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
d4d3
a6a5
c6b4
c6b8
c6d8
c6a5
c6a7
c6e5
c6e7
b7b5
b7b6
f7g7
f7f8
f7e8
g8a8
g8b8
g8c8
g8d8
g8e8
g8f8
g8g1
g8g2
g8g3
g8g4
g8g5
g8g6
g8g7
g8h8

## Board State Fen
6r1/1p3k1p/p1n4R/3N1P2/P1Pp4/5K1P/8/8 b - - 2 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
d4d3
a6a5
c6b4
c6b8
c6d8
c6a5
c6a7
c6e5
c6e7
b7b5
b7b6
f7g7
f7f8
f7e8
g8a8
g8b8
g8c8
g8d8
g8e8
g8f8
g8g1
g8g2
g8g3
g8g4
g8g5
g8g6
g8g7
g8h8

## Board State Fen
6r1/1p3k1p/p1n4R/3N1P2/P1Pp4/5K1P/8/8 b - - 2 39
assistant
f7g7