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
b5b4
b6a5
b6d4
b6c5
b6a6
b6d6
b6c6
e6e5
f6d4
f6e5
f6d8
f6e7
f6h4
f6g5
h6h5
a7a5
a7a6
b7a6
b7a8
b7g2
b7f3
b7e4
b7d5
b7c6
c7d5
c7a6
c7a8
c7e8
d7d5
d7d6
g7g5
g7g6
c8a8
c8b8
c8e8
c8d8
f8d8
f8e8
g8h8
g8h7

## Board State Fen
2r2rk1/pbnp1pp1/1q2pb1p/1p6/3P4/P3P1P1/1P1NQPBP/R1R1N1K1 b - - 6 15
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
b5b4
b6a5
b6d4
b6c5
b6a6
b6d6
b6c6
e6e5
f6d4
f6e5
f6d8
f6e7
f6h4
f6g5
h6h5
a7a5
a7a6
b7a6
b7a8
b7g2
b7f3
b7e4
b7d5
b7c6
c7d5
c7a6
c7a8
c7e8
d7d5
d7d6
g7g5
g7g6
c8a8
c8b8
c8e8
c8d8
f8d8
f8e8
g8h8
g8h7

## Board State Fen
2r2rk1/pbnp1pp1/1q2pb1p/1p6/3P4/P3P1P1/1P1NQPBP/R1R1N1K1 b - - 6 15
assistant
c7d5