The Mystery of Linear A. Linear B was the writing system used in the late Bronze Age (2000- 1100BC) in Mycenaean Greece and has been successfully deciphered. The mystery remains with Linear A tablets, though. It appears that Linear B may have evolved from Linear A, as they share similar symbols, but Linear A does not represent the Greek language and to this day the tablets still remain undeciphered. Linear A was used in Crete between 1800-1450BC.