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
f1a1
f1b1
f1c1
f1d1
f1e1
h2h4
h2h3
g2g4
g2g3
c2c4
c2c3
b2a1
b2c1
b2h8
b2g7
b2f6
b2e5
b2d4
b2c3
b2a2
b2b1
g1h1
a3a1
a3a2
a3a4
b3a4
b3b4
d3d4
f3e1
f3e5
f3g5
f3d2
f3d4
f3h4
e4e5
d5c3
d5c7
d5e3
d5e7
d5b4
d5b6
d5f4
d5f6

## Board State Fen
r4rk1/1q1npp1p/2np2p1/2pN4/p3P3/RP1P1N2/1QP2PPP/5RK1 w - - 0 18
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
f1a1
f1b1
f1c1
f1d1
f1e1
h2h4
h2h3
g2g4
g2g3
c2c4
c2c3
b2a1
b2c1
b2h8
b2g7
b2f6
b2e5
b2d4
b2c3
b2a2
b2b1
g1h1
a3a1
a3a2
a3a4
b3a4
b3b4
d3d4
f3e1
f3e5
f3g5
f3d2
f3d4
f3h4
e4e5
d5c3
d5c7
d5e3
d5e7
d5b4
d5b6
d5f4
d5f6

## Board State Fen
r4rk1/1q1npp1p/2np2p1/2pN4/p3P3/RP1P1N2/1QP2PPP/5RK1 w - - 0 18
assistant
h2h3