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
b1a1
b1e1
b1d1
b1c1
b1b2
f1g2
f1e2
d3d4
e4d2
e4d6
e4f6
e4c3
e4g3
e4g5
c5a5
c5b5
c5c1
c5c2
c5c3
c5c4
c5e5
c5d5
c5c8
c5c7
c5c6

## Board State Fen
8/6p1/1r6/2R1p2k/4Nr2/3P1n2/1p3P2/1R3K2 w - - 4 51
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
b1a1
b1e1
b1d1
b1c1
b1b2
f1g2
f1e2
d3d4
e4d2
e4d6
e4f6
e4c3
e4g3
e4g5
c5a5
c5b5
c5c1
c5c2
c5c3
c5c4
c5e5
c5d5
c5c8
c5c7
c5c6

## Board State Fen
8/6p1/1r6/2R1p2k/4Nr2/3P1n2/1p3P2/1R3K2 w - - 4 51
assistant
c5c2