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
d3b1
d3c2
d3c4
d3f1
d3e2
d3g6
d3f5
d3e4
e5e4
a6a5
e6f7
e6f5
e6e7
e6d7
e6d6
f6f5
b7b5
b7b6
h7h5
h7h6
d8a8
d8b8
d8c8
d8d4
d8d5
d8d6
d8d7
d8h8
d8g8
d8f8
d8e8

## Board State Fen
3r4/1p5p/p3kp2/4p3/P1P5/1P1bB1P1/1K5P/3R4 b - - 2 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
d3b1
d3c2
d3c4
d3f1
d3e2
d3g6
d3f5
d3e4
e5e4
a6a5
e6f7
e6f5
e6e7
e6d7
e6d6
f6f5
b7b5
b7b6
h7h5
h7h6
d8a8
d8b8
d8c8
d8d4
d8d5
d8d6
d8d7
d8h8
d8g8
d8f8
d8e8

## Board State Fen
3r4/1p5p/p3kp2/4p3/P1P5/1P1bB1P1/1K5P/3R4 b - - 2 37
assistant
d8d7