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
d4d3
c5a3
c5b4
c5a7
c5b6
c5e7
c5d6
c6b4
c6b8
c6d8
c6a5
c6a7
c6e5
c6e7
g6f4
g6h4
g6h8
g6e5
g6e7
f7f5
f7f6
h7h5
h7h6
a8a3
a8a4
a8a5
a8a6
a8a7
a8e8
a8d8
a8c8
a8b8
f8b8
f8c8
f8d8
f8e8
g8h8

## Board State Fen
r4rk1/1R3ppp/2n3n1/2bpP3/3p4/PN3N2/5PPP/2B2RK1 b - - 1 20
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
d4d3
c5a3
c5b4
c5a7
c5b6
c5e7
c5d6
c6b4
c6b8
c6d8
c6a5
c6a7
c6e5
c6e7
g6f4
g6h4
g6h8
g6e5
g6e7
f7f5
f7f6
h7h5
h7h6
a8a3
a8a4
a8a5
a8a6
a8a7
a8e8
a8d8
a8c8
a8b8
f8b8
f8c8
f8d8
f8e8
g8h8

## Board State Fen
r4rk1/1R3ppp/2n3n1/2bpP3/3p4/PN3N2/5PPP/2B2RK1 b - - 1 20
assistant
c5a7