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
b1a1
b1e1
b1d1
b1c1
b1b6
b1b5
b1b4
b1b3
b1b2
g1h1
g1g2
d3d4
f2f4
f2f3
c2c3
h2h4
h2h3
a2a4
a2a3
f1c1
f1d1
f1e1
e3c1
e3d2
e3b6
e3c5
e3d4
e3h6
e3g5
e3f4
c4c5
e4d2
e4d6
e4f6
e4c3
e4c5
e4g5
g4d1
g4e2
g4f3
g4f5
g4h3
g4h5
g4f4
g4h4
g4g7
g4g6
g4g5

## Board State Fen
5rk1/p1p2qpp/1ppbn3/4pr2/2P1N1Q1/3PB1P1/P1P2P1P/1R3RK1 w - - 10 19
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
b1a1
b1e1
b1d1
b1c1
b1b6
b1b5
b1b4
b1b3
b1b2
g1h1
g1g2
d3d4
f2f4
f2f3
c2c3
h2h4
h2h3
a2a4
a2a3
f1c1
f1d1
f1e1
e3c1
e3d2
e3b6
e3c5
e3d4
e3h6
e3g5
e3f4
c4c5
e4d2
e4d6
e4f6
e4c3
e4c5
e4g5
g4d1
g4e2
g4f3
g4f5
g4h3
g4h5
g4f4
g4h4
g4g7
g4g6
g4g5

## Board State Fen
5rk1/p1p2qpp/1ppbn3/4pr2/2P1N1Q1/3PB1P1/P1P2P1P/1R3RK1 w - - 10 19
assistant
h2h4