 Competitions are held throughout the year mostly run by individual clubs or by provincial Unions such as the City of Dublin, Cork Congress (Mulcahy Cup), Bunratty, Limerick Open, Gonzaga Classic, Galway Congress, Drogheda, Malahide, Bray, Kilkenny Congress, Ulster and Leinster Championships.A number of significant tournaments have been held in the past

The "Leinster Chess Union" run chess leagues.There are six divisions, a number of them named after significant figures in Irish Chess.