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
b6b5
d6d5
e6e5
g6g5
b7a8
b7e4
b7d5
b7c6
b7c8
d7c5
d7e5
d7f6
d7f8
e7h4
e7g5
e7f6
e7f8
e7e8
f7f5
f7f6
g7d4
g7e5
g7f6
g7f8
g7h6
g7h8
h7h5
h7h6
b8a8
b8c8
d8c8
d8f8
d8e8
g8h8
g8f8

## Board State Fen
1r1r2k1/1b1nqpbp/pp1pp1p1/8/2PNP2P/1PN1Q1P1/P2R1PB1/4R1K1 b - - 5 20
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
b6b5
d6d5
e6e5
g6g5
b7a8
b7e4
b7d5
b7c6
b7c8
d7c5
d7e5
d7f6
d7f8
e7h4
e7g5
e7f6
e7f8
e7e8
f7f5
f7f6
g7d4
g7e5
g7f6
g7f8
g7h6
g7h8
h7h5
h7h6
b8a8
b8c8
d8c8
d8f8
d8e8
g8h8
g8f8

## Board State Fen
1r1r2k1/1b1nqpbp/pp1pp1p1/8/2PNP2P/1PN1Q1P1/P2R1PB1/4R1K1 b - - 5 20
assistant
d7e5