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
a1b1
a1a3
a1a2
c1b1
c1f1
c1e1
c1d1
c1c8
c1c7
c1c6
c1c5
c1c4
c1c3
c1c2
g1h1
g1f1
f2f4
f2f3
g2g4
g2g3
h2h4
h2h3
d3d4
e3d2
e3a7
e3b6
e3c5
e3d4
e3h6
e3g5
e3f4
a4b5
a4a5

## Board State Fen
5rk1/4bppp/p7/1p1rp3/PP6/3PB3/5PPP/R1R3K1 w - - 0 23
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
a1b1
a1a3
a1a2
c1b1
c1f1
c1e1
c1d1
c1c8
c1c7
c1c6
c1c5
c1c4
c1c3
c1c2
g1h1
g1f1
f2f4
f2f3
g2g4
g2g3
h2h4
h2h3
d3d4
e3d2
e3a7
e3b6
e3c5
e3d4
e3h6
e3g5
e3f4
a4b5
a4a5

## Board State Fen
5rk1/4bppp/p7/1p1rp3/PP6/3PB3/5PPP/R1R3K1 w - - 0 23
assistant
a4b5