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
e1a1
e1b1
e1c1
e1d1
e1h1
e1g1
e1f1
e1e5
e1e4
e1e3
e1e2
a2a4
a2a3
g2h3
g2h2
g2h1
g2g3
g2g1
g2f3
g2f2
g2f1
c4c5
f4e5
f4f5
d5d6

## Board State Fen
8/3r1nk1/p7/3Pp3/2P2P2/8/P5K1/4R3 w - - 0 45
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
e1a1
e1b1
e1c1
e1d1
e1h1
e1g1
e1f1
e1e5
e1e4
e1e3
e1e2
a2a4
a2a3
g2h3
g2h2
g2h1
g2g3
g2g1
g2f3
g2f2
g2f1
c4c5
f4e5
f4f5
d5d6

## Board State Fen
8/3r1nk1/p7/3Pp3/2P2P2/8/P5K1/4R3 w - - 0 45
assistant
f4e5