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
a5d2
a5c3
a5b4
a5c7
a5b6
e5d5
e5e3
e5e4
e5h5
e5g5
e5f5
e5e8
e5e7
e5e6
c6d5
c6c5
h6h5
a7a6
b7b5
b7b6
f7f5
f7f6
g7g5
g7g6
a8b8
c8h3
c8g4
c8f5
c8e6
c8d7
d8b6
d8c7
d8h4
d8g5
d8f6
d8e7
d8d5
d8d6
d8d7
d8f8
d8e8
g8h8
g8f8

## Board State Fen
r1bq2k1/pp3pp1/2p4p/b2Nr3/8/P2BP3/1PQB1PPP/3R1RK1 b - - 0 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
a5d2
a5c3
a5b4
a5c7
a5b6
e5d5
e5e3
e5e4
e5h5
e5g5
e5f5
e5e8
e5e7
e5e6
c6d5
c6c5
h6h5
a7a6
b7b5
b7b6
f7f5
f7f6
g7g5
g7g6
a8b8
c8h3
c8g4
c8f5
c8e6
c8d7
d8b6
d8c7
d8h4
d8g5
d8f6
d8e7
d8d5
d8d6
d8d7
d8f8
d8e8
g8h8
g8f8

## Board State Fen
r1bq2k1/pp3pp1/2p4p/b2Nr3/8/P2BP3/1PQB1PPP/3R1RK1 b - - 0 15
assistant
e5d5