Mali came from goal down to beat Tunisia 2-1 in the quarter-finals of the African Nations Championship in Rwanda. Mohamed Ali Moncer gave Tunisia the lead in the first-half. But a second-half penalty from Aliou Dieng and a goal with 10 minutes left to play from Abdoulaye Diarra sealed the win for Mali. The victory sets up a semi-final against neighbours Ivory Coast on Thursday. Guinea progressed to the semi-finals of the African Nations Championship by beating Zambia on penalties in their quarter-final. There were chances in the 90 minutes and in extra-time but the match in the Rwandan town of Rubavu ended goalless. Abdoulaziz Keita proved to be the hero for Guinea as he saved a spot kick before stepping up to score the winner. Guinea are now through to face DR Congo in the semi-finals on Wednesday in Kigali. The final of the tournament for locally-based players only, will be in Kigali next Sunday.