Do we always have 3 moves made? And, how can there be a draw when it
is said that he judges saw that only one move is enough for one of
the players to win? And, finally, what should I output if noone can
win in one turn, but the last "X" wins the game(I am not sure that
such a situatuon exists, but :)) )

as i understand the problem, just ignore "Since there are as many
Crosses as Ouths Panel of Judges decided to sentence the draw.
However Head Judge observed that one player threats to win the game
at one move. "

the real task is that "Your task is to determine the Winner in case of the
best playing of the both rivals."

is this enough info :)