So I finished the first book (Harry Potter and the Philosophers Stone) yesterday, and of course a lot of things in the book are not in the movie, including the the potion puzzle created by Snape as part of the challenges leading to the philosopher's stone.
Is there a reason why the puzzle never appears in the movie? My first guess is movie budget and movie time, are there any other reasons?
It wouldn't be much MORE relevant to the story, but it would be a nice addition and give a more sense of completion since a lot of things lead to it. As @Ghoti and Chips said, Hagrid says: "Snape is one of the teachers protecting the Stone. He won't steal it.". At the time I tought it was just a general protection, like if someone tried to steal the stone he would be there to help. But now I know that there was a challenge that each teacher prepared.
Also during the challenges each of the main characters shined. Ron in the chess challenge, Harry in the broom scene and Hermione was supposed to shine in the potions one but it didn't happen...