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
a4a3
e4d2
e4d6
e4f2
e4f6
e4c3
e4c5
e4g3
e4g5
d5d4
b7b6
f7g8
f7g6
f7f8
f7e8
f7e7
f7e6
g7g5
g7g6
h7h5
h7h6
a8a5
a8a6
a8a7
a8h8
a8g8
a8f8
a8e8
a8d8
a8c8
a8b8

## Board State Fen
r7/1p3kpp/8/1P1pPp2/p3nP2/2P1B3/1P4PP/R5K1 b - - 3 37
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
a4a3
e4d2
e4d6
e4f2
e4f6
e4c3
e4c5
e4g3
e4g5
d5d4
b7b6
f7g8
f7g6
f7f8
f7e8
f7e7
f7e6
g7g5
g7g6
h7h5
h7h6
a8a5
a8a6
a8a7
a8h8
a8g8
a8f8
a8e8
a8d8
a8c8
a8b8

## Board State Fen
r7/1p3kpp/8/1P1pPp2/p3nP2/2P1B3/1P4PP/R5K1 b - - 3 37
assistant
a4a3