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
f5f4
e6e5
a7a5
a7a6
b7b5
b7b6
d7c7
d7d1
d7d2
d7d3
d7d4
d7d5
d7d6
d7d8
e7a3
e7b4
e7c5
e7d6
e7d8
e7h4
e7g5
e7f6
e7f8
f7f6
h7h5
h7h6
g8h8
g8g7
g8f8

## Board State Fen
6k1/pp1rbp1p/4p3/5p2/2R5/4PNP1/PP2KP1P/8 b - - 1 22
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
f5f4
e6e5
a7a5
a7a6
b7b5
b7b6
d7c7
d7d1
d7d2
d7d3
d7d4
d7d5
d7d6
d7d8
e7a3
e7b4
e7c5
e7d6
e7d8
e7h4
e7g5
e7f6
e7f8
f7f6
h7h5
h7h6
g8h8
g8g7
g8f8

## Board State Fen
6k1/pp1rbp1p/4p3/5p2/2R5/4PNP1/PP2KP1P/8 b - - 1 22
assistant
e7f6