Llanrug made it four league wins on the bounce and scored nine goals at home for the second successive game.
Jonathan Sadler notched a hat-trick, Kevin Lloyd and top-marksman Jamie McDaid added two apiece and Llion Jones and Carl Griffiths contributed a single each.
Steven Tindall grabbed a scant consolation for Llandegai.
Three first-half goals clinched the points for Llanberis.
ion Owen (2, 1 pen) and Wil Williams delivered the goods for the Darans.
Tomos Jones was shown a red card for the hosts.
Another brilliant performance made it five wins out of five in 2024 for Rovers.
Jordan Pritchard, Jamie Patterson and Kieran Freeman netted for the hosts, Calum Thomas having given Gaerwen a 17th minute lead.
Before kick-off both Bontnewydd and CPD Boded remained unbeaten in Division One this season – and at the final whistle on Saturday, that was still the case.
There was no separating the title rivals after 90 minutes, Jordan Edney edging the visitors in front on 52 only for captain Luke Phillips to level after 55.
Dion Jones levelled six minutes into added time at the end of the 90 to rescue a point for Rangers.
Earlier, Callum Queen had handed Holyhead a 27th minute lead before Alan Owen made it 1-1 after 34.
Queen struck again before the interval with his 11th goal of the season and that looked like being enough before Jones’ last-gasp equaliser.
Marquis Holland’s 72nd minute net-finder won the game for a Llanfairpwll side which recovered from two-down to wrest the points at Maes Eilian.
Blaenau took command with goals from captain Jack Diamond on 36 minutes and an Aled Ellis penalty on 40, but Carwyn Roberts got Pwll back into it by scoring on the stroke of half time.
Roberts made it 2-2 on 63 before Holland clinched it with his ninth goal of the campaign.
Hat-trick hero Owen Pritchard was Llanystumdwy’s star with goals in 12, 40 and 45+3 minutes, the latter a penalty.
Llion Roberts replied for Llangoed on 69, but that was all the hosts could manage.
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