Challenges: The blue bones in Undertale move in a complex pattern, making it difficult to predict their trajectory. This can lead to players getting hit by the bones and losing health.

Solution: To avoid getting hit by the blue bones, players should pay close attention to the pattern of their movement. The bones will always move in a straight line, so players can predict their path and move out of the way. Players can also use the blue bones to their advantage by trapping enemies in between them.

Strategic Resolution: Additionally, players can use the blue bones to build platforms, which can be used to reach higher areas or to avoid obstacles. By understanding the mechanics of the blue bones, players can use them to their advantage and progress through the game more easily.