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
g4a4
g4b4
g4c4
g4d4
g4e4
g4f4
g4g3
g4h4
g4g8
g4g7
g4g6
g4g5
e6f5
e6e7
e6e5
c5c4
b6b5
a7a5
a7a6
f7f5
f7f6

## Board State Fen
8/p4p2/1pp1k3/2p1P2p/6rP/P1P2KP1/1P1R4/8 b - - 8 39
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
g4a4
g4b4
g4c4
g4d4
g4e4
g4f4
g4g3
g4h4
g4g8
g4g7
g4g6
g4g5
e6f5
e6e7
e6e5
c5c4
b6b5
a7a5
a7a6
f7f5
f7f6

## Board State Fen
8/p4p2/1pp1k3/2p1P2p/6rP/P1P2KP1/1P1R4/8 b - - 8 39
assistant
g4g6