Helga Sverrisdotir scored 20 points as Iceland beat Ireland 68-56.
Sverrisdotir, despite being only 17 years of age, also had 13 rebounds and seven assists.
Iceland coach Gudjon Skulason has described Saturday's clash against Norway as a "must-win game" if they are to progress from EuroBasket Division B.
His side go in to the encounter on the back of a narrow 66-61 defeat away to the Netherlands in Group A.
