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
f1e3
f1g3
f1d2
f1h2
b2b4
b2c3
b2b3
e2e1
e2d1
a3a4
g4g5
e7a7
e7b7
e7c7
e7d7
e7e3
e7e4
e7e5
e7e6
e7h7
e7g7
e7f7
e7e8

## Board State Fen
6k1/4R2p/p1p3p1/1pP5/6Pn/P1p2r1P/1P2K3/5N2 w - - 0 37
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
f1e3
f1g3
f1d2
f1h2
b2b4
b2c3
b2b3
e2e1
e2d1
a3a4
g4g5
e7a7
e7b7
e7c7
e7d7
e7e3
e7e4
e7e5
e7e6
e7h7
e7g7
e7f7
e7e8

## Board State Fen
6k1/4R2p/p1p3p1/1pP5/6Pn/P1p2r1P/1P2K3/5N2 w - - 0 37
assistant
b2c3