A golf ball has a large number of dimples 10 on a surface thereof. The dimples 10 include a plurality of small dimples 10S each having an area of less than 8.0 mm.sup.2, and a plurality of large dimples 10L each having an area of equal to or greater than 8.0 mm.sup.2. A ratio PS of a sum of areas of all the small dimples 10S to a surface area of a phantom sphere of the golf ball is less than 2.0%. The number NL of the large dimples 10L is equal to or greater than 250 but less than 450. The number NL of the large dimples 10L and a degree G of uniformity of areas of the large dimples 10L satisfy the following mathematical formula (II):
G<0.0032.Math.NL+0.26(II).

A golf ball 2 includes an inner core 4, an outer core 6, a mid layer 8, a cover 10, and dimples 12. A diameter D1, a volume V1, a hardness H1o at a central point, a boundary inside hardness H1in, and a hardness difference De1 of the inner core 4; a volume V2 (mm.sup.3) and a hardness difference De2 of the outer core 6; a thickness Tm and a hardness Hm of the mid layer 8; and a thickness Tc and a hardness Hc of the cover 10 meet the following mathematical formulas.

1.0<V2/V1<7.0

De2De1<0

600<(H1o*H1in)*(D1/2)/2<1000

620<Tc*Hc*Hm/Tm<900

The dimples 12 include a plurality of small dimples each having an area of less than 8.0 mm.sup.2.

A golf ball 2 includes a core 4 and a cover 6. An amount of compressive deformation Df of the core 4 is equal to or greater than 4.1 mm. A nominal thickness T of the cover 6 is equal to or less than 1.70 mm. The golf ball 2 has a plurality of dimples 8 on a surface thereof. A value V calculated by the following mathematical formula is equal to or less than 290.

V=N*So/Bb

In the mathematical formula, N represents a total number of the dimples 8, So represents a ratio of a total area of all the dimples 8 relative to a surface area of a phantom sphere of the golf ball 2, and Bb represents an average (mm) of thicknesses B of the cover 6 immediately below deepest points of the dimples 8.

A golf ball 2 includes an inner core 4, an outer core 6, a mid layer 8, a cover 10, and dimples 12. A diameter D1, a volume V1, a hardness H1o at a central point, a boundary inside hardness H1in, and a hardness difference De1 of the inner core 4; a volume V2 (mm.sup.3) and a hardness difference De2 of the outer core 6; a thickness Tm and a hardness Hm of the mid layer 8; and a thickness Tc and a hardness Hc of the cover 10 meet the following mathematical formulas.

1.0<V2/V1<7.0

De2De1<0

600<(H1o*H1in)*(D1/2)/2<1000

620<Tc*Hc*Hm/Tm<900

A dimple pattern of each hemisphere of the golf ball 2 includes three units rotationally symmetrical to each other.

A golf ball 2 includes a core 4, a mid layer 6, and a cover 8. A difference DH in hardness between a surface and a central point of the core 4; a thickness Tm (mm), a hardness Hm, and a volume Vm (mm.sup.3) of the mid layer 6; and a thickness Tc (mm), a hardness Hc, and a virtual volume Vc (mm.sup.3) of the cover 8 meet the following mathematical formulas.

(DH*Hm)/(Hc*Tc)>63

3.0<((Vm*Hm)/(Vc*Hc))<7.5

A dimple pattern of each hemisphere of the golf ball 2 includes three units that are rotationally symmetrical to each other. A dimple pattern of each unit includes two small units that are mirror-symmetrical to each other.

A golf ball 2 has a plurality of dimples on a surface thereof. A ratio So of a sum of areas of the dimples relative to a surface area of a phantom sphere of the golf ball is equal to or greater than 81.0%. A ratio Rs of a number of the dimples each having a diameter of equal to or greater than 9.60% but equal to or less than 10.37%, of a diameter of the golf ball, relative to a total number of the dimples, is equal to or greater than 50%. A dimple pattern of each hemisphere of the phantom sphere includes three units that are rotationally symmetrical to each other. A dimple pattern of each unit includes two small units that are mirror-symmetrical to each other. The golf ball meets the following mathematical formula (1).

Rs2.5*So+273(1)

A golf ball 2 includes a core 4, a mid layer 6, and a cover 8. A difference DH in hardness between a surface and a central point of the core 4, a thickness Tm and a hardness Hm of the mid layer 6, a thickness Tc and a hardness Hc of the cover 8, and an amount of compressive deformation Sb of the golf ball 2 meet the following mathematical formulas.

(DH*Hm)/(Hc*c)>80

((Sb*c)/(Hc*Hm*Tm))*1000>0.75

The golf ball 2 further includes a plurality of small dimples each having an area of less than 8.0 mm.sup.2 and a plurality of large dimples each having an area of equal to or greater than 8.0 mm.sup.2.

A golf ball 2 has, on a surface thereof, a plurality of types of dimples 8 having different diameters from each other. A standard deviation V of the volumes of all the dimples 8 is equal to or less than 0.095 mm.sup.3. The ratio (V/D) of the standard deviation V to a standard deviation D of the diameters of all the dimples 8 is equal to or less than 0.35. Preferably, the shape of each dimple 8 is a portion of a spherical surface. The standard deviation V is preferably equal to or less than 0.087 mm.sup.3. The ratio (V/D) is preferably equal to or less than 0.29.

A golf ball having a core, a cover and at least one intermediate layer therebetween satisfies specific conditions concerning the relative surface hardnesses of the core, the intermediate layer-encased sphere and the ball, and has a specific core hardness profile. Also, the value V/H, where V is the initial velocity of the ball and H is the deflection of the ball under specific loading, is set within a specific range. The ball has a construction which, when used by the ordinary amateur golfer, reduces the spin rate on full shots, enabling good distances to be obtained both on shots with a driver and on shots with an iron. The ball also has a soft yet crisp feel at impact.

In a multi-piece solid golf ball having a rubber two-layer core consisting of an inner layer and an outer layer, a cover, and at least one intermediate layer therebetween, the inner core layer has a diameter of at least 30 mm, the difference in JIS-C hardness between the center of the inner core layer and the surface of the outer core layer is at least 25, the ball satisfies the relationship A/B1.5, where A and B are the deflections of, respectively, the inner core layer and the two-layer core when compressed under specific loading conditions, and the intermediate layer has a higher material hardness than the cover. This ball enables mid- to high-level golfers both to achieve even longer distances and to maintain the spin performance on approach shots at a high level.