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
b4a2
b4a6
b4c2
b4c6
b4d3
b4d5
a5a4
h6h5
d7a7
d7b7
d7c7
d7d6
d7e7
f7f5
f7f6
g7g5
g7g6
d8a8
d8b8
d8c8
d8f8
d8e8
g8h8
g8h7
g8f8

## Board State Fen
3r2k1/3r1pp1/3Np2p/p1P1P3/1nK5/8/P5PP/3RR3 b - - 2 29
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
b4a2
b4a6
b4c2
b4c6
b4d3
b4d5
a5a4
h6h5
d7a7
d7b7
d7c7
d7d6
d7e7
f7f5
f7f6
g7g5
g7g6
d8a8
d8b8
d8c8
d8f8
d8e8
g8h8
g8h7
g8f8

## Board State Fen
3r2k1/3r1pp1/3Np2p/p1P1P3/1nK5/8/P5PP/3RR3 b - - 2 29
assistant
b4a2