Robin McBryde has predicted "an arm-wrestle for 80 minutes" when RBS 6 Nations heavyweights Wales and Ireland slug it out at the Millennium Stadium on Saturday.
Wales assistant coach McBryde has stressed the winner-takes-all nature of a game that sees both teams featuring prominently at the tournament's business end.
Ireland are two victories away from a first Six Nations Grand Slam since 2009, while Wales must triumph on Saturday to remain in the mix for silverware.
"It's going to be an arm-wrestle for 80 minutes, and that is what we've prepared for," McBryde said.
"Everything that goes on off the field pales into insignificance, and it's all about what happens on the day.
"They play a big pressure game, and if we can react positively to that and stay in the fight, that will give us a good chance of winning.
"There is a lot of stake. Ireland are on course for a Grand Slam, and just to get away from Cardiff with a win, that's all they will be looking to do. With regards to playing any attractive rugby, that will come second.
"That's the nature of the game at the moment, and that's how teams are wearing each other down, and unfortunately, the spectators have got to pay a price for that."
Ireland have conceded just one try in three Six Nations games this season and an average of only nine points per time across eight Six Nations matches Joe Schmidt has overseen during his coaching reign.
Ireland are also on a 10-Test unbeaten run - England were the last team to defeat them 13 months ago - and McBryde added: "They are on a a bit of a roll at the moment. Ten wins on the bounce speaks volumes.
"This is quite a formidable Ireland team, and we are going to have to be at our best to come close to them tomorrow.
"You have got arguably two of the better teams in the Six Nations, not being disrespectful to anybody else. On our day, I think both teams are capable of beating anybody.
"With regards to motivation, we look at our own situation, and we know a win would give us an opportunity to go for the championship.
"It is a double-edged sword that one. By doing that, we beat Ireland and stop them getting a Grand Slam, but it's all about what we can achieve and gain, as opposed to anything else."