The present invention provides a multi-piece solid golf ball having excellent
flight performance and good shot feel. The present invention relates to a multi-piece
solid golf ball comprising a core consisting of an inner core, an intermediate
layer and an outer layer, and a cover, wherein the inner core has a flexural rigidity
(RI) of 20 to 80 MPa, a ratio (RM/RI) of a flexural
rigidity of the intermediate layer (RM) to the (RI) is from
0.6 to 1.4, a flexural rigidity of the outer layer is higher than the (RI)
by 70 to 500 MPa, and the intermediate layer is placed such that the a radius of
the golf ball (rG), a radius of the inner core (rI) and a
radius of a two-layer structured core obtained by forming the intermediate layer
on the inner core (rT) satisfy the following two formulae:
