ConstructionProblem7/Solution

On a regular board, with "normal" rules, this diagram has the fewest stones:

at and at  

Congrats to fractic for finding it.

On an irregularly sized board, while sticking to the idea of normal rules, tapir's incredible solution seems totally unbeatable:

at , at .  

3x1 board.

If you allow suicide, the problem completely loses its point, but this idea by fractic seemed funny enough to include as a solution:

at , at , at =  

1x1 board, suicide allowed.

Judgment as to whether this diagram is simpler than the previous one is left to the reader.