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
g1h1
g1g2
a2a4
a2a3
d2c1
d2e1
d2d1
d2e2
f2e2
f2h2
f2g2
f2f6
f2f5
f2f4
f2f3
b3b4
c3b1
c3b5
c3d1
c3d5
c3a4
c3e2
d3d4
e3c5
e3d4
e3g5
e3f4
h3h4
h5g3
h5g7
h5f4
h5f6

## Board State Fen
2kr3r/p2n1b2/1ppq1p1p/2p1b1pN/4P1P1/1PNPB2P/P1PQ1R2/5RK1 w - - 1 21
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
g1h1
g1g2
a2a4
a2a3
d2c1
d2e1
d2d1
d2e2
f2e2
f2h2
f2g2
f2f6
f2f5
f2f4
f2f3
b3b4
c3b1
c3b5
c3d1
c3d5
c3a4
c3e2
d3d4
e3c5
e3d4
e3g5
e3f4
h3h4
h5g3
h5g7
h5f4
h5f6

## Board State Fen
2kr3r/p2n1b2/1ppq1p1p/2p1b1pN/4P1P1/1PNPB2P/P1PQ1R2/5RK1 w - - 1 21
assistant
c3b1