Nurikabe: Bottle Neck rule for Black
Closed this issue · 2 comments
Bram28 commented
Add a Bottle Neck rule for Black:
The user is allowed to place black in a square when that square is the only possible way to make a connection between two areas containing at least one black.
Bram28 commented
In other words: A cell can be made black when that cell being white would create an Isolated Black contradiction.