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
d4b2
d4c3
d4e3
d4e5
c5c4
f5c8
f5d7
f5e6
f5h3
f5g4
f5g6
a7a5
a7a6
b7b5
b7b6
f7f6
g7g5
g7g6
h7h5
h7h6
a8c8
a8b8
d8a5
d8b6
d8c7
d8h4
d8g5
d8f6
d8e7
d8b8
d8c8
d8d5
d8d6
d8d7
d8e8
f8e8
g8h8

## Board State Fen
r2q1rk1/pp3ppp/8/2p1Pb2/3bp3/1N2B2P/PP2QPP1/R2R2K1 b - - 1 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
d4b2
d4c3
d4e3
d4e5
c5c4
f5c8
f5d7
f5e6
f5h3
f5g4
f5g6
a7a5
a7a6
b7b5
b7b6
f7f6
g7g5
g7g6
h7h5
h7h6
a8c8
a8b8
d8a5
d8b6
d8c7
d8h4
d8g5
d8f6
d8e7
d8b8
d8c8
d8d5
d8d6
d8d7
d8e8
f8e8
g8h8

## Board State Fen
r2q1rk1/pp3ppp/8/2p1Pb2/3bp3/1N2B2P/PP2QPP1/R2R2K1 b - - 1 18
assistant
d8e7