The effective hard-problem is the derivation of matter out of consciousness, and not the other way around. You could add to that the 'uncanny effectiveness of natural sciences'. The difficulty is that while there are certain starting points ad odes of argument starting from the physical the starting point for consciousness and the modes of development of understanding are not obvious at all. The logic we possess is a logic of things, of objectivities - we can move their representatives around like chess pieces. With consciousness everything must be done on the inside, with the thing in itself, so to speak; representations and symbolisations are out of bounds.