Given the available moves based on the current board state in FEN notation, think carefully about which move would be best, then make that move. Be sure to note your color indicated in the FEN notation before deciding.
## Available Moves
e1f1
e1d2
e1d1
c1a1
c1b1
c1d1
c1c6
c1c5
c1c4
c1c3
c1c2
h1f1
h1g1
h2h4
h2h3
a3a4
e3e4
f3e5
f3g1
f3g5
f3d2
f3h4
g3c7
g3d6
g3e5
g3f4
g3h4
b4b5

## Board State Fen
r3k2r/p1p1nppp/1pn5/3p4/1P1P4/P3PNB1/5PPP/2R1Kb1R w Kkq - 0 19
system
You are a chess playing AI.
user
Given the available moves based on the current board state in FEN notation, think carefully about which move would be best, then make that move. Be sure to note your color indicated in the FEN notation before deciding.
## Available Moves
e1f1
e1d2
e1d1
c1a1
c1b1
c1d1
c1c6
c1c5
c1c4
c1c3
c1c2
h1f1
h1g1
h2h4
h2h3
a3a4
e3e4
f3e5
f3g1
f3g5
f3d2
f3h4
g3c7
g3d6
g3e5
g3f4
g3h4
b4b5

## Board State Fen
r3k2r/p1p1nppp/1pn5/3p4/1P1P4/P3PNB1/5PPP/2R1Kb1R w Kkq - 0 19
assistant
e1f1