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
b5b4
g5c1
g5d2
g5e3
g5f4
g5e7
g5f6
g5h4
g5h6
a6a5
c6b4
c6d4
c6a5
c6a7
c6e7
f7f5
f7f6
g7g6
h7h5
h7h6
b8a8
b8b6
b8b7
c8b7
c8h3
c8g4
c8f5
c8e6
c8d7
d8a5
d8b6
d8c7
d8f6
d8e7
d8d7
d8e8
f8e8
f8g8
h8g8

## Board State Fen
1rbq1r1k/5ppp/p1np4/1p1Np1b1/4P3/P1P5/1PN1BPPP/R2Q1RK1 b - - 0 15
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
b5b4
g5c1
g5d2
g5e3
g5f4
g5e7
g5f6
g5h4
g5h6
a6a5
c6b4
c6d4
c6a5
c6a7
c6e7
f7f5
f7f6
g7g6
h7h5
h7h6
b8a8
b8b6
b8b7
c8b7
c8h3
c8g4
c8f5
c8e6
c8d7
d8a5
d8b6
d8c7
d8f6
d8e7
d8d7
d8e8
f8e8
f8g8
h8g8

## Board State Fen
1rbq1r1k/5ppp/p1np4/1p1Np1b1/4P3/P1P5/1PN1BPPP/R2Q1RK1 b - - 0 15
assistant
c6e7