The virtue of a solo game (8)
I believe the answer is:
patience
This clue could be a double definition.
'the virtue' is the first definition.
(I've seen this before)
'a solo game' is the second definition.
'patience' can be an answer for 'game' (patience is a kind of game). I am unsure of the 'a solo' bit.
'of' acts as a link.
Can you help me to learn more?
(Other definitions for patience that I've seen before include "Virtue - solitaire" , "that one plays" , "Unhurried quality or solo card game" , "Work by G&S" , "Card game for one player" .)