Among the easiest chords to play with the Cuatro as you only need to mark 1 fret with 1 finger! Great stuff! The execution is nice and easy, since only 1 finger is needed then you can easily decide with which finger you wish to mark the chord. The most common way is with the middle finger since that liberates the other fingers and permits them to mark other notes and help with some alterations of the chord. You can also of course choose to to play this with the index finger depending on the next chord or note you are intending on playing.
B Minor Chord
The B Minor chord has the following notes:
B – D – F#
As the last note is a B, then it is not necessary to mark this at any place. This is applicable to both B Minor and B Major. Take a look at the video below and see how this chord sounds like.