Playing chess with Aussies

A friend introduced me to the Doghouse Diaries webcomic, and I just couldn’t help but repost.  Original site is here: http://thedoghousediaries.com/4477

The author’s postscript:

OK wait, before you send me hate mail for my potentially inaccurate portrayal of an Aussie playing chess, let me just say I’ve never actually played chess with an Aussie, so I’m not certain that they actually say “checkmate”.  Just as they call sunglasses “Sunnies”, and Mosquitos “Mossies”, it’s possible that they call checkmate “Checksies”.  -Raf