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
e1b1
e1c1
e1d1
e1f1
e1e4
e1e3
e1e2
a1d1
a1c1
a1b1
g1h2
g1h1
g1f1
a2a4
a2a3
c2c4
c2c3
d2c1
d2b4
d2c3
d2h6
d2g5
d2f4
d2e3
d2d1
d2e2
d2d3
f2f4
f2f3
g2g4
g2g3
h3h4
d4c6
d4e2
d4e6
d4b3
d4b5
d4f3
d4f5

## Board State Fen
5rk1/p1p2pp1/4b2p/2qpP3/1r1N4/7P/P1PQ1PP1/R3R1K1 w - - 1 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
e1b1
e1c1
e1d1
e1f1
e1e4
e1e3
e1e2
a1d1
a1c1
a1b1
g1h2
g1h1
g1f1
a2a4
a2a3
c2c4
c2c3
d2c1
d2b4
d2c3
d2h6
d2g5
d2f4
d2e3
d2d1
d2e2
d2d3
f2f4
f2f3
g2g4
g2g3
h3h4
d4c6
d4e2
d4e6
d4b3
d4b5
d4f3
d4f5

## Board State Fen
5rk1/p1p2pp1/4b2p/2qpP3/1r1N4/7P/P1PQ1PP1/R3R1K1 w - - 1 19
assistant
a1d1