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
g1h2
g1h1
g1f1
f2f4
f2f3
g2g4
g2g3
c3c4
h3h4
a4a1
a4a2
a4a3
a4h4
a4g4
a4f4
a4e4
a4d4
a4c4
a4b4
a4a8
a4a7
a4a6
a4a5

## Board State Fen
4r1k1/1p5p/6p1/2p5/R7/1bP4P/5PP1/3R2K1 w - - 1 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
d1a1
d1b1
d1c1
d1f1
d1e1
d1d8
d1d7
d1d6
d1d5
d1d4
d1d3
d1d2
g1h2
g1h1
g1f1
f2f4
f2f3
g2g4
g2g3
c3c4
h3h4
a4a1
a4a2
a4a3
a4h4
a4g4
a4f4
a4e4
a4d4
a4c4
a4b4
a4a8
a4a7
a4a6
a4a5

## Board State Fen
4r1k1/1p5p/6p1/2p5/R7/1bP4P/5PP1/3R2K1 w - - 1 28
assistant
a4a1