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
h1g1
e1c1
e1d2
e1d1
a2a3
f1e3
f1g3
f1d2
a1d1
a1c1
a1b1
e2d1
e2c2
e2d2
e2e3
g2g4
g2g3
h2h4
h2h3
c3c4
d3d4
f3e5
f3g1
f3g5
f3d2
f3d4
f3h4
a4d1
a4c2
a4b3
a4c6
a4b5
e4d5

## Board State Fen
r1b2rk1/1pp2p1p/p1nq1bp1/3pp3/B3P3/2PP1N2/PP2QPPP/R3KN1R w KQ - 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
h1g1
e1c1
e1d2
e1d1
a2a3
f1e3
f1g3
f1d2
a1d1
a1c1
a1b1
e2d1
e2c2
e2d2
e2e3
g2g4
g2g3
h2h4
h2h3
c3c4
d3d4
f3e5
f3g1
f3g5
f3d2
f3d4
f3h4
a4d1
a4c2
a4b3
a4c6
a4b5
e4d5

## Board State Fen
r1b2rk1/1pp2p1p/p1nq1bp1/3pp3/B3P3/2PP1N2/PP2QPPP/R3KN1R w KQ - 0 12
assistant
e4d5