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
b2a2
b2b1
b2f2
b2e2
b2d2
b2c2
b2b8
b2b7
b2b6
b2b5
b2b4
b2b3
f5f4
e6e5
g6g5
e7a3
e7b4
e7c5
e7d6
e7d8
e7h4
e7g5
e7f6
e7f8
f7g8
f7g7
f7f8
f7f6
f7e8
h7h5
h7h6

## Board State Fen
8/4bk1p/R3p1p1/5p2/P7/3NPP2/1r3P1P/6K1 b - - 8 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
b2a2
b2b1
b2f2
b2e2
b2d2
b2c2
b2b8
b2b7
b2b6
b2b5
b2b4
b2b3
f5f4
e6e5
g6g5
e7a3
e7b4
e7c5
e7d6
e7d8
e7h4
e7g5
e7f6
e7f8
f7g8
f7g7
f7f8
f7f6
f7e8
h7h5
h7h6

## Board State Fen
8/4bk1p/R3p1p1/5p2/P7/3NPP2/1r3P1P/6K1 b - - 8 37
assistant
b2a2