N.H. Rev. Stat. § 649:4
Whoever attempts to commit any of the crimes defined by this chapter shall be liable to 1/2 the punishment prescribed for the completed crime. In addition to the acts which constitute an attempt to commit a crime under the law of this state, the solicitation or incitement of another to commit any of the crimes defined by this chapter not followed by the commission of the crime, the collection or assemblage of any materials with the intent that the same are to be used then or at a later time in the commission of such crime, or the entry, with or without permission, of a building, enclosure or other premises of another with the intent to commit any such crime therein or thereon shall constitute an attempt to commit such crime.
RSA 649:4
1971, 518:1, eff. Nov. 1, 1973.