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
a7e3
a7d4
a7c5
a7b6
a7b8
a7a3
a7a4
a7a5
a7a6
a7a8
h3f1
h3g2
h3c8
h3d7
h3e6
h3f5
h3g4
c7c5
c7c6
b7b5
b7b6
e7d5
e7f5
e7c6
e7c8
e7g6
f7f5
f7f6
g7g5
g7g6
h7h5
h7h6
d8a8
d8b8
d8c8
d8d5
d8d6
d8d7
d8e8
f8e8
g8h8

## Board State Fen
3r1rk1/qpp1nppp/8/3P4/5P2/Q1N1N1Pb/PP5P/R3R1K1 b - - 4 21
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
a7e3
a7d4
a7c5
a7b6
a7b8
a7a3
a7a4
a7a5
a7a6
a7a8
h3f1
h3g2
h3c8
h3d7
h3e6
h3f5
h3g4
c7c5
c7c6
b7b5
b7b6
e7d5
e7f5
e7c6
e7c8
e7g6
f7f5
f7f6
g7g5
g7g6
h7h5
h7h6
d8a8
d8b8
d8c8
d8d5
d8d6
d8d7
d8e8
f8e8
g8h8

## Board State Fen
3r1rk1/qpp1nppp/8/3P4/5P2/Q1N1N1Pb/PP5P/R3R1K1 b - - 4 21
assistant
a7a3