He definitely didn't go to 12 Grimmaud Place. > “Where will you go, Dumbledore?” whispered Professor McGonagall. “Grimmauld Place?” “Oh no,” said Dumbledore with a grim smile. “I am not leaving to go into hiding. read more
The word “hide” is very misleading. Dumbledore did not hide. He traveled the country gathering intelligence about Voldemort, and what his plans were. This is likely when he discovered so much about the Horcruxes, and Tom Riddle’s life before his rise to Dark Lord. read more
I don't think Dumbledore hide in Grimmauld Place. As I see Dumbledore.. he's not a hidding person. read more