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
d1e1
f1g2
f1e2
d2a2
d2b2
d2c2
d2e2
d3d4
e4d6
e4f6
e4c3
e4c5
e4g3
e4g5

## Board State Fen
8/6p1/1r5k/1p2p2P/4Nr2/3P1n2/3R1P2/3R1K2 w - - 0 45
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
d1e1
f1g2
f1e2
d2a2
d2b2
d2c2
d2e2
d3d4
e4d6
e4f6
e4c3
e4c5
e4g3
e4g5

## Board State Fen
8/6p1/1r5k/1p2p2P/4Nr2/3P1n2/3R1P2/3R1K2 w - - 0 45
assistant
d2b2