| | May Tournament Winners at Various Massachusetts Clubs |
| | George Mirijanian |
| | April 2011 |
| | The following are winners in top sections of USCF-rated tournaments held in May at various chess clubs in Massachusetts:
- MCC 27th Anniversary Swiss (MetroWest CC, Natick, 73 players): IM James Rizzitano, 4.5.0.5
- BCF May $10 Open (Boylston CC, Somerville, 42 players): NM Christopher Gu, 3.5-0.5
- BCF Grand Prix #5 (Boylston CC, Somerville, 30 players): IM Jonathan Yedidia, 4-0
- Sven Brask Chess Club Championship (Plainville, 24 players): Andrew Hoy (club champion), David Harris, 5.5-1.5
- Newburyport Chess Club Tournament #106 (21 players): Patrick Sciacca, 6-1
- Waltham Triskaidekaphobia #9 Game/13 (Waltham CC, 20 players): SM Denys Shmelov, FM Steven Winer, 6-1
- Waltham First Friday Tournament #109 (Waltham CC, 17 players): FM Steven Winer, 6.5-0.5
- BCF Quads (Boylston CC, Somerville, 17 players): IM Jonathan Yedidia, 2-0
- Waltham Mid-Spring Game/60 (Waltham CC, 15 players): SM Denys Shmelov, Todd Chase, 2-0
- Mayte in Four Open (Greater Worcester CC, 15 players): Muharrem Brahimaj, 3-1
- May Quick Chess Open (Greater Worcester CC, 13 players): Donna Alarie, 3.5-0.5
- BCF Thursday Night Swiss (Boylston CC, Somerville, 12 players): IM Jonathan Yedidia, 4-0
- MetroWest Chess Club Championship (Natick, 6 players): IM Igor Foygel, 5-0
- MetroWest Chess Club Class Championship (Natick, 6 players): Robert Harvey, 3.5-1.5
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