FT Aberdeen 4-1 Queen of the South - McGinn, Considine, Cosgrove (2) for hosts; Dobbie had levelled with stunner
FT Hearts 4-0 Auchinleck Talbot - Berra, Mitchell, Maclean & Keena knock out juniors
FT Celtic 5-0 St Johnstone - Sinclair hat trick, Brown stunner & Forrest goal put holders into quarter-finals
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Aberdeen 4-1 Queen of the South
Willie Miller
Former Scotland defender on BBC Radio Scotland
Quote MessageHe's taken it well Sam Cosgrove. He gives Martin no chance of getting that one. But I feel a little bit for the visitors. How do you get out of the road of that one? It comes off the body first then his arm. It's a sore one for Queen of the South
Sam Cosgrove (penalty)
It's surely all over now at Pittodrie, but it is a controversial penalty that hands the Dons their fourth goal.
Shay Logan's cross into the midriff of Andy Stirling comes off the midfielder's stomach and on to his elbow and referee Euan Anderson points to the spot.
Despite the visitors' protests, the decision stands and Sam Cosgrove slots the spot kick firmly into the corner for 16th goal of the season and fourth in two games.
Aberdeen 3-1 Queen of the South
Tyrone Smith
BBC Scotland
Quote MessageNiall McGinn has made quite an impact since coming on. Goal taker, and maker, he has completely turned the game for Aberdeen
Image source, SNSNiall McGinn was a half-time substitution for Aberdeen, and has a goal and two assists
Aberdeen 3-1 Queen of the South
Willie Miller
Former Scotland defender on BBC Radio Scotland
Quote MessageYou would imagine there's no way back for Queen of the South now. Niall McGinn comes on at half-time and turns the game completely, scores the goal and supplies the cross to Considine, which he heads in, then picks out Sam Cosgrove to give Aberdeen their third goal
Apologies for the headline of this page being out of date, but we are having some technical issues!
Sam Cosgrove
What a substitution that was by Aberdeen boss Derek McInnes.
He brings on Niall McGinn and the winger scores one and sets up the Dons next two goals.
This time, he sends in an inswinging cross and big Sam Cosgrove heads down and into the net off the turf.
Image source, SNSFT: Heart of Midlothian 4-0 Auchinleck Talbot
Julie Fleeting
Former Scotland striker on BBC Sportsound
Quote MessageHearts were professional, organised, dynamic in all areas of the pitch and it was very difficult for Auchinleck, but their second-half performance they can take great credit from. They did themselves proud, their village proud and everybody in the junior game
Andrew Considine
Aberdeen are back in front as Gary Mackay-Steven rolls a short corner into the path of Niall McGinn and the Northern Irishman, who opened the scoring, curls in a cross that is powered home via the head of Andrew Considine.
It's deja vu as the big defender scored in Aberdeen's replay win over Queens seven years ago.
A comprehensive win for Craig Levein's side and they cruise into the Scottish Cup quarter-finals.
Christophe Berra's header got them up and running, Demetri Mitchell netted the second and laid on the third, scored by Steven Maclean, before the break.
Aidan Keena's 86th-minute effort rounded off the win amid a slew of Hearts chances.
With Hearts down to 10 men for the final 12 minutes after Michael Smith's injury and Talbot and their raucous away support were denied a late consolation when Stephen Wilson was adjudged to have scored from an offside position.
But they can be proud of their team's endeavour and drive right to the end.
Image source, SNSAidan Keena scored Hearts' fourth and final goal
FT: Celtic 5-0 St Johnstone
It's no surprise that you chose Scott Sinclair as your man of the match considering the winger's hat-trick in Celtic's demolition of St Johnstone.
Heart of Midlothian 4-0 Auchinleck Talbot
Talbot denied a consolation goal as Stephen Wilson diverts Mark Shankland's effort into the Hearts net, but the offside flag is up.
Heart of Midlothian 4-0 Auchinleck Talbot
Allan Preston
BBC Scotland summariser
Quote MessageWonderful composure from Keena. Chops one way, back to the other and smashes it - wonderful goal from the youngster. That will give him a lot of confidence. Levein could have left him at Dunfermline, but he brought him back because he has a part to play
Aberdeen 1-1 Queen of the South
Allan Preston
BBC Scotland summariser
Quote MessageWith Dobbie in your ranks, you always have a chance. What a wonderful career he's had - still banging the goals in - 38 now, with still a number of months to go. Target must be 50 now surely
Aidan Keena
Auchinleck are desperate to finish with a flourish and attack the end housing their supporters with great vigour.
Sean McIlroy blasts high and wide from the edge of the bo, and it's Hearts who power downfield and extend their lead.
A lovely jinking run from Aidan Keena bamboozles a couple of Talbot defenders and the teenage striker strokes home.
Image source, BBC SportAberdeen 1-1 Queen of the South
Tyrone Smith
BBC Scotland at Pittodrie
Quote MessageEven some of the Aberdeen fans are applauding that Dobbie strike
Stephen Dobbie
Just when you think the game has swung in the favourites' direction, up steps Queens' Mr Goals to bring the Championship side back into the game.
Veteran striker Stephen Dobbie strides forward and unleashes a drive that is still rising as it flashes past goalkeeper Joe Lewis from 25 yards.
Heart of Midlothian 3-0 Auchinleck Talbot
Michael Smith is down and hurting. Hearts have made all three substitues.
The right-back can't continue, so the home side will play the remaining 12 minutes or so with 10 men.
Niall McGinn
A minute into the second half at Pittodrie and Aberdeen make the breakthrough.
Niall McGinn has come on as a half-time substitute for Stevie May and curls a delightful drive past goalkeeper Alan Martin and into the far corner from the edge of the box, pouncing after the ball was played into his path by a tackle on Sam Cosgrove.
Image source, SNSHeart of Midlothian 3-0 Auchinleck Talbot
Two chances in quick succession for the junior side.
Keir Samson, who has come on for Steven White, makes an instant impact, pouncing on a Steven Naismith mistake and his shot is deflected for a corner by Christophe Berra.
From the corner, Samson heads wide with one of his team-mates appearing to get in his way at the back post.
Heart of Midlothian 3-0 Auchinleck Talbot
Allan Preston
BBC Scotland summariser
Quote MessageIkpeazu has played really well, he's been out a long time. He's frustrated he didn't get his goal, almost got it there. Replacing a 6'4 with another 6'4 in David Vanecek, doesn't get any easier for Talbot