Test Your Computer (or Yourself)

I was going to post a link of computer tests hidden within another thread
but I see RookbyCrook has set up his own thread.
I was just too late to edit the title.

I'll come back here later on with an interesting Knight sac
I recently winessed in an OTB Edinburgh Leage game.

Meanwhile here is an interesting mate in 5 for you to solve.

thanks for the support greenpawn34 appreciate it