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
e6a2
e6b3
e6c4
e6d5
e6c8
e6d7
e6h3
e6g4
e6f5
e6d6
e6e4
e6e5
f6e4
f6g4
f6d5
f6d7
f6h5
f6h7
b6a4
b6a8
b6c4
b6c8
b6d5
b6d7
a7a5
a7a6
g6g5
c6c5
e7a3
e7b4
e7c5
e7d6
e7d8
e7f8
e8a8
e8b8
e8c8
e8d8
e8f8
g8h8
g8h7
g8f8

## Board State Fen
4r1k1/pp2bpp1/1np1qnp1/8/4PB2/2NR2P1/PP2QPBP/7K 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
e6a2
e6b3
e6c4
e6d5
e6c8
e6d7
e6h3
e6g4
e6f5
e6d6
e6e4
e6e5
f6e4
f6g4
f6d5
f6d7
f6h5
f6h7
b6a4
b6a8
b6c4
b6c8
b6d5
b6d7
a7a5
a7a6
g6g5
c6c5
e7a3
e7b4
e7c5
e7d6
e7d8
e7f8
e8a8
e8b8
e8c8
e8d8
e8f8
g8h8
g8h7
g8f8

## Board State Fen
4r1k1/pp2bpp1/1np1qnp1/8/4PB2/2NR2P1/PP2QPBP/7K b - - 2 21
assistant
e7b4