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
b2b4
b2b3
a2a4
a2a3
e1f2
e1f1
e1d2
e2d3
e2f1
e2h5
e2g4
e2f3
h1h3
h1h2
g1f3
g1h3
d1a4
d1b3
d1c2
d1b1
d1c1
d1d6
d1d5
d1d4
d1d3
d1d2
a1c1
a1b1
g2g4
g2g3
c3b1
c3b5
c3d5
c3a4
e3c1
e3d2
e3a7
e3b6
e3c5
e3d4
e3f2
c4b5
c4c5
e4e5
f4f5
h4h5

## Board State Fen
r1bq1rk1/p1pn2bp/3ppnp1/1p6/2P1PP1P/2N1B3/PP2B1P1/R2QK1NR w KQ b6 0 12
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
b2b4
b2b3
a2a4
a2a3
e1f2
e1f1
e1d2
e2d3
e2f1
e2h5
e2g4
e2f3
h1h3
h1h2
g1f3
g1h3
d1a4
d1b3
d1c2
d1b1
d1c1
d1d6
d1d5
d1d4
d1d3
d1d2
a1c1
a1b1
g2g4
g2g3
c3b1
c3b5
c3d5
c3a4
e3c1
e3d2
e3a7
e3b6
e3c5
e3d4
e3f2
c4b5
c4c5
e4e5
f4f5
h4h5

## Board State Fen
r1bq1rk1/p1pn2bp/3ppnp1/1p6/2P1PP1P/2N1B3/PP2B1P1/R2QK1NR w KQ b6 0 12
assistant
c4b5