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
f1a1
f1b1
f1c1
f1d1
f1e1
g1h1
a2a4
a2a3
d2c1
d2a5
d2b4
d2c3
d2e1
d2f4
d2e3
d2b2
d2c2
d2d1
d2e2
d2d6
d2d5
d2d4
d2d3
g2g4
g2g3
h2h4
h2h3
f3d1
f3e2
f3c6
f3d5
f3e4
f3h5
f3g4
g5e3
g5f4
g5e7
g5f6
g5h4
g5h6
b7a7
b7b1
b7b2
b7b3
b7b4
b7b5
b7b6
b7e7
b7d7
b7c7
b7b8

## Board State Fen
rnq2rk1/pR2pp1p/3b2p1/2p3B1/8/5B2/P2Q1PPP/5RK1 w - - 1 18
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
f1a1
f1b1
f1c1
f1d1
f1e1
g1h1
a2a4
a2a3
d2c1
d2a5
d2b4
d2c3
d2e1
d2f4
d2e3
d2b2
d2c2
d2d1
d2e2
d2d6
d2d5
d2d4
d2d3
g2g4
g2g3
h2h4
h2h3
f3d1
f3e2
f3c6
f3d5
f3e4
f3h5
f3g4
g5e3
g5f4
g5e7
g5f6
g5h4
g5h6
b7a7
b7b1
b7b2
b7b3
b7b4
b7b5
b7b6
b7e7
b7d7
b7c7
b7b8

## Board State Fen
rnq2rk1/pR2pp1p/3b2p1/2p3B1/8/5B2/P2Q1PPP/5RK1 w - - 1 18
assistant
g5h6