In the first case, Wiskey knows the month is 12,
and the list have only date 12.25, so Wiskey will win.
In the second case, theie are three dates in December,
so Wiskey can't decide which one is right, he must say NO.
When is Michelle's turn, she knows the day is 25, so she will win.
In the third case, nobody will win the game, the answer is "No".
In the fourth case, 12.25 and 12.24 are in December, so Wiskey says NO.
Michelle thinks if the month is 11, Wiskey must knew the answer,
but he said NO, so the month must be 12, so Michelle knows the answer is 12.25.