A Match of Wits (слэш)

How do you stay angry with a man who can’t remember what you can’t forget? When Harry finds Snape unable to recall any of the second wizarding war, he does his best to help restore the man’s memories of his past, and ease him back into wizarding society. A friendship with further potential is born along the way, a less-angry Snape is welcomed into the new peaceful post-war world, and Harry proves that cunning and intelligence aren’t solely traits of the Slytherins. NOTE: this is from the Snarry Big Bang fest.