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
e1a1
e1b1
e1c1
e1d1
e1e6
e1e5
e1e4
e1e3
e1e2
f1g2
f1g1
f1e2
b2b4
b2b3
d2c4
d2e4
d2b1
d2b3
d2f3
f2f4
f2f3
h2h4
h2h3
c3c4
d3c1
d3c5
d3e5
d3b4
d3f4
g3g4
a4a1
a4a2
a4a3
a4c4
a4b4
a5a6

## Board State Fen
1r4k1/ppr2ppp/3npn2/P2p4/R2P4/2PN2P1/1P1N1P1P/4RK2 w - - 7 23
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
e1a1
e1b1
e1c1
e1d1
e1e6
e1e5
e1e4
e1e3
e1e2
f1g2
f1g1
f1e2
b2b4
b2b3
d2c4
d2e4
d2b1
d2b3
d2f3
f2f4
f2f3
h2h4
h2h3
c3c4
d3c1
d3c5
d3e5
d3b4
d3f4
g3g4
a4a1
a4a2
a4a3
a4c4
a4b4
a5a6

## Board State Fen
1r4k1/ppr2ppp/3npn2/P2p4/R2P4/2PN2P1/1P1N1P1P/4RK2 w - - 7 23
assistant
a4a1