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
f5c2
f5d3
f5e4
f5d7
f5e6
f5h3
f5g4
f5g6
f5c5
f5d5
f5e5
f5f2
f5f3
f5f4
f5h5
f5g5
b5b4
c6c5
d6a3
d6b4
d6c5
d6b8
d6c7
d6g3
d6f4
d6e5
d6f8
d6e7
f6e4
f6g4
f6d5
f6d7
f6h5
g7g5
g7g6
h7h5
h7h6
a8a7
a8b8
c8b7
c8e6
c8d7
e8d8
e8e1
e8e2
e8e3
e8e4
e8e5
e8e6
e8e7
e8f8
g8h8
g8f8

## Board State Fen
r1b1r1k1/5ppp/p1pb1n2/1p3q2/3P3R/2P3P1/PPB2P1P/RNBQ2K1 b - - 6 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
f5c2
f5d3
f5e4
f5d7
f5e6
f5h3
f5g4
f5g6
f5c5
f5d5
f5e5
f5f2
f5f3
f5f4
f5h5
f5g5
b5b4
c6c5
d6a3
d6b4
d6c5
d6b8
d6c7
d6g3
d6f4
d6e5
d6f8
d6e7
f6e4
f6g4
f6d5
f6d7
f6h5
g7g5
g7g6
h7h5
h7h6
a8a7
a8b8
c8b7
c8e6
c8d7
e8d8
e8e1
e8e2
e8e3
e8e4
e8e5
e8e6
e8e7
e8f8
g8h8
g8f8

## Board State Fen
r1b1r1k1/5ppp/p1pb1n2/1p3q2/3P3R/2P3P1/PPB2P1P/RNBQ2K1 b - - 6 20
assistant
f5e6