World champions New Zealand are on a record 18-test winning streak and are widely hailed as rugby's best-ever side. As Ireland prepare to face them in Chicago on Sunday (NZ time), the Daily Telegraph asks five experts:

Robbie Deans – Coached Australia to three wins and a draw against the All Blacks

To beat New Zealand, you have got to attack them. More than that, you have to choose where and when to attack them. It is not good enough to think "attack, attack, attack". You have to choose your spots with the utmost care because New Zealand are often happy for you to have the ball. They feast off turnovers. You can be attacking on their 22 and in the blink of an eye they have scored down the other end. Identifying where you attack them is easier said than done. Their Achilles' heel is very hard to locate. There was a match in 2012 where we were ravaged by injuries so we ended up playing a very territory-focused game. It worked but we could not quite get the win and it finished 18-18.

GETTY IMAGES Former England and Lions prop Alex Corbisiero says teams need to deny the All Blacks quick ball.

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It then comes down to belief and fitness. The All Blacks really do have an aura that intimidates a lot of teams. In New Zealand we say it is bone deep. That can really play on teams' minds, particularly if the game remains tight in the second half. All it takes is one individual error, a couple of heads drop and they punish you mercilessly again and again. That type of doubt has to be eliminated. It also needs a full 80-minute performance, which requires a very high level of fitness from the starters and impact from the replacements, because they will stay in there until the death.

Rob Webber – Won 16 caps for England since 2012, including four against the All Blacks

The most important thing to do is knock them out of their stride and stop them playing the game at their own pace. An example of that is the line-out: you watch how often in games they take one really quickly and throw it to the back to Kieran Read before the opposition seem set. It is so quick it looks like it is off the cuff, but I can promise you it is not – they just execute moves so quickly and efficiently, and then you are having to react to them rather than the other way round.

There are ways round that, and for that particular example you find yourself working hard to get in position for the line-out to stop them getting that quick ball off the top they love so much.

It is the same at the breakdown. You have to slow them down as they play with such a high tempo, although it is not all about running – it is much cleverer than that. They have a clear ambition for every phase, and for them it is about getting in at the breakdown and away as smoothly and quickly as possible. You have to compete at the set-piece, rucks and mauls or you will be blown away.

You also have to watch out for their offloading ability, particularly with someone such as Read. You might change your defensive tactics against him, for example, and have one tackler go low to bring him down and another high to prevent the offload. Even then he is such a good player he still might manage it, so your defenders on either side have to be watching the support runners at all times.

Alex Corbisiero – England and Lions prop, started in England's 38-21 win over New Zealand in 2012

You have to see past their aura, and to beat them you have to have dominance in at least two or three facets of the game. You cannot even aim to have parity, because if that is all you can get they will beat you. So at scrum time, you need to be aiming for penalties. At the breakdown you need to get the better of them and stop quick ball. You need to get as many elements of the game in your favour as possible.

You also know they are relentless. You see teams getting the better of them in the first half and then the All Blacks just change their style and come back at you. If you are on top you have to put your foot down and not allow them to recover. As a team they are so rugby-adept they probably have a Plan F to find a way to win.

They have no obvious weaknesses, so if you find one you need to expose it relentlessly. To get the better of them you need 15 guys with the right frame of mind, guys who are ready to play with no fear and refuse to take a backwards step. If you are apprehensive they will expose you.

When we beat them in 2012 everything went our way, but we also scored some tries. A lot of the time when teams have periods of dominance against the All Blacks they do not score enough points to put a real distance between them. We did, and we weathered their storm. I think that they are beatable, as any team are. But you need a bit of luck, and you need everything to go your way.

Rob Baxter – Head coach at Exeter Chiefs

You can go around the houses as much as you like, but I think first and foremost you have to put a game plan together or you have to find a way of scoring in excess of 25 points. If that is not your start point, you are probably going to struggle.

If your start point is that you are going to defend and concede only 10 or 12 points, you are going to find that pretty hard. You will not have to make many mistakes for them to exceed that.

I would start with looking to score 25 points and then build the rest of the strategy – whether that is defence or the kicking game to control territory – around how we can score those points, trying to create 10 opportunities and convert five or six of them.

If you do not set yourselves up to score points, sooner or later they will get you.

Dick Best – Former England head coach, beat New Zealand twice with England and the Lions

The key to beating the All Blacks is to beat them up front. When we beat them at Twickenham in 1993 we picked the biggest pack that England had ever had. Our back row was Ben Clarke, Tim Rodber and Dean Richards, which in those days was enormous. The game plan was simple: play rugby in their half, not make any mistakes and suck them into a good old English arm wrestle. And we did. We bullied them up front and put them under huge pressure. It had been the same with the Lions earlier that year when we beat them up front at Wellington to win the second test, when we dominated possession and territory.

This current All Blacks side are probably the best of the lot, surpassing even the 2005 side that walloped the Lions, and to beat them you have to win the kicking battle. While they are an all-singing, all-dancing team, with a skill set from a different planet, they do kick the ball a lot and if you are not careful you play the whole game in your own half. You have to play the game in their half to stand a chance. In '93 we called it "get out, get down there and get over". Now they call it "exit strategy".