diff --git a/src/test/java/puzzles/lightup/rules/BulbsInPathContradictionRuleTest.java b/src/test/java/puzzles/lightup/rules/BulbsInPathContradictionRuleTest.java
index b595fec15..0e7930751 100644
--- a/src/test/java/puzzles/lightup/rules/BulbsInPathContradictionRuleTest.java
+++ b/src/test/java/puzzles/lightup/rules/BulbsInPathContradictionRuleTest.java
@@ -34,6 +34,7 @@ public void BulbsInPathContradictionRule_LightInHorizontalPath() throws InvalidF
         Assert.assertNull(RULE.checkContradictionAt(board, board.getCell(0, 0)));
         Assert.assertNull(RULE.checkContradictionAt(board, board.getCell(2, 0)));
 
+
         Assert.assertNotNull(RULE.checkContradictionAt(board, board.getCell(0, 1)));
     }
 
@@ -67,4 +68,19 @@ public void BulbsInPathContradictionRule_BlockInVerticalPath() throws InvalidFil
 
         Assert.assertNotNull(RULE.checkContradictionAt(board, board.getCell(1, 1)));
     }
+
+    @Test
+    public void BulbsInPathContradictionRule_BlockInHorizontalPath() throws InvalidFileFormatException{
+        TestUtilities.importTestBoard("puzzles/lightup/rules/BulbsInPathContradictionRule/BlockInHorizontalPath", lightUp);
+        TreeNode rootNode = lightUp.getTree().getRootNode();
+        TreeTransition transition = rootNode.getChildren().get(0);
+        transition.setRule(RULE);
+
+        LightUpBoard board = (LightUpBoard) transition.getBoard();
+        Assert.assertNotNull(RULE.checkContradiction(board));
+        Assert.assertNotNull(RULE.checkContradictionAt(board,board.getCell(0,0)));
+        Assert.assertNotNull(RULE.checkContradictionAt(board,board.getCell(2,0)));
+        Assert.assertNotNull(RULE.checkContradictionAt(board,board.getCell(1,1)));
+
+    }
 }
diff --git a/src/test/java/puzzles/lightup/rules/CannotLightACellContradictionRuleTest.java b/src/test/java/puzzles/lightup/rules/CannotLightACellContradictionRuleTest.java
index 447476dbb..7b3ffd2b9 100644
--- a/src/test/java/puzzles/lightup/rules/CannotLightACellContradictionRuleTest.java
+++ b/src/test/java/puzzles/lightup/rules/CannotLightACellContradictionRuleTest.java
@@ -21,13 +21,13 @@ public static void setUp() {
         lightUp = new LightUp();
     }
 
-    @Test 
+    @Test
     //extensive full testing of null and non-null in a 5x5 board
     public void FullLightTest() throws InvalidFileFormatException {
         TestUtilities.importTestBoard("puzzles/lightup/rules/CannotLightACellContradictionRule/FullLightTest", lightUp);
         TreeNode rootNode = lightUp.getTree().getRootNode();
         TreeTransition transition = rootNode.getChildren().get(0);
-        transition.setRule(RULE); 
+        transition.setRule(RULE);
 
         LightUpBoard board = (LightUpBoard) transition.getBoard();
         //confirm there is a contradiction somewhere on the board
@@ -36,7 +36,7 @@ public void FullLightTest() throws InvalidFileFormatException {
         //confirm it is impossible to light up these squares
         Assert.assertNull(RULE.checkContradictionAt(board, board.getCell(1, 3)));
         Assert.assertNull(RULE.checkContradictionAt(board, board.getCell(3, 3)));
-        
+
         //confirm these are not required to be lit because they are already lit or unable to be
         Assert.assertNotNull(RULE.checkContradictionAt(board, board.getCell(0, 0)));
         Assert.assertNotNull(RULE.checkContradictionAt(board, board.getCell(1, 1)));
@@ -44,13 +44,13 @@ public void FullLightTest() throws InvalidFileFormatException {
         Assert.assertNotNull(RULE.checkContradictionAt(board, board.getCell(3, 2)));
     }
 
