31-year-old electrical engineer Patrick Carthy has been named Ireland's Smartest after the nation's most intelligent quizzers were put through their paces over the past 10 weeks.
The series finale - presented by quizmaster Claire Byrne - aired on Sunday on RTÉ One.
The other two finalists were 56-year-old Brian Craythorne, a civil servant from Belfast and 44-year-old Niall Duddy, a maths teacher from Galway.
Presenter Claire Byrne said: "What a rollercoaster it has been on the road to the final and each contestant has certainly earned their place in the top three! The questions became tougher with each round and the competition was stiffer as we moved from the heats to the final.
"Patrick kept his nerve the whole way through and has truly proved himself to be Ireland's Smartest. It was a privilege to meet all of the players who were brave enough to face off against some of the best and brightest in the country to shoot for the grand title.
"But what a worthy winner we have found in Patrick Carthy, who was calm and focussed to the last second of the game.
"Congratulations Patrick - you truly are, Ireland's Smartest!"
In the wake of his victory, Patrick Carthy said: "I was delighted to win the series particularly against such excellent opponents.
"Like in our first-round match, the final round against Brian was incredibly close and could have gone either way. It was great to get the opportunity to take part in Ireland's Smartest as I’ve always enjoyed watching television quizzes.
"The format was fun to play even with the added pressure of the studio lights and cameras," he added.
"There has been great support throughout the series from friends, neighbours, work colleagues and family, in particular my mother Mary."
