@27 : An offset of 119 (0x77 as max valid square index) is …
@27 : An offset of 119 (0x77 as max valid square index) is added, to make +-119 a 0..238 range (size of 240 for alignment reasons).
@27 : An offset of 119 (0x77 as max valid square index) is added, to make +-119 a 0..238 range (size of 240 for alignment reasons).