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
a2a1
a2h2
a2g2
a2f2
a2e2
a2d2
a2c2
a2b2
a2a3
b6a5
b6g1
b6f2
b6e3
b6d4
b6c5
b6d8
b6c7
a7a5
a7a6
c8d8
c8d7
c8b7

## Board State Fen
2k5/p7/1b6/4B2p/R6P/P4P1K/r7/8 b - - 11 43
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
a2a1
a2h2
a2g2
a2f2
a2e2
a2d2
a2c2
a2b2
a2a3
b6a5
b6g1
b6f2
b6e3
b6d4
b6c5
b6d8
b6c7
a7a5
a7a6
c8d8
c8d7
c8b7

## Board State Fen
2k5/p7/1b6/4B2p/R6P/P4P1K/r7/8 b - - 11 43
assistant
c8d7