Multi-piece solid golf ball

A multi-piece solid golf ball comprising a core, an intermediate layer, and a cover, the core being formed of a rubber composition into a single layer or a plurality of layers, the intermediate layer and the cover being both formed of a single-layer resin composition, wherein a relationship between an initial velocity of the core, an initial velocity of a sphere (intermediate layer-encased sphere) obtained by encasing the core with the intermediate layer, and an initial velocity of a sphere (ball) obtained by encasing the intermediate layer-encased sphere with the cover satisfies the following two conditions:

• (initial velocity of ball)<(initial velocity of intermediate layer-encased sphere)
• 0.60≤(initial velocity of intermediate layer-encased sphere)−(initial velocity of core)≤1.00 (m/s)
• and a deflection when the ball is compressed under a final load of 1,275 N (130 kgf) from an initial load of 98 N (10 kgf) is 3.00 mm or less, and a specific gravity of the intermediate layer is 1.05 or more.