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
d1a1
d1b1
d1c1
d1f1
d1e1
d1d4
d1d3
d1d2
g1h2
g1h1
g1g2
g1f2
g1f1
a2a4
a2a3
g3g4
h4h5
d5c3
d5c7
d5e3
d5e7
d5b4
d5b6
d5f4
d5f6

## Board State Fen
2r5/pp5p/4k1p1/3Nn1P1/4P2P/6P1/P7/3R2K1 w - - 1 25
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
d1a1
d1b1
d1c1
d1f1
d1e1
d1d4
d1d3
d1d2
g1h2
g1h1
g1g2
g1f2
g1f1
a2a4
a2a3
g3g4
h4h5
d5c3
d5c7
d5e3
d5e7
d5b4
d5b6
d5f4
d5f6

## Board State Fen
2r5/pp5p/4k1p1/3Nn1P1/4P2P/6P1/P7/3R2K1 w - - 1 25
assistant
d5f4