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
a1c1
a1b1
a1a3
a1a2
d1b1
d1c1
d1f1
d1e1
g1h1
g1f2
g1f1
b2b3
d2c4
d2e4
d2b1
d2b3
d2f1
e2a6
e2b5
e2c4
e2d3
e2f1
g2g4
g2g3
h2h4
h2h3
f3e4
f3f4
a4a5
d4d5

## Board State Fen
r2r2k1/1p1n2pb/2p1p2p/8/Pp1Pp3/5P2/1P1NB1PP/R2R2K1 w - - 0 22
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
a1c1
a1b1
a1a3
a1a2
d1b1
d1c1
d1f1
d1e1
g1h1
g1f2
g1f1
b2b3
d2c4
d2e4
d2b1
d2b3
d2f1
e2a6
e2b5
e2c4
e2d3
e2f1
g2g4
g2g3
h2h4
h2h3
f3e4
f3f4
a4a5
d4d5

## Board State Fen
r2r2k1/1p1n2pb/2p1p2p/8/Pp1Pp3/5P2/1P1NB1PP/R2R2K1 w - - 0 22
assistant
d2e4