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Teams from outside Dublin and Belfast competed, but played their home matches in either Dublin (if based in the Republic of Ireland) or Belfast (if based in Northern Ireland).
Belfast Celtic and Distillery ended up sharing the title. Celtic won the first leg 2–1, and a date could not be found for the second leg, so both teams decided to share the trophy.
Results
First round
Teams that were at home in the first leg listed on the left.
Despite losing their ties, Shelbourne progressed to the quarter-finals as "best losers".
Darkness prevented Shamrock Rovers and Distillery from playing extra time in their second leg, so it was decided that both teams would advance to the quarter-finals.
Quarter-finals
Teams that were at home in the first leg listed on the left.