• It seems to me that:

Question related to mission Bullet and wall

 

It seems to me that: checkio([[0, 0], [1, 1], [1, 1], [3, 3]])==True checkio([[0, 0], [1, 1], [2, 2], [3, 3]])==False checkio([[0, 0], [1, 1], [3, 3], [2, 2]])==True but many accepted solutions do not give these answers.