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
a1h1
a1g1
a1f1
a1e1
a1d1
a1c1
a1b1
a1a8
a1a7
a1a6
a1a5
a1a4
a1a3
a1a2
d4c2
d4e2
d4e6
d4b3
d4b5
d4f3
d4f5
h5h4
c6a6
c6b6
c6c4
c6c5
c6e6
c6d6
c6c8
c6c7
f6f5
d8e8
d8c8

## Board State Fen
3k4/1R6/2r2p2/3Np2p/1RPnP3/5PP1/3K4/r7 b - - 9 50
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
a1h1
a1g1
a1f1
a1e1
a1d1
a1c1
a1b1
a1a8
a1a7
a1a6
a1a5
a1a4
a1a3
a1a2
d4c2
d4e2
d4e6
d4b3
d4b5
d4f3
d4f5
h5h4
c6a6
c6b6
c6c4
c6c5
c6e6
c6d6
c6c8
c6c7
f6f5
d8e8
d8c8

## Board State Fen
3k4/1R6/2r2p2/3Np2p/1RPnP3/5PP1/3K4/r7 b - - 9 50
assistant
a1a2