Hi there, harryreed5
The open A minor chord is played with only three notes, that is for sure. The other ways to play an A minor do require using more fingers, for example, if you take a look at "Variation 2" on the A minor chord in our Chord finder app here:https://www.guitartricks.com/chordfinder.php
I hope that helps!
- Billy
If you have any questions, comments, or concerns, please contact us.