Three first-half goals secured Llanrwst their place in the next round of the FAW Amateur Trophy.
The hosts from tier 3 started as strong favourites against tier 5 opposition and the opening 45 minutes did show the gap in class.
Benn Lundstram broke the deadlock on 26 minutes when he headed home a cross from the left.
Sam Jones made it two with a superb finish into the bottom right corner before new Roosters signing Sion Sullivan struck the crossbar.
Another cool finish from Jones put the Ardal Northern club three-up at the break.
Llysfaen improved considerably after the interval and overall, considering their injury crisis, did their league proud, but there were no further goals.
It was one-sided as it gets at The Ring where Llay rattled up nine against their visitors.
Jonny Taylor led the goals surge with a hat-trick, while Dean Bryan added a double.
Ryan Merrill, Tom Wells, Josh Russell and Kev Hope all notched one apiece for the rampant hosts.
A tremendous tie at Maesdu Park came down to a penalty shoot-out after a dramatic late fightback from visitors Denbigh.
Underdogs Town made a bright start, Mark Roberts testing keeper Shaun Pearson with a fourth-minute strike.
Danger man Roberts showed his mettle in the 22nd minute when he slotted into the top corner from the edge of the box to put the away side in front.
Tudno livened up and threatened regularly until a Gaz Evans cross set up Dean Seager for a 37th minute equaliser.
Six minutes into the second half the Cymru North side made it 2-1 when Max Moore applied a firm finish.
Moore rounded off a magnificent move on 80 minutes, back-heeling home to give the Seasiders a 3-1 advantage.
Tie over? Not at all, Roberts’ effort came back off the post, but he was there first to tee up Paul Fleming for Denbigh’s second.
With the last kick of the game, five minutes into added time, Daniel Clarke found the net to make it three-apiece and necessitate penalties.
Tudno proved far better from 12 yards, Lee Thomas, Shaun Cavanagh and Guto Williams ensuring they won the shoot-out 3-0. Denbigh missed twice after Pearson brilliantly saved the first.
Alex Boss and Giacomo Mello both struck twice for City in an emphatic win against old cup rivals Hotspur.
Dante Isla was also on target for the hosts, while Liam Morris had a penalty saved for the visitors.
The Tav’s phenomenal start to the season continued with an eight-goal away blitz.
Town have won four and drawn one in the Premier so far with a remarkable 27 goals scored.
However, they were dealt a blow before a ball was kicked when two available goalkeepers were ruled out.
Centre half Jonny Mitchell-Conlan donned the gloves and did not put a foot wrong all game along with a back four of Cooke, Dooley, Davies and Wood.
Nicky Williams put Town 1-0 in front after 10 minutes with a well-taken goal, Tristan Lloyd made no mistake from the spot on 17 and it remained 2-0 up to half time.
The returning Tom Freeman was introduced at half time replacing youngster Kian Doyle Davies, who was carrying a knock, and made an instant impact when he crossed for Williams to score his second.
Jamie Williams entered the game on 65 minutes as he nears full fitness and it did not take long for him to notch his second goal for the club for 4-0,
Nicky Williams completed his hat-trick with a free kick from 25 yards.
Matthew Cooke, Nicky Williams again and a Freeman penalty completed the rout.
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