Nanodaemons: Selenography
The Chinese probe refused to give permission. "It's my moon," it sent back laconically.
The Russian lander, brazen as ever, proceeded with the moon landing.
Chang'e shot it down with its laser. It wasn't even that hard to do, it had been storing electricity with its solar panels for so long, and with the moon having no atmosphere, it could fire directly and engage at the speed of light.
The travel time from Earth to the moon is ridiculously long. Chang'e had three days to observe the Russian lander as it approached, and three more weeks as it slowly glided into place.
Just like Chang'e itself, it was autonomous, since the tidally-locked companion to our home planet keeps the dark side always facing the other way. That makes everything harder, communication re
