A group of five people being led out of a coastal cave are trapped behind a pregnant woman who has become stuck in the mouth of that cave.
In a short time high tide will be upon them and unless she is unstuck they will all be drowned – except the woman, whose head is out of the cave. Fortunately (or unfortunately!) someone has with him a stick of dynamite. There seems no way to get the pregnant woman loose without using the dynamite which will inevitably kill her; but if they do not use it everyone else will drown.
What should they do?