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
a1g1
a1f1
a1e1
a1d1
a1c1
a1b1
h1b1
h1c1
h1d1
h1e1
h1f1
h1g1
a2a4
a2a3
g2h3
g2g1
g2f3
g2f1
h2h4
h2h3
g3g4
f4f5
e5e6

## Board State Fen
6k1/p4ppp/1p6/4P3/1b1r1P2/1P1n2P1/P5KP/R6R w - - 0 27
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
a1g1
a1f1
a1e1
a1d1
a1c1
a1b1
h1b1
h1c1
h1d1
h1e1
h1f1
h1g1
a2a4
a2a3
g2h3
g2g1
g2f3
g2f1
h2h4
h2h3
g3g4
f4f5
e5e6

## Board State Fen
6k1/p4ppp/1p6/4P3/1b1r1P2/1P1n2P1/P5KP/R6R w - - 0 27
assistant
a1d1