Bejinxer 

One who cheats at board games, particularly scrabble.

He is such a bejinxer

Bejinxer by Narragansett2k15 February 17, 2015

Bejinxed 

Unable to beat a high score while playing the popular game, Bejeweled.

Adrienne: Urgh! I usually beat Sara's Bejeweled score but this week I'm at the bottom of the score board. I've been bejinxed!

Bejinxed by AnaBanana317 March 5, 2010