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
b3b4
a3a4
d5a5
d5b5
d5c5
d5d1
d5d2
d5d3
d5d4
d5g5
d5f5
d5e5
d5d6
d7a7
d7b7
d7c7
d7d6
d7d8
e7e8
e7e8
e7e8
e7e8

## Board State Fen
8/3RP3/kp2r3/p2R2p1/8/KP6/4r3/8 w - - 14 57
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
b3b4
a3a4
d5a5
d5b5
d5c5
d5d1
d5d2
d5d3
d5d4
d5g5
d5f5
d5e5
d5d6
d7a7
d7b7
d7c7
d7d6
d7d8
e7e8
e7e8
e7e8
e7e8

## Board State Fen
8/3RP3/kp2r3/p2R2p1/8/KP6/4r3/8 w - - 14 57
assistant
e7e8r