(A) After a Challenge, the Third Party must indicate within the first minute of the time limit whether she will present a Solution. (B) Once a judge agrees to check that a Solution equals the Goal, checkers may make no further objections to the Solution. (C) If checkers separately try to prove that the Solution is ambiguous, they must do so simultaneously. (D) After a Challenge, a Third Party who indicates he will present a Solution may still retract that decision before the two-minute time-limit expires.
