Martin Fourcade of France stormed to victory in the men's Olympic 12.5km biathlon pursuit on Monday, surging clear after the third shoot to repeat his success in Sochi four years ago and claim his third Olympic gold medal.
This makes her the first female biathlete to win the sprint and pursuit double at the same Olympics.
Normally superbly accurate in the shooting, the Frenchman missed three of his 10 shots in Sunday's sprint on the way to finishing eighth, leaving him wondering what had happened as he prepared for the pursuit race 24 hours later.
Dahlmeier, who won five gold medals at last year's world championship, can bring her Olympic haul to three golds if she triumphs in the mass start on Saturday. It was her second gold of these Olympics.
Despite bad weather conditions, the German athlete missed the target only once to clock the best 30:35.3. I just tried to stay focused and now I'm here again.
She said: "It feels really great, it's fantastic".
The errors from the Slovakian opened the door for Dahlmeier to seize control and she duly obliged, coasting to another impressive victory. I felt really, really exhausted before the race and also during the race in the first laps. Dahlmeier never looked back from there, skiing off into an unassailable lead, before firing off a final salvo of five ideal shots, all but sealing her victory.
It's the first Olympic medals for both Samuelsson and Doll.
"It's always, always about your mind, it's always about if you believe and today it was for (a) sure really good fight for gold but for silver I am also happy".
"At the range I felt really comfortable, I know I have good standing shooting, so I looked to my targets, I wanted to hit the middle and it worked", Dahlmeier said. "I don't know if I can say a lot about how I feel".