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
d1f1
d1e1
d1d8
d1d7
d1d6
d1d5
d1d4
d1d3
d1d2
a6c4
a6b5
a6c8
a6b7
c6b4
c6b8
c6d4
c6d8
c6a5
c6e5
c6e7
e6e5
f6e4
f6e8
f6g4
f6d5
f6d7
f6h5
g7g6
h7h5
h7h6
g8h8
g8f8

## Board State Fen
6k1/p4ppp/b1n1pn2/2p3N1/2P5/1P4P1/PB3P1P/R2r1BK1 b - - 1 17
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
d1f1
d1e1
d1d8
d1d7
d1d6
d1d5
d1d4
d1d3
d1d2
a6c4
a6b5
a6c8
a6b7
c6b4
c6b8
c6d4
c6d8
c6a5
c6e5
c6e7
e6e5
f6e4
f6e8
f6g4
f6d5
f6d7
f6h5
g7g6
h7h5
h7h6
g8h8
g8f8

## Board State Fen
6k1/p4ppp/b1n1pn2/2p3N1/2P5/1P4P1/PB3P1P/R2r1BK1 b - - 1 17
assistant
d1a1