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
b1f1
b1e1
b1d1
b1c1
b1b6
b1b5
b1b4
b1b3
b1b2
g1h1
g1g2
g1f1
f2f4
f2f3
h2h4
h2h3
g3g4
e4a4
e4b4
e4c4
e4d4
e4e1
e4e2
e4e3
e4h4
e4g4
e4f4
e4e6
e4e5
a6b4
a6b8
a6c5
a6c7

## Board State Fen
3r2k1/p4pp1/Nn2pb1p/8/4R3/6P1/5P1P/1R4K1 w - - 1 28
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
b1f1
b1e1
b1d1
b1c1
b1b6
b1b5
b1b4
b1b3
b1b2
g1h1
g1g2
g1f1
f2f4
f2f3
h2h4
h2h3
g3g4
e4a4
e4b4
e4c4
e4d4
e4e1
e4e2
e4e3
e4h4
e4g4
e4f4
e4e6
e4e5
a6b4
a6b8
a6c5
a6c7

## Board State Fen
3r2k1/p4pp1/Nn2pb1p/8/4R3/6P1/5P1P/1R4K1 w - - 1 28
assistant
e4e2