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
f5b1
f5c2
f5d3
f5e4
f5c8
f5d7
f5e6
f5h3
f5g4
f5h7
f5g6
a6b4
a6b8
a6c5
a6c7
c6c5
f6e4
f6e8
f6g4
f6d7
f6h5
f6h7
h6h5
b7b5
b7b6
e7c7
e7d7
e7e5
e7e6
e7e8
g7g5
g7g6
a8a7
a8c8
a8b8
d8b6
d8c7
d8b8
d8c8
d8d6
d8d7
d8f8
d8e8
g8h8
g8h7
g8f8

## Board State Fen
r2q2k1/1p2rpp1/n1p2n1p/p2pNb2/P2P4/1PN1P1P1/4RPBP/3QR1K1 b - - 6 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
f5b1
f5c2
f5d3
f5e4
f5c8
f5d7
f5e6
f5h3
f5g4
f5h7
f5g6
a6b4
a6b8
a6c5
a6c7
c6c5
f6e4
f6e8
f6g4
f6d7
f6h5
f6h7
h6h5
b7b5
b7b6
e7c7
e7d7
e7e5
e7e6
e7e8
g7g5
g7g6
a8a7
a8c8
a8b8
d8b6
d8c7
d8b8
d8c8
d8d6
d8d7
d8f8
d8e8
g8h8
g8h7
g8f8

## Board State Fen
r2q2k1/1p2rpp1/n1p2n1p/p2pNb2/P2P4/1PN1P1P1/4RPBP/3QR1K1 b - - 6 23
assistant
a6b4