West Indies, looking to win their series 2-0, thanked a pair of morning wickets from Narsingh Deonarine and Tino Best to leave New Zealand struggling to establish a strong lead on the third day of their second Test in Kingston.
The Kiwis had been 110 ahead overnight at 59 for 2 but by lunch they were hanging on grimly at 109 for 7, a lead of 160.
Best struck twice in the same over as the tourists served up some erratic batting - rather as had the hosts on Friday, when the Kiwis bowled them out for 209 - 123 of which went to Marlon Samuels.
Part time offspinner Deonarine - posting innings figures through to lunch of 4/24 - and Best were in fine fettle as they whittled down the middle order.
After seeing off openers Martin Guptill and BJ Watling Best had Neil Wagner caught for six in the 32nd over and two balls later had skipper Ross Taylor removed in similar vein as wicketkeeper Denesh Ramdin took the catch.
Deonarine was at it again as he had Brendon McCullum offer a bat-pad catch to forward short leg on 19 before also claiming Williamson's scalp as he drove to Darren Sammy.
Sunil Narine then bagged the wicket of Kruger Van Wyk, who holed out to deep square leg after making five, to send the hosts in for lunch with an appetite as a winnable deficit hovered into sight.
