No need to go to all that trouble and expense. Apparently, all we need is a microscopic black hole. Apparently, once it fixes its greedy sights on Earth, it will gobble its way through from one side to the other and back again. Finally, it will settle in the earths core and then eat the earth away from the inside.
I seem to remember mentioning that full stops “.” were going to be a problem.
The other way is to get a catapault, wrap it around Mars, pull back, aim Mars at the Earth and let go. Hey presto, we get blasted to smithereens. Of course it will have to be quite a large catapault.