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
b3c2
b3b4
b3a4
b3a3
b3a2
b2a1
b2a3
b2c1
b2d4
b2c3
d3b1
d3c2
d3f1
d3e2
c4c5

## Board State Fen
8/8/1p1np2p/4k1pP/2PbP1P1/1K1B4/1B6/8 w - - 5 63
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
b3c2
b3b4
b3a4
b3a3
b3a2
b2a1
b2a3
b2c1
b2d4
b2c3
d3b1
d3c2
d3f1
d3e2
c4c5

## Board State Fen
8/8/1p1np2p/4k1pP/2PbP1P1/1K1B4/1B6/8 w - - 5 63
assistant
b2a3