Flip it out
Rearrange the 10 black dots in formation A into formation B by moving three dots.
Submit as the answer, the sum of sums of initial cell number and final cell number of the three dots moved.
For example (of course, not the solution), if the solution is to move
- dot in cell 28 to cell 29
- dot in cell 40 to cell 37
- dot in cell 52 to cell 75
Then the answer is (28+29) + (40+37) + (52+75) = 261.