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
c1a1
c1b1
c1h1
c1g1
c1f1
c1e1
c1d1
c1c2
f2g3
f2g2
f2g1
f2f1
f2e2
f2e1
c3c4
e3e4
f3f4
d4c5
d4f6
d4e5
g4g5
h4h5
b6a6
b6b1
b6b2
b6b3
b6b4
b6b5
b6e6
b6d6
b6c6
b6b7

## Board State Fen
8/1prb2pk/pR2rp1p/P2p4/3B2PP/2P1PP2/5K2/2R5 w - - 5 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
c1a1
c1b1
c1h1
c1g1
c1f1
c1e1
c1d1
c1c2
f2g3
f2g2
f2g1
f2f1
f2e2
f2e1
c3c4
e3e4
f3f4
d4c5
d4f6
d4e5
g4g5
h4h5
b6a6
b6b1
b6b2
b6b3
b6b4
b6b5
b6e6
b6d6
b6c6
b6b7

## Board State Fen
8/1prb2pk/pR2rp1p/P2p4/3B2PP/2P1PP2/5K2/2R5 w - - 5 31
assistant
c1b1