Shanbally hit back at the Galway side after half-time, scoring six unanswered points to send the game into extra-time.
Jamie Sheedy impressed for the Corkmen with a telling 10-point haul while Kevin Broderick and Brian Cunningham of Tynagh-Abbey/Duniry staged a dramatic finish before referee Johnny Murphy called time.
Bride Rovers have advanced to the quarter finals of the county championship following their disposal of Avondhu in Castletownroche.
Rovers midfielder Barry Johnson spearheaded the attack with a decisive 1-8 against the north Cork outfit. Michael Collins also had a first-half goal.
In the absence of Cork U21 pair Cillian O’Connor and Darragh Fitzgibbon, it was Andrew Cagney who was the leading light for Avondhu, knocking over four points from frees.
Kilbrittan came out on the right side of a tight game against their neighbours Argideen Rangers in the Round 2A tie in Ballinspittle on Saturday.
Kilbrittan went into overdrive in first half injury time, scoring 1-3 in the space of four minutes.
Cian O’Leary and Ross Cashman orchestrated the win with O’Leary scoring the decisive goal in the first half and Cashman hitting seven points.
For Argideen, John Michael O’Callaghan hit an incredible 2-10.
Blackrock saw off a poor Ballymartle side in round 2B of the IHC in Ballygarvan on Saturday.
Roy Power lead the way for the Rockies as he chipped in with seven points. Cathal O’Leary and substitute Tadgh Deasy got two apiece.
Ballymartle offered some resistance through Ken O’Callaghan and Ruari Dwyer but captain Darragh O’Callaghan was shown a red card 12 minutes from time.
Ballygarvan emerged comfortable winners over Na Piarsaigh in a high-scoring game at Páirc Uí Rinn last night.
Mark Kenefick, Gary White and Stephen White totaled 5-13 between them for Ballygarvan
Na Piarsaigh had Darragh Hannafin dismissed but four second-half goals made the scoreboard respectable.
After a disappointing defeat to Na Piarsaigh in the opening round, Kiskeam upped the ante against Castletownbere and advanced to the third round of the championship.
The West Cork side had no response as Kiskeam knocked over successive points and Michael Herlihy found the back of the net to stage a runaway victory.
Castletownbere got an early score through Dave Fenton and there was only a point between the sides in the early stages of the first half. It was at that point that Kiskeam began to dominate and by the second half, there was no doubt as to how the game would end.
Mayfield produce a big performance against Kinsale in Shanbally on Saturday evening and will now march on to Round 3 of the Championship.
Mayfield raced into a 1-5 lead with the outstanding Maurice Barry knocking in the goal. Kinsale got going second half as Ricky Hannon hit seven points but Nicky Kelly’s goal ensured that city side advanced
Aghabullogue saw off a dogged Adrigole side to progress to the next round of the Intermediate Football Championship.
Adrigole were first to pounce when David Harrington smashed the ball into the net after it bounced awkwardly for Aghabullogue defenders.
But Aghabullogue turned up the heat in the second half, with John Corkery netting twice.