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Prop Christian Welch knows something must be done to fix the Maroons' attack, but finding that answer is the challenge for the Queensland brains trust if they're to have any hope at preventing a NSW series clean sweep.

Queensland have scored just one try and created two line breaks in two Origin games this series and the big question they must answer ahead of Game Three is, how do they find more points?

"And you're asking a front-rower who has scored four tries in 110 games? I think you're asking the wrong guy," Welch said.

"Lucky we've got a really good brains trust there in JT (assistant coach Johnathan Thurston) and Greeny (coach Paul Green) and plenty of external guys like Billy Slater and Cam Smith who are so passionate about Queensland that I'm sure they will go away tonight and analyse ways to improve our attack.

"But yeah it's above my pay grade that question, to be honest."

Queensland's problem is as much about their attack which often lacks fluency as it is a testament to the Blues' desperation in defence.

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The Maroons certainly created more chances in Origin II at Suncorp Stadium on Sunday night than they did in Townsville's 50-6 flogging, but the fact they became the first scoreless Queensland side in history on home soil suggests something is not right when they get into their attacking zone.

While Green has twice had to play Valentine Holmes at fullback after being named on the wing due to injuries in camp, the Maroons don't seem to have men on the edges who hit the line at speed or any set plays with attacking shape to threaten the NSW defence.

Halves Cameron Munster and Daly Cherry-Evans have often been caught scheming across the field without any hole runners, making them easy targets for the Blues to shut down.

Welch believes the hunger is in the Maroons side – and they certainly matched the NSW intensity throughout Game Two – but they don't possess the quality of NSW to ice their opportunities.

"We had four opportunities go up to the box and didn't get any of them and they're a really classy side and it showed tonight and they were deserved winners," he said.

"They're a really good side and so dangerous all over the park.

"Yeah they've been really desperate, they're really hungry. I think it would be hard to say they're hungrier than us, I think we're working really hard as well.

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"They took their opportunities and we weren't able to. They're playing really, really good football, they're a quality side.

"There's so much star guys who can hurt you right across the paddock for them, we have to really aim up for game three."

Welch said he was surprised by how NSW had reinvented the way they play the game, with their back five instrumental in driving the Blues out of their danger zone.

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"I suppose they're redefining some of the roles for the positions of the guys," he said.

"I've really noticed their back five do a lot of dirty work for them. By dirty work I mean yardage and really get them going probably the first four tackles.

"Their front-rowers and ruck players have a bit of a different role, probably more defensive orientated where they can really aim up and get some line speed and that's working for them to be honest.

"A guy like Brian To'o, you've got to respect how hard he runs and how effective he is in yardage and generating momentum."