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
a1g1
a1f1
a1e1
a1d1
a1c1
a1b1
a1a6
a1a5
a1a4
a1a3
a1a2
h1b1
h1c1
h1d1
h1e1
h1f1
h1g1
b2b3
d2c1
d2e1
d2h6
d2g5
d2f4
d2e3
e2f2
e2f1
e2e3
e2e1
e2d1
h2h4
h2h3
c3b1
c3b5
c3d1
c3d5
c3a2
c3a4
c3e4
d3c1
d3c5
d3e1
d3e5
d3f2
d3f4
f3f4
b4b5
g4g5

## Board State Fen
r2r4/1p2kppp/pn1b1n2/3p4/1P1P2P1/2NN1P2/1P1BK2P/R6R 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
a1g1
a1f1
a1e1
a1d1
a1c1
a1b1
a1a6
a1a5
a1a4
a1a3
a1a2
h1b1
h1c1
h1d1
h1e1
h1f1
h1g1
b2b3
d2c1
d2e1
d2h6
d2g5
d2f4
d2e3
e2f2
e2f1
e2e3
e2e1
e2d1
h2h4
h2h3
c3b1
c3b5
c3d1
c3d5
c3a2
c3a4
c3e4
d3c1
d3c5
d3e1
d3e5
d3f2
d3f4
f3f4
b4b5
g4g5

## Board State Fen
r2r4/1p2kppp/pn1b1n2/3p4/1P1P2P1/2NN1P2/1P1BK2P/R6R w - - 1 19
assistant
b4b5