-    @Test 
+    @Test
     //simple contradiction testing for null and non-null in a 3x3 board
     public void CannotLightMiddleTest() throws InvalidFileFormatException {
         TestUtilities.importTestBoard("puzzles/lightup/rules/CannotLightACellContradictionRule/CannotLight", lightUp);
         TreeNode rootNode = lightUp.getTree().getRootNode();
         TreeTransition transition = rootNode.getChildren().get(0);
-        transition.setRule(RULE); 
+        transition.setRule(RULE);
 
         LightUpBoard board = (LightUpBoard) transition.getBoard();
         //confirm there is a contradiction somewhere on the board
@@ -68,4 +68,24 @@ public void CannotLightMiddleTest() throws InvalidFileFormatException {
         Assert.assertNotNull(RULE.checkContradictionAt(board, board.getCell(1, 2)));
         Assert.assertNotNull(RULE.checkContradictionAt(board, board.getCell(2, 1)));
     }
+
+    @Test
+    public void CanLightTest() throws InvalidFileFormatException {
+        TestUtilities.importTestBoard("puzzles/lightup/rules/CannotLightACellContradictionRule/CanLightTest", lightUp);
+        TreeNode rootNode = lightUp.getTree().getRootNode();
+        TreeTransition transition = rootNode.getChildren().get(0);
+        transition.setRule(RULE);
+
+        LightUpBoard board = (LightUpBoard) transition.getBoard();
+        //confirm there is not a contradiction somewhere on the board
+        Assert.assertNotNull(RULE.checkContradiction(board));
+
+        //confirm that these cells can be lit, are already lit, or that they are just black blocks
+        Assert.assertNotNull(RULE.checkContradictionAt(board, board.getCell(1, 3)));
+        Assert.assertNotNull(RULE.checkContradictionAt(board, board.getCell(3, 3)));
+        Assert.assertNotNull(RULE.checkContradictionAt(board, board.getCell(0, 0)));
+        Assert.assertNotNull(RULE.checkContradictionAt(board, board.getCell(1, 1)));
+        Assert.assertNotNull(RULE.checkContradictionAt(board, board.getCell(1, 0)));
+        Assert.assertNotNull(RULE.checkContradictionAt(board, board.getCell(3, 2)));
+    }
 }
diff --git a/src/test/resources/puzzles/lightup/rules/BulbsInPathContradictionRule/BlockInHorizontalPath b/src/test/resources/puzzles/lightup/rules/BulbsInPathContradictionRule/BlockInHorizontalPath
new file mode 100644
index 000000000..3c8786e54
--- /dev/null
+++ b/src/test/resources/puzzles/lightup/rules/BulbsInPathContradictionRule/BlockInHorizontalPath
@@ -0,0 +1,11 @@
+<Legup>
+    <puzzle name="LightUp">
+        <board width="3" height="3">
+            <cells>
+                <cell value="-4" x="0" y="0"/>
+                <cell value="-1" x="1" y="0"/>
+                <cell value="-4" x="2" y="0"/>
+            </cells>
+        </board>
+    </puzzle>
+</Legup>
\ No newline at end of file
diff --git a/src/test/resources/puzzles/lightup/rules/CannotLightACellContradictionRule/CanLightTest b/src/test/resources/puzzles/lightup/rules/CannotLightACellContradictionRule/CanLightTest
new file mode 100644
index 000000000..4169bf382
--- /dev/null
+++ b/src/test/resources/puzzles/lightup/rules/CannotLightACellContradictionRule/CanLightTest
@@ -0,0 +1,18 @@
+<Legup>
+    <puzzle name="LightUp">
+        <board width="5" height="5">
+            <cells>
+                <cell value="-2" x="1" y="0"/>
+                <cell value="-4" x="2" y="1"/>
+                <cell value="-4" x="0" y="4"/>
+                <cell value="-4" x="4" y="2"/>
+                <cell value="-2" x="1" y="1"/>
+                <cell value="-1" x="1" y="2"/>
+                <cell value="-1" x="2" y="3"/>
+                <cell value="-2" x="1" y="3"/>
+                <cell value="-3" x="3" y="2"/>
+                <cell value="-3" x="3" y="3"/>
+            </cells>
+        </board>
+    </puzzle>
+</Legup>
\ No newline at end of file