½ (3¾ by Chinese counting)	8	7
Placement of handicap stones	Fixed	Fixed	Free	Free	Free
Compensation for handicap stones	(No)	n-1 points if area count	n points	No	No

Note: the various online Go servers make attempts at implementing one of these rulesets - usually Japanese or Chinese.

[=]http://www.britgo.org/