Hidan vs. Shikamaru

[Xinobi]

Assuming that Shikamaru never seen Hidan's technique/vice versa and in an open field somewhere. All techniques are a go. Go Nuts!

[Summer.]

hidan would pwn him if they would have fight one on one.
shikamaru would be trapped in his rite before he would even uptake what's going on, since hidan needs a single drop of blood.
but in fight where is someone else on shikamaru's side he would have a chance. he would analyse fight between them (like in asuma/hidan case) and come out with impressive tactic (probably...)

[Gaara-Kozokage]

Well im not sure about that... I think Hidan would win but it is going to be a hard battle... Since Shikamaru needs to study hes moves and hidan dont know his moves but hidan could easly kill him but shikamaru doesent have enought chackra to use shadow possesion justsu on Hidan if he dose he aint got much chackra to hold him for long so that makes Hidan the winner.

[majinsharingan]

Yeah Hidan would win.
Hidan would pretty much beat anyone who doesn't know about his technuique.