diff --git a/coffee/SudokuChecks.class.coffee b/coffee/SudokuChecks.class.coffee
index 0536b67..0bdd27a 100644
--- a/coffee/SudokuChecks.class.coffee
+++ b/coffee/SudokuChecks.class.coffee
@@ -56,14 +56,14 @@ class @SudokuChecks
                 p = (1 << i) | (1 << j)
                 console.log('Now checking (%o, %o) mask: %o', i+1, j+1, p)
                 for k of cells
-                    if cells[k].getValue() is '.' and (cells[k].getMask() & p) is p
+                    if cells[k].getValue() is '.' and cells[k].getMask() is p
                         n++
                         console.log('%d: %d, %d (%o, %o)', n, p, cells[k].getMask(), (p & cells[k].getMask()), ((p & cells[k].getMask()) is p))
                 console.info('Have %d matches.', n) if n > 0
                 if n is 2
                     console.warn('Two matches!')
                     for k of cells
-                        if cells[k].getValue() is '.' and (cells[k].getMask() & p) is p
+                        if cells[k].getValue() is '.' and cells[k].getMask() is p
                             cells[k].setMask(p)
                         else if cells[k].getValue() is '.'
                             curMask = cells[k].getMask()
diff --git a/js/SudokuChecks.class.js b/js/SudokuChecks.class.js
index 3a139d0..90574f2 100644
--- a/js/SudokuChecks.class.js
+++ b/js/SudokuChecks.class.js
@@ -82,7 +82,7 @@
           p = (1 << i) | (1 << j);
           console.log('Now checking (%o, %o) mask: %o', i + 1, j + 1, p);
           for (k in cells) {
-            if (cells[k].getValue() === '.' && (cells[k].getMask() & p) === p) {
+            if (cells[k].getValue() === '.' && cells[k].getMask() === p) {
               n++;
               console.log('%d: %d, %d (%o, %o)', n, p, cells[k].getMask(), p & cells[k].getMask(), (p & cells[k].getMask()) === p);
             }
@@ -93,7 +93,7 @@
           if (n === 2) {
             console.warn('Two matches!');
             for (k in cells) {
-              if (cells[k].getValue() === '.' && (cells[k].getMask() & p) === p) {
+              if (cells[k].getValue() === '.' && cells[k].getMask() === p) {
                 cells[k].setMask(p);
               } else if (cells[k].getValue() === '.') {
                 curMask = cells[k].getMask();