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
b7a7
b7b1
b7b2
b7b3
b7b4
b7b5
b7b6
b7f7
b7e7
b7d7
b7c7
b7b8
f4f5
e3e4
d3e2
d3d4
d3d2
d3c3
d3c2
f2f3

## Board State Fen
8/pR3p2/3k2p1/r2p3p/5P1P/3KP3/5P2/8 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
b7a7
b7b1
b7b2
b7b3
b7b4
b7b5
b7b6
b7f7
b7e7
b7d7
b7c7
b7b8
f4f5
e3e4
d3e2
d3d4
d3d2
d3c3
d3c2
f2f3

## Board State Fen
8/pR3p2/3k2p1/r2p3p/5P1P/3KP3/5P2/8 w - - 0 36
assistant
b7f7