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
c3a1
c3b2
c3a5
c3b4
c3e1
c3d2
c3h8
c3g7
c3f6
c3e5
c3d4
d3d1
d3d2
d3g3
d3f3
d3e3
d3d8
d3d7
d3d6
d3d5
d3d4
f5f4
g5g4
h6h5
g8h8
g8h7
g8g7
g8f8
g8f7

## Board State Fen
6k1/8/7p/5pp1/8/R1br2P1/5PKP/5N2 b - - 1 39
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
c3a1
c3b2
c3a5
c3b4
c3e1
c3d2
c3h8
c3g7
c3f6
c3e5
c3d4
d3d1
d3d2
d3g3
d3f3
d3e3
d3d8
d3d7
d3d6
d3d5
d3d4
f5f4
g5g4
h6h5
g8h8
g8h7
g8g7
g8f8
g8f7

## Board State Fen
6k1/8/7p/5pp1/8/R1br2P1/5PKP/5N2 b - - 1 39
assistant
f5f4