A massive win for second-place Cerrig in this title race clash at The Flyover
Tegid Williams handed the visitors a 20th minute lead before a Gavin Owen own goal after 27 levelled the scores.
However, within a minute Tirion Griffiths made it 2-1 and that was the end of the scoring.
NFA hit seven at the Recreation Ground and edged up to third spot in the Premier.
If the Rhyl side won their two games in hand on second-place Cerrigydrudion they would go top.
It was a ruthless display from the sky blues on Saturday, Matthew Robinson netting four times to boost his league goals total for the season to 12.
Chris Durkan, Antonio Jacovelli and Jay Whitehouse added one apiece for the visitors, all this after Osian Roberts had given Llanfairfechan a 15th minute lead.
Leon Gierke’s goal in the 93rd minute sealed a dramatic late victory for Llansannan.
The visitors had Luca Querci sent off for a second yellow card on 77 minutes, while Elis Vaughan was shown a straight red for the hosts after 87.
Goals from Connor Morris (penalty) and Oliver Gray won this match for Kinmel Bay.
The game was covered in depth by Grassroots North Wales last weekend.
Kieran Ellis bagged a double as Bow went four points clear at the summit with an unbeaten record of 15 wins and a draw.
Ellis struck on 31 and 40 minutes, Charlie Jones having earlier put the visitors in front with eight on the clock.
Sub Adam Williams rounded off the scoring for the home side
Five-goal Harrison Bellis passed the 50-mark for the season by going nap in a thumping win for fourth-place Y Glannau at The Oval.
Bellis is now on 53 goals from just 23 appearances this season, having bagged 32 in the league.
His five-timer in Llandudno saw goals scored on 5, 13, 17, 83 and 88 minutes.
Also on the mark for the St Asaph visitors were Joey Fontana, Ashley Bamber, Luke Stanley and sub Andrew George.
Jay Sutton (2) and Jamie Grimshaw responded for Penrhyn.
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