1 files changed, 8 insertions, 0 deletions
diff --git a/src/cell.h b/src/cell.h
index 5b38403..e81a7c4 100644
--- a/src/cell.h
+++ b/src/cell.h
@@ -6,15 +6,23 @@ class Cell {
 	
 public:
 	Cell();
+	Cell(const Cell & other);
+	
+	void assign(const Cell & other);
 	
 	// inspector
 	inline int value() const { return cell_value; }
+
+	inline int possibility(const int value) { return cell_possibility[value]; }
 	
 	// mutator
 	void set_value(int value);
 	
+	void set_possibility(int value, bool possible = true);
+	
 private:
 	int cell_value;
+	bool cell_possibility[9];
 };
 
 #endif // __INCLUDED_SUDOKUSOLVER_CELL__