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
d6a3
d6b4
d6c5
d6b8
d6c7
d6h2
d6g3
d6f4
d6e5
d6e7
g6g5
a6a5
b7b5
b7b6
e6h3
e6g4
e6f5
c6c5
d7c5
d7e5
d7b6
d7b8
d7f6
f7f5
f7f6
h7h5
h7h6
a8a7
a8d8
a8c8
a8b8
e8f6
e8c7
e8g7
g8h8
g8g7

## Board State Fen
r3nrk1/1p1n1p1p/p1pqb1p1/3p4/N2P4/P2BPN1P/1PQ2PP1/R4RK1 b - - 2 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
d6a3
d6b4
d6c5
d6b8
d6c7
d6h2
d6g3
d6f4
d6e5
d6e7
g6g5
a6a5
b7b5
b7b6
e6h3
e6g4
e6f5
c6c5
d7c5
d7e5
d7b6
d7b8
d7f6
f7f5
f7f6
h7h5
h7h6
a8a7
a8d8
a8c8
a8b8
e8f6
e8c7
e8g7
g8h8
g8g7

## Board State Fen
r3nrk1/1p1n1p1p/p1pqb1p1/3p4/N2P4/P2BPN1P/1PQ2PP1/R4RK1 b - - 2 15
assistant
d6e7