Aberdeen started the game positively with some probing balls testing the Inverness back four and they won the first corner of the match in the 3rd minute. Unfortunately Clark curled the ball out of play to relieve the pressure and a minute earlier Heikkinen, who was playing at the back, had to look lively to halt an Inverness attack. Inverness then threatened again in the 7th minute when they won a free kick on the right. Fortunately the delivery was poor and Aberdeen cleared easily. The visitors were now starting to take a grip of the game and Brewster rattled the post in the 10th minute following a second corner in as many minutes. The Dons then wasted a 13th minute corner before taking the lead two minutes later.
Whelan then threatened a minute later but again control let him down allowing Brown to gather at his feet. Craig then went close in the 32nd minute firing a low shot in from the left, which Brown did well to block. Seconds later Bayne nipped between two defenders and scooped the ball over Esson and over the bar. Aberdeen then grabbed a second in the 34th minute when Brown made another fine save from a Winter drive but could only beat the ball out into the path of Mackie. Despite appeals for offside Mackie wasted no time in firing the ball into the net, leaving arguments of how active or inactive he was to post match comment. In the final minute Brewster spotted Esson off his line and attempted to lob him from the half way line but was well wide of the target.
With Inverness pressing harder, John Stewart replaced Craig in the 69th minute and a minute later Caley's Hart collected the first yellow of the match and was immediately replaced by McBain. Stewart went close in the 74th minute when he was released on the left by Whelan and fired a low shot across the face of the Inverness goal. Mackie, who was having a superb match, was released by Winter in the 77th minute, skipped inside and set up Whelan 12 yards out. Once again the Englishman failed to find the target and hit the ball wide with only Brown to beat. Three minutes later Derek Adams replaced the Englishman.
Mackie went close to clinching his hat trick in the 87th minute when his perseverance paid off and he collected a lost cause at the bye line, but Brown made a good save to deny him. A minute later Mackie got a deserved round of applause as he was replaced by McGuire. Aberdeen survived an aerial bombardment in injury time and ended the match on the attack as they clinched their 200th Scottish Cup win and a place in Monday evening's quarter final draw.