Brilliant Gareth Bale bagged a stunning brace to sink Austria and leave Wales 90 minutes away from their first World Cup appearance since 1958 after a nerve-shredding 2-1 win.
And Scotland lie in wait if they defeat Ukraine with the rearranged clash between the sides marked in for June.
Bale had Wales two clear before Marcel Sabitzer pulled one back but it wasn't enough for Franco Foda's side who frantically pressed in the closing stages.