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
c4a2
c4b3
c4a6
c4b5
c4f1
c4e2
c4d3
c4d5
c5b4
c5f2
c5e3
c5d4
c5e7
c5d6
c5a5
c5b5
c5h5
c5g5
c5f5
c5e5
c5d5
b6a4
b6c8
b6d5
b6d7
e6e5
a7a5
a7a6
f7f5
f7f6
g7g5
g7g6
h7h5
h7h6
a8e8
a8d8
a8c8
a8b8
f8b8
f8c8
f8d8
f8e8
g8h8

## Board State Fen
r4rk1/p4ppp/1np1p3/2q5/1Qb1P3/2P3P1/P2B1PBP/R2R2K1 b - - 4 17
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
c4a2
c4b3
c4a6
c4b5
c4f1
c4e2
c4d3
c4d5
c5b4
c5f2
c5e3
c5d4
c5e7
c5d6
c5a5
c5b5
c5h5
c5g5
c5f5
c5e5
c5d5
b6a4
b6c8
b6d5
b6d7
e6e5
a7a5
a7a6
f7f5
f7f6
g7g5
g7g6
h7h5
h7h6
a8e8
a8d8
a8c8
a8b8
f8b8
f8c8
f8d8
f8e8
g8h8

## Board State Fen
r4rk1/p4ppp/1np1p3/2q5/1Qb1P3/2P3P1/P2B1PBP/R2R2K1 b - - 4 17
assistant
c5h5