I'll do better than that. "Those who, through no fault of their own, do not know the Gospel of Christ or his Church, but who nevertheless seek God with a sincere heart, and, moved by grace, try in their actions to do his will as they know it through the dictates of their conscience - those too may achieve eternal salvation." Roman Catholic Cathechism at p. 244 section 847.
"The plan of salvation also includes those who acknowledge the Creator, in the first place amongst whom are the Muslims;..." (ibid., p. 242, section 841).
Leaves no room for atheists
If I could paraphrase:
Rule 1 - If I don't know about your invisible friend its not my fault, neccesarily
Rule 2 - I must try and locate said invisible, silent, imaginary friend
Rule 3 - Silent, invisible, imaginary friend can grant me salvation, even if I'm a Muslim prepared to deny my initial silent, invisible imaginary friend
and you have added your own Rule 4 - atheists are banned - perhaps because we struggle with Rules 1-3.
My goodness - is this the best intellectual effort theists can offer these days? Can someone please help Dough?
All very playground.