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
a1f1
a1e1
a1d1
a1c1
a1b1
a1a8
a1a7
a1a6
a1a5
a1a4
a1a3
a1a2
g1h2
g1h1
g1f1
f2f4
f2f3
g2g4
g2g3
h4h5
f7a2
f7b3
f7c4
f7d5
f7e6
f7e8
f7h5
f7g6
f7g8

## Board State Fen
1r5k/5Bpp/3p4/4p3/4P2P/2b5/5PP1/R5K1 w - - 0 31
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
a1f1
a1e1
a1d1
a1c1
a1b1
a1a8
a1a7
a1a6
a1a5
a1a4
a1a3
a1a2
g1h2
g1h1
g1f1
f2f4
f2f3
g2g4
g2g3
h4h5
f7a2
f7b3
f7c4
f7d5
f7e6
f7e8
f7h5
f7g6
f7g8

## Board State Fen
1r5k/5Bpp/3p4/4p3/4P2P/2b5/5PP1/R5K1 w - - 0 31
assistant
a1a2