The Colle System is one of the simplest of all openings to learn, and, against casual play you’ll sometimes get the opportunity to whip up a dangerous kingside attack very quickly.

This week’s puzzle, which arose from this opening, is a great test of your defensive skills. It’s Black to play: I’ll tell you who the players were next week.

White’s sacrificed two knights here and is now threatening mate.

How would you defend here? How do you foresee play developing over the next few moves. Look at all White’s attacking tries. Do you think White’s winning? Can Black bale out for equality? Or could he meet all the threats and come out on top?

Do let me know what you think!