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
b1g1
b1f1
b1e1
b1d1
b1c1
b1b8
b1b7
b1b6
b1b5
b1b4
b1b3
b1b2
h1h2
h1g2
e2d4
e2f4
e2c1
e2c3
e2g1
e2g3
h3h4
e4e5

## Board State Fen
3r4/6p1/2p1p3/p1b3k1/4P1P1/7P/4N3/1R5K w - - 0 36
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
b1g1
b1f1
b1e1
b1d1
b1c1
b1b8
b1b7
b1b6
b1b5
b1b4
b1b3
b1b2
h1h2
h1g2
e2d4
e2f4
e2c1
e2c3
e2g1
e2g3
h3h4
e4e5

## Board State Fen
3r4/6p1/2p1p3/p1b3k1/4P1P1/7P/4N3/1R5K w - - 0 36
assistant
b1f1