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
d2c4
d2e4
d2b1
d2b3
d2f1
e2e4
e2e3
c3d4
c3d3
c3c4
c3b3
b4a4
b4b1
b4b2
b4b3
b4f4
b4e4
b4d4
b4c4
b4b8
b4b7
b4b6
b4b5

## Board State Fen
8/5k2/4p1n1/7p/1R3p1P/2K2P2/r2NP3/8 w - - 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
d2c4
d2e4
d2b1
d2b3
d2f1
e2e4
e2e3
c3d4
c3d3
c3c4
c3b3
b4a4
b4b1
b4b2
b4b3
b4f4
b4e4
b4d4
b4c4
b4b8
b4b7
b4b6
b4b5

## Board State Fen
8/5k2/4p1n1/7p/1R3p1P/2K2P2/r2NP3/8 w - - 0 36
assistant
b4b7