A ding-dong day as Bell finally finds his tune again

England had stumbled to 22 for two, after bowling the tourists out for 308, when Bell took guard on the back of just 56 runs in his previous nine Test attempts.

But in keeping with his team's new brief to attack whenever feasible, he belied any personal anxiety to carry them to 170 for three at one stage.

On a sunny day, during which 15 wickets fell, England took Australia's last five for 43.

Yet they hit snags themselves either side of lunch, Alastair Cook speared a catch to point off Mitchell Starc and Gary Ballance went for a duck in the first over of the afternoon on a pitch of increasingly variable bounce - gloving Josh Hazlewood behind.

Bell and Adam Lyth responded, however, with England's new spirit of adventure - and when the opener slog-swept Nathan Lyon for six, 50 runs had come from the first seven overs of the session.

Lyon (four for 75) got his revenge when Lyth edged an off-break to be brilliantly caught by Michael Clarke, diving one-handed to his left at slip.

But Bell oversaw a second successive half-century stand, adding 97 this time with Root and passing his own 50 when he hit Mitchell Johnson over point for his 10th four from 75 balls.

Bell offered a nod to those musing over his place in the side, obviously aware that the vultures were limbering up, if not yet circling, but was more focused on the team's dominant position than his own riposte.

"When you're not scoring runs as a batter that (speculation) is the case, there's no doubt," he said.

"I knew this knock was going to be very important individually, but that's irrelevant. It's about getting a total to win a game of cricket.

"That's how I saw it. I wanted to go out and play for the team, be aggressive, be busy and that took a lot of pressure off me."

The fourth-wicket pair ended up with the same number of runs from balls faced, and Ben Stokes chipped in importantly too - albeit after surviving on just five when Starc hit him in front on the back foot yet declined, along with all his team-mates, to appeal for lbw.

There was no need for an appeal to account for either Bell or Root, both bowled on the back foot - respectively when Johnson took one away off the pitch to hit middle-and-off for his first wicket of the match and then Hazlewood got one through the Yorkshireman's defence, via his pads.

Jos Buttler joined Stokes, but not for long before he contrived to be caught behind trying to reverse-sweep Lyon.

Stokes had England's third middle-order 50 in his sights when instead he was bowled off an inside-edge trying to drive Starc - and then Stuart Broad holed out off Lyon to a tumbling Hazlewood at long-off.

But Moeen Ali, dropped by Haddin on nought off Lyon, stayed long enough under lights to help big-hitting Mark Wood take the lead above 400.

It all left Australia needing to eclipse the Ashes record run chase, of 404 by Don Bradman's Australian side in 1948, in order to pull off an unlikely win.

Impressive bowling from Broad especially and James Anderson (three for 43) had made short work of the tourists' tail before lunch.

Broad and Wood gave the opposition no leeway from the outset, rewarded with two lbw verdicts and only one run scored - and then Anderson hastened the process again with the second new ball.

It took Brad Haddin 16 balls to get off the mark, achieved on the introduction of Stokes for Broad but in unconvincing fashion with a 'pull' for four off an inside-edge which just missed off-stump and sped past the wicketkeeper.

Haddin followed up with two more conventional boundaries in the same Stokes over, and it was no surprise that Cook recalled Broad as soon as the new ball was taken.

It was Anderson who struck, though, finding Haddin's outside edge on the back foot and Buttler taking a low catch to his right.

After Johnson then chipped Broad tamely to mid-wicket, Anderson ensured the initial three-figure lead when he had Starc edging to third slip for a duck as Australia's last three wickets fell for just four runs.