diff --git a/TMI-practicum/Program.cs b/TMI-practicum/Program.cs
index 39337e2..72ce782 100644
--- a/TMI-practicum/Program.cs
+++ b/TMI-practicum/Program.cs
@@ -62,23 +62,37 @@ namespace TMI_practicum
                 Console.WriteLine("start check {0}", i++);
                 var circles = CreateRandomCircles(5);
 
-                var correctSol = SweepLineAlgorithm.Solve(circles);
-                var solved = SweepLineEffAlgorithm.Solve(circles);
+                var correctSol = SimpleAlgorithm.Solve(circles);
+                var solved = SweepLineAlgorithm.Solve(circles);
                 
                 foreach (var intersection in correctSol)
                 {
                     if (solved.Contains(intersection)) continue;
 
-                    if (solved.Contains(new Intersection(intersection.X + 10e-15, intersection.Y)) ||
-                        solved.Contains(new Intersection(intersection.X - 10e-15, intersection.Y)) ||
-                        solved.Contains(new Intersection(intersection.X + 10e-15, intersection.Y + 10e-15)) ||
-                        solved.Contains(new Intersection(intersection.X + 10e-15, intersection.Y - 10e-15)) ||
-                        solved.Contains(new Intersection(intersection.X - 10e-15, intersection.Y - 10e-15)) ||
-                        solved.Contains(new Intersection(intersection.X - 10e-15, intersection.Y - 10e-15)) ||
-                        solved.Contains(new Intersection(intersection.X, intersection.Y + 10e-15)) ||
-                        solved.Contains(new Intersection(intersection.X, intersection.Y - 10e-15))
+                    if (solved.Contains(new Intersection(intersection.X + 1e-15, intersection.Y)) ||
+                        solved.Contains(new Intersection(intersection.X - 1e-15, intersection.Y)) ||
+                        solved.Contains(new Intersection(intersection.X + 1e-15, intersection.Y + 1e-15)) ||
+                        solved.Contains(new Intersection(intersection.X + 1e-15, intersection.Y - 1e-15)) ||
+                        solved.Contains(new Intersection(intersection.X - 1e-15, intersection.Y + 1e-15)) ||
+                        solved.Contains(new Intersection(intersection.X - 1e-15, intersection.Y - 1e-15)) ||
+                        solved.Contains(new Intersection(intersection.X, intersection.Y + 1e-15)) ||
+                        solved.Contains(new Intersection(intersection.X, intersection.Y - 1e-15))
                     ) continue;
 
+                    bool found = false;
+                    
+                    foreach (var ints in solved)
+                    {
+                        if (Math.Abs(ints.X - intersection.X) < 1e-12 &&
+                            Math.Abs(ints.Y - intersection.Y) < 1e-12)
+                        {
+                            found = true;
+                            break;
+                        }
+                    }
+
+                    if (found) continue;
+
                     Console.WriteLine(InCircles(circles));
                     
                     failed = true;