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
b4a4
b4b1
b4b2
b4b3
b4h4
b4g4
b4f4
b4e4
b4d4
b4c4
b4b8
b4b7
b4b6
b4b5
e5a5
e5b5
e5c5
e5d5
e5e3
e5e4
e5h5
e5g5
e5f5
e5e8
e5e7
e5e6
g6g5
h6h5
f7f5
f7f6
g8h8
g8h7
g8g7
g8f8

## Board State Fen
6k1/3R1p2/R5pp/4r3/1r5P/4P3/5PP1/6K1 b - - 3 33
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
b4a4
b4b1
b4b2
b4b3
b4h4
b4g4
b4f4
b4e4
b4d4
b4c4
b4b8
b4b7
b4b6
b4b5
e5a5
e5b5
e5c5
e5d5
e5e3
e5e4
e5h5
e5g5
e5f5
e5e8
e5e7
e5e6
g6g5
h6h5
f7f5
f7f6
g8h8
g8h7
g8g7
g8f8

## Board State Fen
6k1/3R1p2/R5pp/4r3/1r5P/4P3/5PP1/6K1 b - - 3 33
assistant
b4h4