diff --git a/lab11/game_of_life/test.cpp b/lab11/game_of_life/test.cpp
index 589f494..59907e6 100644
--- a/lab11/game_of_life/test.cpp
+++ b/lab11/game_of_life/test.cpp
@@ -16,7 +16,7 @@ TEST(test_underpopulation) {
   check(end(0, 0), 0);
 }
 
-TEST(test_survive) {
+TEST(test_survive_2) {
   Matrix start = Matrix::zeros(10);
   start(0, 0) = 1;
   start(0, 1) = 1;
@@ -25,6 +25,16 @@ TEST(test_survive) {
   check(end(0, 0), 1);
 }
 
+TEST(test_survive_3) {
+  Matrix start = Matrix::zeros(10);
+  start(0, 0) = 1;
+  start(1, 1) = 1;
+  start(0, 1) = 1;
+  start(1, 0) = 1;
+  Matrix end = init_step(start);
+  check(end(0, 0), 1);
+}
+
 TEST(test_overpopulation) {
   Matrix start = Matrix::zeros(10);
   start(1, 1) = 1;