scene from sonic boom: blackout sonic and his friends have to get a powerful crystal called the the maroki crystal to power their village. they go up a snowy mountain to a door. they solved a puzzle to get inside they next puzzle was a riddle, with an obstacle, poisonous gas filled the air which made all of them cough. the riddle was how many sides does a circle have? tails stood up and said the have no sides, the answer was wrong. he coughed and fainted on the floor due to the poisonous gas he inhaled. in the end the answer was a circle has two sides, inside and outside. knuckles got it right. and the the doors opened. tails woke up and whispered" did i get it right?"