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
b4a3
b4e1
b4d2
b4c3
b4d6
b4c5
a5a4
a6f1
a6e2
a6d3
a6c4
a6b5
a6c8
a6b7
b6b5
h6h5
e7c5
e7d6
e7d8
e7h4
e7g5
e7f6
e7a7
e7b7
e7c7
e7d7
e7e4
e7e5
e7e6
e7e8
f7f5
f7f6
g7g5
g7g6
f8a8
f8b8
f8c8
f8d8
f8e8
g8h8
g8h7

## Board State Fen
5rk1/4qpp1/bp5p/p2R4/1b2N3/1P2P1P1/P1N2PBP/R5K1 b - - 0 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
b4a3
b4e1
b4d2
b4c3
b4d6
b4c5
a5a4
a6f1
a6e2
a6d3
a6c4
a6b5
a6c8
a6b7
b6b5
h6h5
e7c5
e7d6
e7d8
e7h4
e7g5
e7f6
e7a7
e7b7
e7c7
e7d7
e7e4
e7e5
e7e6
e7e8
f7f5
f7f6
g7g5
g7g6
f8a8
f8b8
f8c8
f8d8
f8e8
g8h8
g8h7

## Board State Fen
5rk1/4qpp1/bp5p/p2R4/1b2N3/1P2P1P1/P1N2PBP/R5K1 b - - 0 20
assistant
f8c8