  We propose the projected BCS wave function as the ground state for the doped
Mott insulator SrCu2(BO3)2 on the Shastry-Sutherland lattice. At half filling
this wave function yields the exact ground state. Adding mobile charge
carriers, we find a strong asymmetry between electron and hole doping. Upon
electron doping an unusual metal with strong valence bond correlations forms.
Hole doped systems are d-wave RVB superconductors in which superconductivity is
strongly enhanced by the emergence of inhomogeneous plaquette bond order.
