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
b5a5
b5b1
b5b2
b5b3
b5b4
b5f5
b5e5
b5d5
b5c5
b5b8
b5b7
b5b6
e3c1
e3d2
e3a7
e3b6
e3c5
e3d4
e3g1
e3f2
f3g3
f3g2
f3f2
f3e2
a2a4
a2a3

## Board State Fen
4r1k1/8/5bp1/1R3p1p/5P2/4BK2/P7/8 w - - 0 44
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
b5a5
b5b1
b5b2
b5b3
b5b4
b5f5
b5e5
b5d5
b5c5
b5b8
b5b7
b5b6
e3c1
e3d2
e3a7
e3b6
e3c5
e3d4
e3g1
e3f2
f3g3
f3g2
f3f2
f3e2
a2a4
a2a3

## Board State Fen
4r1k1/8/5bp1/1R3p1p/5P2/4BK2/P7/8 w - - 0 44
assistant
a2a4