I do not get the strength to divide such hard nucleus if the bevel is down. But the INITIAL ENTRY HAS TO BE BEVEL-DOWN. Because, the tip does not occluded with bevel up.
So, the solution is:
ENTRY IS BEVEL-DOWN,
MAKE A TUNNEL UP TO CENTER,
COME OUT,
MAKE BEVEL-UP,
GO THROUGH THE TUNNEL AND DIVIDE THE NUCLEUS.
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