public void showAllCandidates() {
for (int row = 0; row < grid.getCellsPerEdge(); row++) {
for (int col = 0; col < grid.getCellsPerEdge(); col++) {
showCandidates(row, col);
}
}
notifyObservers();
}
public int getCellsPerRow() {
return grid.getCellsPerEdge();
}