Ruby Ruby's page Japanese version wrapper class of gettext , can switch strings in locales. I refered to Yoshiyuki Kondo's 'getstat-rta50i' and M. Okamura's 'Netgenesis Jouhou Page' . A purpose of this game is to guess numbers in eight times.
H means position and number are both correct.
B means only number is correct but position is incorrect. By default, numbers are one to seven in three figures.