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
f5a5
f5b5
f5c5
f5d5
f5e5
f5h5
f5g5
f5f7
f5f6
c6a4
c6b5
c6f3
c6e4
c6d5
c6e8
c6d7
e6d4
e6d8
e6c5
e6c7
e6g5
e6g7
g6g5
e7d6
h7h5
h7h6
c8a8
c8b8
c8c7
c8e8
c8d8
f8h6
f8g7
f8d8
f8e8
f8f6
f8f7
g8h8
g8g7
g8f7

## Board State Fen
2r2qk1/1p2p2p/pBbPn1p1/P4r2/2P2p2/2N2P2/1PQ3PP/R2R2K1 b - - 0 21
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
f5a5
f5b5
f5c5
f5d5
f5e5
f5h5
f5g5
f5f7
f5f6
c6a4
c6b5
c6f3
c6e4
c6d5
c6e8
c6d7
e6d4
e6d8
e6c5
e6c7
e6g5
e6g7
g6g5
e7d6
h7h5
h7h6
c8a8
c8b8
c8c7
c8e8
c8d8
f8h6
f8g7
f8d8
f8e8
f8f6
f8f7
g8h8
g8g7
g8f7

## Board State Fen
2r2qk1/1p2p2p/pBbPn1p1/P4r2/2P2p2/2N2P2/1PQ3PP/R2R2K1 b - - 0 21
assistant
e7d6