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
d4a4
d4b4
d4c4
d4d1
d4d2
d4d3
d4f4
d4e4
d4d8
d4d7
d4d6
d4d5
a5a4
c5b3
c5b7
c5d3
c5d7
c5a4
c5a6
c5e4
b6b5
c6d7
c6c7
c6b7
f7f5
f7f6
g7g5
g7g6
h7h5
h7h6

## Board State Fen
8/5ppp/1pk1p3/p1n1P3/3r1P2/P1N1K1P1/1P5P/2R5 b - - 10 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
d4a4
d4b4
d4c4
d4d1
d4d2
d4d3
d4f4
d4e4
d4d8
d4d7
d4d6
d4d5
a5a4
c5b3
c5b7
c5d3
c5d7
c5a4
c5a6
c5e4
b6b5
c6d7
c6c7
c6b7
f7f5
f7f6
g7g5
g7g6
h7h5
h7h6

## Board State Fen
8/5ppp/1pk1p3/p1n1P3/3r1P2/P1N1K1P1/1P5P/2R5 b - - 10 28
assistant
d4d3