Your overall plan is the correct one. As for getting the vertical separation, pay close attention to what happens when one of the miners moves diagonally against a cliff edge.
More specifics if you need them:
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×With 5 tiles of horizontal space between them, get the right miner stuck pointing NE on the cliff edge while the left one moves diagonally up two spaces. This should let you cave out the spaces with the miner on the left. If you need to get more horizontal space between them...
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×the pit at (18,20) comes in useful.
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Links to neat forum tools that I always have trouble finding:
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[Last edited by Insoluble at 02-21-2021 02:12 AM]
