[wfurney]

I have never heard of Prolog before so this was cool. I did think the "make sure the flashlight is turned on" point was kind of confusing. I have the battery and flashlight, but there's no way to turn it on. I couldn't run it with gprolog but swipl works fine.

[klibertp]

The flashlight should be automatically on in this case:

    flashlight_on :- at(flashlight,holding), at(battery,holding).

This condition is checked when you try to reach "woods" and "woods_1". (And that's the only place you can test if the flashlight is on, because it's otherwise not checked and doesn't change any of the descriptions.) The flashlight doesn't save you from dying in the "deepforest_X".