merge

app/src/main/java/sudoku/constraint/BlockConstraint.java

@@ -8,8 +8,15 @@ public class BlockConstraint implements IConstraint{
 
 	@Override
 	public boolean canBePlaced(final Sudoku s, int x, int y, int newSymbolIndex) {
-		Block bloc = s.getCell(x, y).getBlock();
-		return !bloc.getCells().contains(new MutableCell(newSymbolIndex));
+
+		/*
+		boolean result = true;
+		for (Block block : s.getCell(x, y).getBlockContainers()) {
+			result = result && (!block.getCells().contains(new MutableCell(newSymbolIndex)));
+		}
+		 */
+		return !s.getBlocks().getCells().contains(new MutableCell(newSymbolIndex));
+
 	}
 
 }