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
a2a4
a2a3
b2b4
b2b3
c2d1
c2c1
c2b1
g3g4
c5a5
c5b5
c5c3
c5c4
c5d5
c5c6
a6a3
a6a4
a6a5
a6c6
a6b6
a6a8
a6a7

## Board State Fen
6k1/5r2/R1p2p2/2Rp4/3P4/4rnP1/PPK5/8 w - - 0 38
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
a2a4
a2a3
b2b4
b2b3
c2d1
c2c1
c2b1
g3g4
c5a5
c5b5
c5c3
c5c4
c5d5
c5c6
a6a3
a6a4
a6a5
a6c6
a6b6
a6a8
a6a7

## Board State Fen
6k1/5r2/R1p2p2/2Rp4/3P4/4rnP1/PPK5/8 w - - 0 38
assistant
a6c6