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
c1d2
c1c2
c1b1
g2g3
b2b4
b2b3
d1e1
c3b1
c3b5
c3a2
c3e2
c3e4
a4a5

## Board State Fen
6k1/1p1n2b1/p2p3p/2pP2p1/P5P1/2N5/1P4P1/2KRr3 w - - 0 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
c1d2
c1c2
c1b1
g2g3
b2b4
b2b3
d1e1
c3b1
c3b5
c3a2
c3e2
c3e4
a4a5

## Board State Fen
6k1/1p1n2b1/p2p3p/2pP2p1/P5P1/2N5/1P4P1/2KRr3 w - - 0 25
assistant
d1e1