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
a1d1
a1c1
a1b1
a1a4
a1a3
a1a2
e1b1
e1c1
e1d1
e1f1
e1e2
g1h1
g1f1
g2g4
g2g3
h2h4
h2h3
c3c4
d3d4
e3d1
e3d5
e3f1
e3f5
e3c2
e3c4
e3g4
f3e5
f3g5
f3d2
f3d4
f3h4
b4b5
e4d5

## Board State Fen
3r2k1/npp2pp1/p3rn1p/P2pp3/1P2P3/2PPNN2/5PPP/R3R1K1 w - - 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
a1d1
a1c1
a1b1
a1a4
a1a3
a1a2
e1b1
e1c1
e1d1
e1f1
e1e2
g1h1
g1f1
g2g4
g2g3
h2h4
h2h3
c3c4
d3d4
e3d1
e3d5
e3f1
e3f5
e3c2
e3c4
e3g4
f3e5
f3g5
f3d2
f3d4
f3h4
b4b5
e4d5

## Board State Fen
3r2k1/npp2pp1/p3rn1p/P2pp3/1P2P3/2PPNN2/5PPP/R3R1K1 w - - 0 19
assistant
e4d5