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
b2a1
b2a3
b2c1
b2h8
b2g7
b2f6
b2e5
b2d4
b2c3
d3e3
d3e2
d3d4
d3d2
d3c3
d3c2
a4a5
c4c5

## Board State Fen
8/1p6/2k5/5p1p/P1P5/3K2b1/1B4P1/8 w - - 1 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
b2a1
b2a3
b2c1
b2h8
b2g7
b2f6
b2e5
b2d4
b2c3
d3e3
d3e2
d3d4
d3d2
d3c3
d3c2
a4a5
c4c5

## Board State Fen
8/1p6/2k5/5p1p/P1P5/3K2b1/1B4P1/8 w - - 1 38
assistant
b2d4