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
d1a4
d1b3
d1c2
d1e2
d1b1
d1c1
d1f1
d1e1
d1d3
d1d2
g1h1
a2a4
a2a3
g2g4
g2g3
h2h4
h2h3
c3c4
e3c1
e3d2
e3h6
e3g5
e3f4
f3e1
f3e5
f3g5
f3d2
f3h4
h7b1
h7c2
h7d3
h7e4
h7f5
h7g6
h7g8

## Board State Fen
r3qk2/p2n1ppB/bp1b3p/3p4/3P4/2P1BN2/P4PPP/R2Q2K1 w - - 4 18
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
d1a4
d1b3
d1c2
d1e2
d1b1
d1c1
d1f1
d1e1
d1d3
d1d2
g1h1
a2a4
a2a3
g2g4
g2g3
h2h4
h2h3
c3c4
e3c1
e3d2
e3h6
e3g5
e3f4
f3e1
f3e5
f3g5
f3d2
f3h4
h7b1
h7c2
h7d3
h7e4
h7f5
h7g6
h7g8

## Board State Fen
r3qk2/p2n1ppB/bp1b3p/3p4/3P4/2P1BN2/P4PPP/R2Q2K1 w - - 4 18
assistant
d1c2