Is Your Computer Blind?

This is from Nun's computer test sets. Set up the position below and see how long it takes for your computer to solve it. The humans seem to be able to smell a stinker instantly even if we can't see it to the very end. If your computer can solve it in under 10 minutes post what your running and the time. None of my engines did it in under 10 minutes on a dual core 2.1 Ghz with 2 gigs of memory. To sum it up. You just need to sneak up on a computer with an exchange sac and the computer won't see it coming.