Precondition: The player wants to play out the hand that is a QUAD with a PAIR as kicker, e.g. 3333 + 44 The cards2hand() method inside the Hand class judges this hand as ILLEGAL. However, according to the rule of the game, this is a valid hand. The bug is reproducible simply by playing out a a QUAD with a PAIR as kicker on the terminal.
Inside Hand.carsd2Hand() method, this situation was neglected and such that was judged as Illegal.