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
a5b3
a5c4
a5c6
e6c4
e6d5
e6c8
e6d7
e6h3
e6g4
e6f5
f6e4
f6g4
f6d5
f6d7
f6h5
a7a6
b7b5
b7b6
e7a3
e7b4
e7c5
e7d6
e7f8
g7g5
g7g6
h7h5
h7h6
a8c8
a8b8
d8b6
d8c7
d8b8
d8c8
d8d5
d8d6
d8d7
e8f8
g8h8
g8f8

## Board State Fen
r2qr1k1/pp2bppp/4bn2/n7/P1Pp4/N2Q1NP1/1B1P1PBP/R3R1K1 b - - 4 15
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
a5b3
a5c4
a5c6
e6c4
e6d5
e6c8
e6d7
e6h3
e6g4
e6f5
f6e4
f6g4
f6d5
f6d7
f6h5
a7a6
b7b5
b7b6
e7a3
e7b4
e7c5
e7d6
e7f8
g7g5
g7g6
h7h5
h7h6
a8c8
a8b8
d8b6
d8c7
d8b8
d8c8
d8d5
d8d6
d8d7
e8f8
g8h8
g8f8

## Board State Fen
r2qr1k1/pp2bppp/4bn2/n7/P1Pp4/N2Q1NP1/1B1P1PBP/R3R1K1 b - - 4 15
assistant
a8c8