Partial barre
fret 2x02222
A6 is the A major 6 chord. Its notes are A, C♯, E and F♯. A bright alternative to a plain major chord; common in swing and pop.
x02222
Numbers show frets from the low E string to the high e string; x means don't play that string.
Every A, C♯, E and F♯ on the first 12 frets. The filled dots are the root, A. Build your own shape from any nearby group.
Other A chords
Other major 6 chords