“I was playing chess with my friend and he said, ‘Let’s make this interesting’” (joke)

One of the top ten jokes at the 2011 Edinburgh Comedy Awards was:
 
“I was playing chess with my friend and he said, ‘Let’s make this interesting.’ So we stopped playing chess.”
 
British comedian Matt Kirshen told the joke on Twitter on July 25, 2011.
 
   
Twitter
Matt Kirshen
‏@mattkirshen
I was playing chess with my friend and he said, “Let’s make this interesting.” So we stopped playing chess.
11:28 AM - 25 Jul 2011
   
The Independent (UK)
The ‘best’ joke at the Edinburgh Comedy Festival, according to 3,000 fans
Adam Sherwin @adamsherwin10 Wednesday 24 August 2011
(...)
Matt Kirshen
“I was playing chess with my friend and he said: ‘Let’s make this interesting.’ So we stopped playing chess.”
   
BBC News
Nick Helm’s password joke is Edinburgh Fringe funniest
25 August 2011
(...)
5) Matt Kirshen: “I was playing chess with my friend and he said, ‘Let’s make this interesting’. So we stopped playing chess.”
 
Google Books
The Mammoth Book of One-Liners
By Geoff Tibballs
London: Constable & Robinson Ltd
2012
Pg. ?:
I was playing chess with my friend and he said, “Let’s make this interesting.” So we stopped playing chess. Matt Kirshen
   
Google Books
Biteback Dictionary of Humorous Sporting Quotations
By Fred Metcalf
London: Biteback Publishing Ltd
2013
Pg. ?:
I was playing chess with my friend and he said, “Let’s make this interesting.” So we stopped playing chess.
Matt Kirshen, Edinburgh, 2011
 
Twitter
Comics Tell Jokes
@ComicsTellJokes
“I was playing chess with my friend and he said, ‘Let’s make this interesting.’ So we stopped playing chess.”
Credit - Matt Kirshen
2:40 PM - 4 Apr 2018