Abbreviations (in alphabetic order)
- ICU: Irish Chess Union
- FIDE: International Chess Federation
- LCU: Leinster Chess Union
- MCU: Munster Chess Union
- S<N>: Senior N (years old) - being N or more years old on the day of the cut off date. For instance,
- S65 or Senior 65 means being 65 years old on the day of the cut off date.
- U<N>: Under N (years old) - being N-1 or less years old on the day of the cut off date. For instance,
- U10 or Under 10 is 9 years old or younger on the day of the cut off date.
- UCU: Ulster Chess Union