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
f2f3
g2h2
g2h1
g2g1
g2f1
b5a5
b5e5
b5d5
b5c5
b5b8
b5b7
b5b6

## Board State Fen
8/8/r7/1R2p3/1P2Pkp1/8/5PK1/8 w - - 0 50
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
f2f3
g2h2
g2h1
g2g1
g2f1
b5a5
b5e5
b5d5
b5c5
b5b8
b5b7
b5b6

## Board State Fen
8/8/r7/1R2p3/1P2Pkp1/8/5PK1/8 w - - 0 50
assistant
b5b8