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
f6f5
h6h5
a7a5
a7a6
b7b5
b7b6
c7c6
c7b8
e7d7
e7e6
e7f7
e7e8
g7g5
g7g6
a8b8
c8h3
c8g4
c8f5
c8e6
c8d7

## Board State Fen
r1b5/ppk1r1p1/5p1p/3Rn3/2P1BB2/P1P5/5KPP/1R6 b - - 1 25
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
f6f5
h6h5
a7a5
a7a6
b7b5
b7b6
c7c6
c7b8
e7d7
e7e6
e7f7
e7e8
g7g5
g7g6
a8b8
c8h3
c8g4
c8f5
c8e6
c8d7

## Board State Fen
r1b5/ppk1r1p1/5p1p/3Rn3/2P1BB2/P1P5/5KPP/1R6 b - - 1 25
assistant
b7b6