merge

app/src/main/java/gui/RenderableMultidoku.java

@@ -28,7 +28,7 @@ public class RenderableMultidoku {
 	}
 
 	public boolean isResolved() {
-		return this.doku.isValid();
+		return this.doku.isSolved();
 	}
 
 	public int getWidth() {

app/src/main/java/sudoku/structure/Sudoku.java

@@ -363,7 +363,7 @@ public class Sudoku {
 	 */
 	private boolean isValid() {
 		for (Cell cell : this.getFilledCells()) {
-			for (IConstraint constraint : this.constraints) {
+			for (Constraint constraint : this.constraints) {
 				try {
 					Coordinate coords = this.getCoordinateCell(cell);
 

app/src/main/java/sudoku/structure/SudokuFactory.java

@@ -9,6 +9,8 @@ import java.util.List;
 import java.util.Map;
 import java.util.Random;
 
+import sudoku.io.SudokuSerializer;
+
 import sudoku.constraint.BlockConstraint;
 import sudoku.constraint.ColumnConstraint;
 import sudoku.constraint.Constraint;