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
b5a4
c6d7
c6c7
c6b7
d6b4
d6c5
d6b8
d6c7
d6g3
d6f4
d6e5
d6f8
d6e7
e6e5
a7a4
a7a5
a7a6
a7e7
a7d7
a7c7
a7b7
f7f5
f7f6
a8h8
a8g8
a8f8
a8e8
a8d8
a8c8
a8b8

## Board State Fen
r7/r4p2/2kbp1p1/1p1p2Np/NP1P3P/2PK2P1/5P2/RR6 b - - 0 36
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
b5a4
c6d7
c6c7
c6b7
d6b4
d6c5
d6b8
d6c7
d6g3
d6f4
d6e5
d6f8
d6e7
e6e5
a7a4
a7a5
a7a6
a7e7
a7d7
a7c7
a7b7
f7f5
f7f6
a8h8
a8g8
a8f8
a8e8
a8d8
a8c8
a8b8

## Board State Fen
r7/r4p2/2kbp1p1/1p1p2Np/NP1P3P/2PK2P1/5P2/RR6 b - - 0 36
assistant
b5a4