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
d2e3
d2e2
d2e1
d2d3
d2d1
a3a4
b3b4
f3f4
g3g4
b5a7
b5c3
b5c7
b5d4
b5d6
d5c5
d5d3
d5d4
d5e5
d5d6

## Board State Fen
8/1n6/2rp1pk1/pN1Rp2p/4P3/PP3PP1/3K4/8 w - - 0 40
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
d2e3
d2e2
d2e1
d2d3
d2d1
a3a4
b3b4
f3f4
g3g4
b5a7
b5c3
b5c7
b5d4
b5d6
d5c5
d5d3
d5d4
d5e5
d5d6

## Board State Fen
8/1n6/2rp1pk1/pN1Rp2p/4P3/PP3PP1/3K4/8 w - - 0 40
assistant
b5a7