Can i play in solo?

Can i play this card game in solo?

According to this page the answer should be "yes" as at the bottom of the page it's written "1-4 players" which usually means that the minimum number of players required to play is 1 and the maximum is 4.

Also, the pdf rulebook in the same page later goes on to describe how to play in solitaire. So it should definitely be playable alone.