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1.
1.When a weak chess player challenges any chess player who is above and beyond their capibilities to possibly beat them. 2. when a chess player believes he is better than a stonger opponent(pride but for chess).
"Dude you have some big chessticles to challenge kasparov"

"Your not good its just your chessticles talking"
by Mr.12Inches February 06, 2012
 
2.
A Chess Fag. One who play chess 24/7.
You fucking nerd. Your a chessticle.
by Beanz! February 14, 2005