diff --git a/Mock_SQL3.sql b/Mock_SQL3.sql
new file mode 100644
index 0000000..3f10ba8
--- /dev/null
+++ b/Mock_SQL3.sql
@@ -0,0 +1,40 @@
+# Solution
+with cte as
+(
+    select *,
+        (   
+            case
+                when first_score > second_score then first_score
+                when first_score < second_score then second_score
+                when first_score = second_score and first_player < second_player then first_score
+                when first_score = second_score and first_player > second_player then second_score
+            end
+        ) as high_score,
+        (
+            case
+                when first_score > second_score then first_player
+                when first_score < second_score then second_player
+                when first_score = second_score and first_player < second_player then first_player
+                when first_score = second_score and first_player > second_player then second_player
+            end
+        ) as high_score_player_id
+        
+    from Matches
+),
+cte2 as
+(
+    select p1.group_id, c.first_player, c.second_player, c.first_score, c.second_score, c.high_score, c.high_score_player_id,
+    dense_rank() over(partition by p1.group_id order by c.high_score desc) as ranks
+    from cte c
+    join Players p1
+    on p1.player_id = c.first_player
+    union 
+    select p2.group_id, c.first_player, c.second_player, c.first_score, c.second_score, c.high_score, c.high_score_player_id,
+    dense_rank() over(partition by p2.group_id order by c.high_score desc) as ranks
+    from cte c
+    join Players p2
+    on p2.player_id = c.second_player
+)
+select group_id, high_score_player_id as player_id
+from cte2
+where ranks = 1
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