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
b1h1
b1g1
b1f1
b1e1
b1d1
b1c1
b1b8
b1b7
b1b6
b1b5
b1b4
b1b3
b1b2
c5b3
c5b7
c5d3
c5d7
c5a4
c5e4
c5e6
e5e4
d6e7
d6e6
d6d5
d6c7
h6h5
g7g5
g7g6

## Board State Fen
1N4R1/6p1/p2k3p/P1n1p3/6PP/4PK2/8/1r6 b - - 4 41
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
b1h1
b1g1
b1f1
b1e1
b1d1
b1c1
b1b8
b1b7
b1b6
b1b5
b1b4
b1b3
b1b2
c5b3
c5b7
c5d3
c5d7
c5a4
c5e4
c5e6
e5e4
d6e7
d6e6
d6d5
d6c7
h6h5
g7g5
g7g6

## Board State Fen
1N4R1/6p1/p2k3p/P1n1p3/6PP/4PK2/8/1r6 b - - 4 41
assistant
e5e4