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
d1a1
d1b1
d1c1
d1h1
d1g1
d1f1
d1e1
d1d8
d1d7
d1d6
d1d5
d1d4
d1d3
d1d2
b5b4
c5c4
e6f7
e6f6
e6d7
e6d6
g6g5
e7d6
e7d8
e7h4
e7g5
e7f6
e7f8
h7h5
h7h6

## Board State Fen
R7/4b2p/4k1p1/1pp1p3/4Pp2/1P3P1P/2P1KBP1/3r4 b - - 0 31
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
d1a1
d1b1
d1c1
d1h1
d1g1
d1f1
d1e1
d1d8
d1d7
d1d6
d1d5
d1d4
d1d3
d1d2
b5b4
c5c4
e6f7
e6f6
e6d7
e6d6
g6g5
e7d6
e7d8
e7h4
e7g5
e7f6
e7f8
h7h5
h7h6

## Board State Fen
R7/4b2p/4k1p1/1pp1p3/4Pp2/1P3P1P/2P1KBP1/3r4 b - - 0 31
assistant
d1c1