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
a5e1
a5d2
a5c3
a5b4
a5b6
e5d4
c6c5
d6d5
e6c4
e6d5
e6c8
e6d7
e6h3
e6g4
e6f5
e6f7
f6f5
g6f4
g6f8
g6h4
g6h8
g6e7
h7h5
h7h6
a8a6
a8a7
a8c8
a8b8
d8e7
d8b8
d8c8
d8d7
e8e7
e8f8
g8h8
g8f8
g8f7

## Board State Fen
r2qr1k1/2p3pp/2ppbpn1/b3p3/2PPP3/1P2BNNP/2Q2PP1/3R1RK1 b - - 2 20
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
a5e1
a5d2
a5c3
a5b4
a5b6
e5d4
c6c5
d6d5
e6c4
e6d5
e6c8
e6d7
e6h3
e6g4
e6f5
e6f7
f6f5
g6f4
g6f8
g6h4
g6h8
g6e7
h7h5
h7h6
a8a6
a8a7
a8c8
a8b8
d8e7
d8b8
d8c8
d8d7
e8e7
e8f8
g8h8
g8f8
g8f7

## Board State Fen
r2qr1k1/2p3pp/2ppbpn1/b3p3/2PPP3/1P2BNNP/2Q2PP1/3R1RK1 b - - 2 20
assistant
a5b4