Kane Williamson scored 129 to New Zealand the ascendency in their Test against Pakistan.

Williamson, who was unbeaten on 94 overnight, got to his 23rd Test century on a wicket that gradually became more unpredictable in its bounce.

Meanwhile, Henry Nicholls built on his strong form, scoring 56. BJ Watling (73) and Kyle Jamieson (32) shared a partnership that pushed the Black Caps into a dominant position, scoring 431. Shaheen Afridi was the pick of the Pakistan bowlers with figures of 4-109.

Pakistan were rocked by the early dismissal of Shan Masood, but they managed the pressure of a tricky 20-over period before the close of play well, finishing 30/1.