as my father did

[navi]

1) I played chess as my father did.
2) I played chess, as my father did.

Which of the above sentences correspond to which of the following meanings:

a) I played chess because my father did.
b) I played chess while my father did.
c) I played chess the way my father did.
d) I played chess and so did my father.

Gratefully,
Navi

[Erik_Kowal]

1) = c) or (arguably) a)
2) = d)

[Phil White]

I concur with Erik. For meaning b, you need the past progressive in both clauses: "I was playing chess as my father was". (The second past progressive is ellipted).

The "because" meaning of "as" is rare nowadays:
"As you are here, can you help me move the sofa?" -> "Since you're here, can you help me move the sofa?"
It could be argued that the two above sentences imply something slightly different. The variant with "since" could imply (more strongly) that the person was not expected/wanted.