Following Scotland's 1-0 win over Austria, the Republic of Ireland will travel to Glasgow on Tuesday night in round two of the World Cup play-offs with a place at next summer's finals in Australia and New Zealand in their sights.
However, it's not exactly straightforward for Vera Pauw's team.
They have to win of course, but victory is no guarantee of a place at the tournament. Only the top-two ranked teams of the three play-off winners will seal their ticket, with the other side heading to the ten-team inter-confederations in New Zealand this February.
To rank the three play-off winners, group results plus the result of the second round of the play-offs are combined.
Some groups had five teams and others had six, so any group matches against the teams who finished sixth are discounted. The results from the first round of the play-offs are also discounted.
Once the points are tallied up, the top two qualify and the third-placed winner goes to New Zealand to play one or two games, depending on a draw.
Wins after extra-time on Tuesday night are worth three points, but victories on penalties are counted as draws and worth only a single point in the context of rankings.
Ireland will need results to go their way to sneak into the top two. In a nutshell, if the Girls in Green win and either Switzerland or Iceland slip up against Wales or Portugal respectively, Ireland are going to the World Cup.
The advantage for Ireland is, kicking off two hours later than the other two matches, they could know exactly what is required against Scotland to book a direct ticket to the finals.
Here's how the table looks ahead of the three second-round play-off matches.
So strap yourself in for a night of twists and turns. Scotland v the Republic of Ireland kicks off in Hampden Park at 8pm and is live on RTÉ2 and the RTÉ Player, as well as RTÉ 2fm.
Follow Scotland v Republic of Ireland via our live blog on RTÉ.ie/sport and the RTÉ News app, watch live on RTÉ2 and the RTÉ Player, or listen to live radio commentary on RTÉ 2fm's Game On.
