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
b2a1
b2a3
b2c1
b2h8
b2g7
b2f6
b2e5
b2d4
b2c3
b5b4
a6a5
d6c4
d6c8
d6e4
d6e8
d6b7
d6f5
g6g5
f7f5
f7f6
h7h5
h7h6
a8a7
a8f8
a8e8
a8d8
a8c8
a8b8
g8h8
g8g7
g8f8

## Board State Fen
r5k1/5p1p/p1Rn2p1/1p1P4/8/1B2NP2/Pb3P1P/6K1 b - - 1 28
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
b2a1
b2a3
b2c1
b2h8
b2g7
b2f6
b2e5
b2d4
b2c3
b5b4
a6a5
d6c4
d6c8
d6e4
d6e8
d6b7
d6f5
g6g5
f7f5
f7f6
h7h5
h7h6
a8a7
a8f8
a8e8
a8d8
a8c8
a8b8
g8h8
g8g7
g8f8

## Board State Fen
r5k1/5p1p/p1Rn2p1/1p1P4/8/1B2NP2/Pb3P1P/6K1 b - - 1 28
assistant
b2e5