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
a1h1
a1g1
a1f1
a1e1
a1d1
a1c1
a1b1
a1a8
a1a7
a1a6
a1a5
a1a4
a1a3
a1a2
c4a2
c4b3
c4b5
c4f1
c4e2
c4d3
c4e6
c4d5
c4a4
c4b4
c4c1
c4c2
c4c3
c4d4
c4c8
c4c7
c4c6
c4c5
h6h5
f7f5
f7f6
g7g5
g7g6
g8h8
g8h7
g8f8

## Board State Fen
6k1/5pp1/1R5p/1Q6/2q1p3/4P2P/5PPK/r7 b - - 2 31
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
a1h1
a1g1
a1f1
a1e1
a1d1
a1c1
a1b1
a1a8
a1a7
a1a6
a1a5
a1a4
a1a3
a1a2
c4a2
c4b3
c4b5
c4f1
c4e2
c4d3
c4e6
c4d5
c4a4
c4b4
c4c1
c4c2
c4c3
c4d4
c4c8
c4c7
c4c6
c4c5
h6h5
f7f5
f7f6
g7g5
g7g6
g8h8
g8h7
g8f8

## Board State Fen
6k1/5pp1/1R5p/1Q6/2q1p3/4P2P/5PPK/r7 b - - 2 31
assistant
c4b5