Ross Taylor and Kane Williamson put on an unbeaten double-century stand for the third wicket as New Zealand dominated day one of the second Test against Sri Lanka in Colombo.
Captain Taylor reached the close on 119 not out and Williamson was on 95 as the pair put on 209.
New Zealand struggled to 14 for two but Taylor with 10 boundaries and Williamson with eight put their side in a position of real authority at 223 for two.
Openers Martin Guptill and Brendon McCullum both fell for four as New Zealand got off to a terrible start.
Guptill opened confidently with a push down the ground for four, but he edged Nuwan Kulasekara to slip off the last ball of the first over.
Three overs later McCullum was adjudged lbw when he was struck on the pads by Shaminda Eranga, but he felt he got an inside edge and replays appeared to back him up.
With runs coming at a relatively sedate pace, Taylor flashed twice in one Eranga over and and got edges over and past the slips for boundaries.
Thereafter it was a case of accumulation before lunch, which they reached on 96, although Williamson did take a liking to Rangana Herath, plundering three crisp boundaries off the slow left-armer.
The pair continued to add the runs in the second and third sessions, compiling them at a steady rate, with Taylor's score coming off 241 balls and Williamson's off 229.
They made the most of Eranga's bowling in particular, who had figures of one for 70 from 14 overs at stumps.