Shakib & Mahmudullah share record 224-run partnership
They combined with Bangladesh at 33-4
Both men complete centuries
NZ fell from 152-2 in 30th over to 265-8
Mosaddek took 3-13, Taskin 2-43
Taylor top-scored with 63, Williamson 57
Highlights on BBC Two at 23:50 BST (UK only)
Ban 20-3
Oh no! Trent Boult deserves a wicket and he should have one when Mushfiqur pokes to Ross Taylor at slip but the right-hander, diving to his left, makes a meal of it and deflects the ball to the boundary instead of pouching it. Double-whammy.
Charles Dagnall
BBC Test Match Special
Every single delivery, you just think a wicket is coming.
Close to the fourth wicket. Shakib cuts at a short Southee ball and sends it just over the diving Guptill at gully. More hands in air and frustrated groans as the Kiwi opener subsequently beats the bat outside off. Every ball is a serious challenge for the Bangladesh pair.
Target 266
We haven't had a wicket in three overs. In context, this is a minor achievement for Bangladesh. Baby steps from Mushfiqur and Shakib.
Jeremy Coney
Ex-New Zealand captain on Test Match Special
At some stage, the New Zealand bowlers could change to that cross-seam delivery, which is what worked for England.
New Zealand keep their boot firmly on Bangladesh's neck. A rare single comes from an even rarer Southee loose ball that Mushfiqur flicks to fine leg. It is the only run off the over.
Here is how Southee picked up his third wicket of the innings...
Scott Read
BBC Test Match Special commentator
Trent Boult has a massive smile on his face. He said the other day these white balls would never swing. Well, it's nipping back in now.
Target 266
Can't take your eyes off this. Every delivery looks like it might result in a wicket. Boult pins Mushfiqur on the lid with a short ball as he keeps the batsmen guessing.
Even when the Bangladeshi players get a decent amount of bat on the ball, the Kiwi fielders deny them a run, with Broom diving to stop at point.
Jeremy Coney
Ex-New Zealand captain on Test Match Special
Shakib is a very experienced batsman. He has to make a very definite move with his feet. He's got to give himself a bit of time. It's not the pace that should worry the Bangladesh players with Southee - it's the movement.
I was pretty certain that was absolutely plum, but the ball tracker shows that the ball was actually rising over the stumps. However, Bangladesh have no reviews, having used it in a failed attempt to overturn Tamim's dismissal.
Southee sees out a wicket maiden by keeping new man Shakib al Hasan in check. The way this is going, Boult and Southee are going to end this as a contest within 10 overs.
Soumya lbw Southee 3 (Ban 12-3)
And another one gone! This is brilliant stuff from New Zealand and from their two opening bowlers in particular. Southee gets another ball to jag back at speed and Soumya is too slow to react, standing in his crease as the ball slams into his static back pad. No doubts. That is gone. Bangladesh are crumbling.
Jeremy Coney
Ex-New Zealand captain on Test Match Special
It's a great start. New Zealand will feel they're back in the game now. But Mushfiqur is a very compact little fighter. They do have a longish tail, though.
No let-up from the Kiwis as Boult keeps the two batsmen in check. They need to see off this opening salvo. The required total is not huge, but it will start to look bigger and bigger with each wicket.
Here are the two moments that have out New Zealand firmly in charge...
Nope. Didn't carry. Not far off and worth another look, but Soumya Sarkar survives.
Jeremy Coney
Ex-New Zealand captain on Test Match Special
I don't think that carried. I think the gloves, or the body, just took all the sting out of it to carry it through to the slips.
Ban 11-2
Bangladesh are all over the shop. Boult draws another emergency shot from a darting, short ball that Soumya has to fend at to send the ball towards slip. Guptill dives in and claims it, but did it bounce first. I suspect so, but we're going to have a look upstairs...
Target 266
A play and a miss from Mushfiqur Rahim as his innings gets of to a nervy start. It was short of length from Southee but seamed and rose sharply. You'd have to be in incredible nick to get a bat on that.
Jeremy Coney
Ex-New Zealand captain on Test Match Special
He's pushed way ahead of himself and it's caught the outside edge of the bat. There's, again, a little hint of movement away from the right-hander. In England you have to let the ball move and do its work. Two key men out: the dasher and the glue.
Dan Norcross
BBC Test Match Special
That's a tremendous ball from Southee, and it was just the thinnest of edges.