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
a2a3
c2b4
c2d4
c2a1
c2a3
c2e1
c2e3
e2f1
e2e1
e2d1
b3b4
f3f4
g3g4
h3h4
a4b2
a4b6
a4c3
a4c5
b5a6
b5d3
b5c4
b5d7
b5c6

## Board State Fen
8/3n4/3k2bp/1Bp3p1/N2b4/1Pp2PPP/P1N1K3/8 w - - 3 38
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
a2a3
c2b4
c2d4
c2a1
c2a3
c2e1
c2e3
e2f1
e2e1
e2d1
b3b4
f3f4
g3g4
h3h4
a4b2
a4b6
a4c3
a4c5
b5a6
b5d3
b5c4
b5d7
b5c6

## Board State Fen
8/3n4/3k2bp/1Bp3p1/N2b4/1Pp2PPP/P1N1K3/8 w - - 3 38
assistant
b5d3