1 files changed, 4 insertions, 1 deletions
diff --git a/puzzle.h b/puzzle.h
index 0b5713d..e9d4f13 100644
--- a/puzzle.h
+++ b/puzzle.h
@@ -17,7 +17,7 @@
  * with this program; if not, write to the Free Software Foundation, Inc.,
  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  *
- * $Id: puzzle.h 106 2007-12-03 23:28:24Z tom $
+ * $Id: puzzle.h 109 2008-01-06 19:43:20Z tom $
  */
 
 #ifndef VDR_SUDOKU_PUZZLE_H
@@ -166,6 +166,9 @@ namespace Sudoku
     /** Get the count of possible numbers for this cell. */
     unsigned int numbers_count(Pos pos);
 
+    /** Is this number in this cell a possible number? */
+    bool possible_number(Pos pos, unsigned int number);
+
 private:
 
     /** Compute all possible numbers for this cell. */