New Zealand 370 and 121 for 4 (Williamson 45*, Pattinson 3-29) trail Australia 505 (Burns 170, Smith 138, Wagner 6-106) by 14 runs
Scorecard and ball-by-ball details
As much as this series has packed into two Test matches, one element missing was high pace. James Pattinson changed all that on the third evening at Hagley Oval, summoning a frightening spell that cut deep into New Zealand's batting and helped bring about the end of Brendon McCullum's storied international career.
On a day when Neil Wagner's persistent short-ball attack had already been rewarded with a flurry of wickets after lunch, as New Zealand restricted Australia's first-innings lead, Pattinson showed how speed can transcend conditions. His hostility and reverse swing left the hosts 14 runs in deficit with only six wickets remaining ahead of day four.
Always a rhythm bowler, Pattinson had not quite found his form on day one and also bowled the fateful no-ball that cost Australia McCullum's wicket. This time his pace and seam position were very much in sync, accounting for Martin Guptill, Tom Latham and Henry Nicholls before boring in at McCullum.
While he did not take the wicket, Pattinson gave McCullum plenty to think about and on 25, the batsman slogged at Josh Hazlewood and was wonderfully caught by David Warner at midwicket. He and Steven Smith shook the departing McCullum's hand but both know that victory and the world No. 1 Test ranking is now within reach.
Adam Voges and the nightwatchman Nathan Lyon had played serenely in the early part of the day, but Voges' departure to the pull short, after the fashion of Joe Burns and Smith, heralded the loss of quick wickets. In all, Australia's last six wickets tallied only 67.
Wagner's energy and commitment to banging the ball into the pitch was not sophisticated, but over time it worked wonders on a surface given to the occasional bout of variable pace. His celebrations grew in exuberance at each wicket, as Australia's advantage was limited.
For Voges, it was another instance of applying the sturdy, calculated approach that has brought him runs at a scarcely believable rate in recent times. Momentarily his Test batting average again cleared 100, the only man to occupy that rarified air above Sir Donald Bradman.
There had been more ambitious hopes for New Zealand when play began, following up on last evening's dual dismissals. Wagner resumed with a similar line of attack, peppering Voges and Lyon with short stuff.
Partly through determination and good technique, partly due to the docile character of the pitch, the batsmen were able to stand up to this examination, as Lyon repeatedly covered the bounce and dead-batted it near his feet.
Runs flowed a little more freely after those early overs, though neither batsman played with extravagance. Voges offered a neat cut shot here, a checked drive there, while Lyon worked the ball around with the earnest intent of a man who would like to bat further up the order more often.
Trent Boult had one concerted lbw appeal and review against Voges, but video evidence had the ball not swinging back enough to hit the stumps. It was telling that McCullum was reduced to bowling himself with the nightwatchman at the crease, and the Hagley Oval crowd raised a cheer when he beat Lyon's outside edge.
At the other end, Williamson would tempt Lyon into following a ball angled across him, and McCullum swooped nicely for the catch. Mitchell Marsh had a 21-ball sighter before the interval, and had the potential to lift the scoring rate dramatically when play resumed.
Instead it was Voges who tried to push things along, and departed when Latham timed his leap to catch a flat pull shot at midwicket. Marsh also tried to take on Wagner, and likewise arrowed a catch to the inner field on the leg side.
Pattinson broke the sequence with a sliced drive to point, before Peter Nevill's attempted upper cut settled into BJ Watling's gloves. Josh Hazlewood offered a simple catch to McCullum at slip to hand Wagner his sixth wicket, a deserved analysis.
It was immediately apparent that Pattinson was bowling with good pace and a hint of movement, and the ball was still new when he found Guptill's outside edge. Latham and Kane Williamson endured for a while, and Australia briefly pondered a review when Jackson Bird hit the No. 3 on the back pad.
Smith brought Pattinson back and he soon had Latham's wicket when some extra bounce resulted in a glove down the leg side. Nicholls was tightened up by a disciplined line and some pronounced reverse swing, before Pattinson angled one wider and was rewarded with a waft, an edge and a catch for Smith.
McCullum's arrival was warmly received, and for a while he seemed to be building something. He eschewed the extravagance of day one, instead mixing defence with calculated attack, but Pattinson did not give him a moment's peace as Smith allowed the spell to stretch into a seventh over.
There was one raucous lbw appeal denied, and one catch turned down after replays showed the ball had gone from bat to ground to boot - shades of Marsh's ODI dismissal in Hamilton. Eventually Pattinson was spelled, and when McCullum hoisted Hazlewood over the midwicket fence New Zealand still dreamed.
Next ball, however, Warner swooped, ending a glittering career and putting the prize of top spot well and truly within Australia's sights.