Graphing 3D inequalities

Hi,

How do I plot the region satisying the 3 inequalities?

1) y+z-2yz>0.5
2) x+z-2xz>0.5
3) x+y-2xy<0.5

where 0<x,y,z<1

Expressing them in one variable (ie 1 in terms of z>(0.5-y)/(1-2y) may alter the direction of my intended inequality depending on the range of y in the denominator.

Thank you.

This kind of inequalities is too complex and our Graphing Calculator 3D cannot handle it currently!
Perhaps in a future version we will add it!