Refers to having a pointless debate with somebody utterly ignorant of the subject matter, but standing on a dogmatic position that cannot be moved with any amount of education or logic, but who always proclaims victory.
Origin:
"Debating creationists on the topic of evolution is rather like trying to play chess with a pigeon; it knocks the pieces over, craps on the board, and flies back to its flock to claim victory." -- Scott D. Weitzenhoffer (From an Amazon.com book review)
Man, trying to explain to those moon landing deniers that the Apollo program was real is like playing pigeon chess -- all they do is knock the pieces over and crap on the board.
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"