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
h1a1
h1b1
h1c1
h1d1
h1e1
h1f1
h1g1
h1h8
h1h7
h1h6
h1h5
h1h4
h1h3
h1h2
f2f3
g2h3
g2h2
g2g1
g2f1
g3g4
a4a5
c4b4
c4c1
c4c2
c4c3
c4c6
c4c5
f4b8
f4c7
f4d6
f4e5
f4h6
f4g5

## Board State Fen
3r2k1/1p6/2p2bp1/3r1p2/PpRPpB2/4P1P1/5PK1/7R w - - 0 40
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
h1a1
h1b1
h1c1
h1d1
h1e1
h1f1
h1g1
h1h8
h1h7
h1h6
h1h5
h1h4
h1h3
h1h2
f2f3
g2h3
g2h2
g2g1
g2f1
g3g4
a4a5
c4b4
c4c1
c4c2
c4c3
c4c6
c4c5
f4b8
f4c7
f4d6
f4e5
f4h6
f4g5

## Board State Fen
3r2k1/1p6/2p2bp1/3r1p2/PpRPpB2/4P1P1/5PK1/7R w - - 0 40
assistant
c4b4