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
b4a5
b4e1
b4d2
b4c3
b4f8
b4e7
b4d6
b4c5
b4a4
b4b3
b4g4
b4f4
b4e4
b4d4
b4c4
b4b8
b4b7
b4b6
b4b5
d5d4
h6h5
a7a5
a7a6
f7f5
f7f6
g7g5
g7g6
g8h8
g8h7
g8f8

## Board State Fen
6k1/p4pp1/7p/3pQ3/1q4P1/1P3K1P/P4P2/8 b - - 2 39
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
b4a5
b4e1
b4d2
b4c3
b4f8
b4e7
b4d6
b4c5
b4a4
b4b3
b4g4
b4f4
b4e4
b4d4
b4c4
b4b8
b4b7
b4b6
b4b5
d5d4
h6h5
a7a5
a7a6
f7f5
f7f6
g7g5
g7g6
g8h8
g8h7
g8f8

## Board State Fen
6k1/p4pp1/7p/3pQ3/1q4P1/1P3K1P/P4P2/8 b - - 2 39
assistant
b4b5