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
a7a5
a7a6
d5b3
d5c4
d5b7
d5c6
d5h1
d5g2
d5f3
d5e4
d5e6
g7h8
g7h7
g7g8
a8e8
a8d8
a8c8
a8b8
f8b8
f8c8
f8d8
f8e8
f8h8
f8g8
h6h5
g6g5

## Board State Fen
r4r2/p1R2pk1/6pp/3bP3/5B1P/1P6/P2K1P2/6R1 b - - 0 23
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
a7a5
a7a6
d5b3
d5c4
d5b7
d5c6
d5h1
d5g2
d5f3
d5e4
d5e6
g7h8
g7h7
g7g8
a8e8
a8d8
a8c8
a8b8
f8b8
f8c8
f8d8
f8e8
f8h8
f8g8
h6h5
g6g5

## Board State Fen
r4r2/p1R2pk1/6pp/3bP3/5B1P/1P6/P2K1P2/6R1 b - - 0 23
assistant
f8c8