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
a1b1
a1a3
a1a2
c1b1
c1f1
c1e1
c1d1
c1c2
g1h2
g1h1
g1f1
b2b4
b2b3
e2e4
e2e3
f2f4
f2f3
g2f1
g2c6
g2d5
g2e4
g2f3
g2h1
g2h3
c3b1
c3b5
c3d1
c3d5
c3a2
c3e4
g3g4
h4d8
h4e7
h4f6
h4g5
h4b4
h4c4
h4d4
h4e4
h4f4
h4g4
h4h1
h4h2
h4h3
h4h7
h4h6
h4h5
f5e3
f5e7
f5g7
f5d4
f5d6
f5h6

## Board State Fen
2kr1b1r/1pq2p1p/2p3n1/p1n2N2/P6Q/2N3P1/1P2PPB1/R1R3K1 w - - 4 20
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
a1b1
a1a3
a1a2
c1b1
c1f1
c1e1
c1d1
c1c2
g1h2
g1h1
g1f1
b2b4
b2b3
e2e4
e2e3
f2f4
f2f3
g2f1
g2c6
g2d5
g2e4
g2f3
g2h1
g2h3
c3b1
c3b5
c3d1
c3d5
c3a2
c3e4
g3g4
h4d8
h4e7
h4f6
h4g5
h4b4
h4c4
h4d4
h4e4
h4f4
h4g4
h4h1
h4h2
h4h3
h4h7
h4h6
h4h5
f5e3
f5e7
f5g7
f5d4
f5d6
f5h6

## Board State Fen
2kr1b1r/1pq2p1p/2p3n1/p1n2N2/P6Q/2N3P1/1P2PPB1/R1R3K1 w - - 4 20
assistant
h4c4