Couple of questions after CoS reread

[potioncat]

No: HPFGUIDX 125477


 
> Alla:
 
> I think I will settle on the idea that Dumbledore knew that 
Riddle's  memory or host or something somehow made it to Hogwarts, 
but had no idea what it was, unless somebody will unconvince me. :o)
> 
snip
> Now, Riddle is not the most reliable canon character, nevertheless 
> he does say that Dumbledore sent them. I don't know...  
„« 

Potioncat:
It¡¦s like Harry and the map. Harry sees Barty Crouch on the map in 
Snape¡¦s office. The map doesn¡¦t lie, but Harry knows Mr. Crouch is a 
sick man, and wouldn¡¦t be able to sneak into Hogwarts... It doesn¡¦t 
make sense. Later, he¡¦ll find out it¡¦s a different Barty Crouch.

DD is certain LV!Riddle opened the chamber this time, but knows LV is 
in Albania. It doesn¡¦t make sense. He must be wondering about his 
sources, about LV's abilities... It isn¡¦t until later that he finds 
out about Diary!Riddle. 

Tom Riddle seems to think DD sent the Hat, but that¡¦s a boy¡¦s best 
guess.  I think the hat came on a different magic. It may be one that 
DD put in place, knowing that Harry might need magical help. But I 
don¡¦t see that DD planed any of this as a test.
Potioncat