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
a5a4
d6c4
d6c8
d6e4
d6b5
d6b7
d6f5
e6e5
a7a6
a7e7
a7d7
a7c7
a7b7
f7f5
f7f6
g7g5
g7g6
h7h5
h7h6
a8d8
a8c8
a8b8
e8a4
e8b5
e8c6
e8d7
g8h8
g8f8

## Board State Fen
r3b1k1/r4ppp/3np3/p2p4/3P4/1P1NPP2/R2N1KPP/2R5 b - - 4 23
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
a5a4
d6c4
d6c8
d6e4
d6b5
d6b7
d6f5
e6e5
a7a6
a7e7
a7d7
a7c7
a7b7
f7f5
f7f6
g7g5
g7g6
h7h5
h7h6
a8d8
a8c8
a8b8
e8a4
e8b5
e8c6
e8d7
g8h8
g8f8

## Board State Fen
r3b1k1/r4ppp/3np3/p2p4/3P4/1P1NPP2/R2N1KPP/2R5 b - - 4 23
assistant
a5a4