heyo: This "pass stone" is essentially the Chinese scoring system, which others have suggested in this DB before. Chinese scoring actually fixes several nagging issues encountered on this site with the Japanese scoring, mainly dealing with people who don't understand scoring completely.
(sakla) Tired of placing boats or Espionage pieces at the begining of the game? You can go to Game Editors and save some of your favourite positions for future use. (pauloaguia) (Bütün ipuçlarını göster)