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
d4e3
d4d3
b6b5
a7a5
a7a6
b7a6
b7a8
b7e4
b7d5
b7c6
d7c5
d7b8
d7f8
h7h4
h7h5
h7h6
c8a8
c8b8
c8c4
c8c5
c8c6
c8c7
c8g8
c8f8
c8e8
c8d8
h8g8
h8g7

## Board State Fen
2r4k/pb1n3r/1p3p2/4pR2/1PPpP1PR/P3QNP1/2B3K1/8 b - - 0 40
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
d4e3
d4d3
b6b5
a7a5
a7a6
b7a6
b7a8
b7e4
b7d5
b7c6
d7c5
d7b8
d7f8
h7h4
h7h5
h7h6
c8a8
c8b8
c8c4
c8c5
c8c6
c8c7
c8g8
c8f8
c8e8
c8d8
h8g8
h8g7

## Board State Fen
2r4k/pb1n3r/1p3p2/4pR2/1PPpP1PR/P3QNP1/2B3K1/8 b - - 0 40
assistant
d4e3