| Abbreviation | Definition |
|---|---|
| KXQ | King Takes Queen ( Chess) |
| KXR | King takes Rook |
| LCC | London Chess Classic |
| LHOC | Little House of Chess |
| LMCF | Living Memorial Chess Foundation |
| LVCA | Lehigh Valley Chess Association |
| MASCA | Milwaukee Area Scholastic Chess Association |
| MCA | Maine Chess Association |
| MCA | Massachusetts Chess Association |
| MCA | Michigan Chess Association |
| MCC | Memphis Chess Club |
| MCC | Mililani Chess Club, Mililani, Hawaii |
| MCC | Monroeville Chess Club |
| MCCL | Madison City Chess League |
| MCI | McKenzie Chess Institute, Milpitas, California |
| MCIS | Mansfield Chess In the Schools, Mansfield, Texas |
| MCLC | Mata Chess League Co-ed, Concord, California |
| MCO | Modern Chess Openings |
| MSCA | Minnesota State Chess Association |
| MULPIE | My Ultra Large Penis Is Exploding |