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
a6a5
b6a4
b6a8
b6c4
g6g5
c7c3
c7c4
c7c5
c7c6
d7a4
d7b5
d7c6
d7e8
d7d6
d7d8
e7f5
e7c6
f7f5
f7f6
h7h5
h7h6
c8a8
c8b8
c8e8
c8d8
f8h6
f8g7
g8h8
g8g7

## Board State Fen
2r2bk1/1prqnp1p/pn2p1p1/3pP3/3P1P2/1PN3P1/P2Q1B1P/R1R2BK1 b - - 2 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
a6a5
b6a4
b6a8
b6c4
g6g5
c7c3
c7c4
c7c5
c7c6
d7a4
d7b5
d7c6
d7e8
d7d6
d7d8
e7f5
e7c6
f7f5
f7f6
h7h5
h7h6
c8a8
c8b8
c8e8
c8d8
f8h6
f8g7
g8h8
g8g7

## Board State Fen
2r2bk1/1prqnp1p/pn2p1p1/3pP3/3P1P2/1PN3P1/P2Q1B1P/R1R2BK1 b - - 2 21
assistant
e7f5