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
e1a1
e1b1
e1c1
e1d1
e1g1
e1f1
e1e4
e1e3
e1e2
h1h2
h1g1
g2g4
g2g3
h3h4
d4a4
d4b4
d4c4
d4d1
d4d2
d4d3
d4e4
d4d8
d4d7
d4d6
d4d5
f4f5

## Board State Fen
6k1/6p1/p3p3/P3P2p/3R1P2/7P/1rr3P1/4R2K w - - 1 31
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
e1a1
e1b1
e1c1
e1d1
e1g1
e1f1
e1e4
e1e3
e1e2
h1h2
h1g1
g2g4
g2g3
h3h4
d4a4
d4b4
d4c4
d4d1
d4d2
d4d3
d4e4
d4d8
d4d7
d4d6
d4d5
f4f5

## Board State Fen
6k1/6p1/p3p3/P3P2p/3R1P2/7P/1rr3P1/4R2K w - - 1 31
assistant
e1g1