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
a6f1
a6e2
a6d3
a6c4
a6b5
a6a2
a6a3
a6a4
a6a5
a6c6
a6b6
a6a7
b7e4
b7d5
b7c6
b7c8
f6e4
f6e8
f6g4
f6d5
f6h5
h7h5
h7h6
f7e6
g6g5
a8a7
a8e8
a8d8
a8c8
a8b8
g7h6
g7h8
c5c4
d7e5
d7b6
d7b8
d6d5
f8b8
f8c8
f8d8
f8e8
g8h8

## Board State Fen
r4rk1/1b1n1pbp/q2pPnp1/2p5/4P3/1PN2NP1/P2B1PBP/1R1Q1RK1 b - - 0 15
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
a6f1
a6e2
a6d3
a6c4
a6b5
a6a2
a6a3
a6a4
a6a5
a6c6
a6b6
a6a7
b7e4
b7d5
b7c6
b7c8
f6e4
f6e8
f6g4
f6d5
f6h5
h7h5
h7h6
f7e6
g6g5
a8a7
a8e8
a8d8
a8c8
a8b8
g7h6
g7h8
c5c4
d7e5
d7b6
d7b8
d6d5
f8b8
f8c8
f8d8
f8e8
g8h8

## Board State Fen
r4rk1/1b1n1pbp/q2pPnp1/2p5/4P3/1PN2NP1/P2B1PBP/1R1Q1RK1 b - - 0 15
assistant
f7e6