Apparating within Hogwarts in the Half-blood Prince
129899
How did Montague Apparate into the Hogwarts bathroom?
30291
How many ways are there of getting to Hogwarts?
4881
Why exactly did the Sorting Hat originally want to put Harry in Slytherin?
26863
How does Hogwarts manage to track the Dursleys' and Harry's movements in "The Philosophers Stone"?
108381
Why did Dumbledore tell Harry there were 6 Horcruxes when he already knew Harry was a horcrux?
92425
Why didn't the Death Eaters capture Harry Potter at the end of the Half-Blood Prince?
13819
How did Harry become a Horcrux?
107879
Can House-Elves Side-Along Apparate/Disapparate to/from Hogwarts?
77755
Role of games within games
58203
Why did the Half Blood Prince leave his book in the Potions dungeon?
56736
What Protects Hogwarts from the Forbidden Forest Creatures?
17249
How did Harry get his hair cut at Hogwarts?
155796
How is "The Trace" applied in Harry Potter?
157464
Harry Potter: Why 7?
16734
Does each new Horcrux take half of Voldemort's remaining soul, thus taking a smaller piece each time?
29784
Are there canon examples of students permanently transferring from one school to another in Potterverse?
32249
How can Voldemort trust Snape after the events of the first book?