Golf ball

A golf ball comprising:

• a core,
• an inner cover positioned outside the core, and
• an outer cover positioned outside the inner cover,
• wherein:
• the core has a center and a mid layer positioned outside the center,
• the center has a diameter of 1 mm or greater and 15 mm or less,
• the mid layer has a thickness of 11 mm or greater and 20 mm or less,
• the center has a central point having a JIS-C hardness H1 of 20 or greater and 50 or less,
• a difference (H2−H1) between a JIS-C hardness H2 of a surface of the center and the hardness H1 is equal to or greater than 1 and equal to or less than 7,
• a difference (H3−H2) between a JIS-C hardness H3 of an innermost part of the mid layer and the hardness H2 of the surface of the center is equal to or less than 35,
• a difference (H4−H3) between a JIS-C hardness H4 of a surface of the core and the hardness H3 of an innermost part of the mid layer is equal to or greater than 14, and
• a Shore D hardness H5 of the inner cover is smaller than a Shore D hardness H6 of the outer cover;
• and
• the golf ball has a diameter that is equal to or greater than 42.67 mm and equal to or less than 42.80 mm.