Here's a redo of Indiana. I'm not really sure why their districts were so funky looking in the first place.
You need to draw a 10-district plan first.
Then choose a district in the middle of the state to dismantle, and it can't include the Marion County seat. To the extent possible, add 11% of the dismantled district to each of the 9 remaining districts. If you could do this, the old representative won't be able to find enough of his old district available to challenge anyone.
If that isn't possible, try to spread the additions from among several adjoining districts (eg for the Gary district, add 5% going east and 6% going south). But be careful that you don't disrupt the other districts too much.
Alternatively, combine two districts in the middle of the state in a way that the incumbents can't really avoid a primary battle and the distribute the rest of the combined districts as above.
No... You split Marion county amongst the 4 surrounding districts (Good bye Andre Carson)
Find a way to force Vislowsky and silent Joe Donnelly into the same district (bye bye Donnelly)
Create a North Central District (Kokomo, Rochester, Peru, South Bend) which would be represented by Jackie Walorski.