diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
index f318e6c..f416426 100644
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@@ -12,6 +12,29 @@
         android:roundIcon="@mipmap/ic_launcher_round"
         android:supportsRtl="true"
         android:theme="@style/Theme.Activities"
-        tools:targetApi="31" />
+        tools:targetApi="31">
+        <activity
+            android:name=".ActivityA"
+            android:label="ActivityA"
+            android:exported="true"
+            android:launchMode="singleTask">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+        <activity
+            android:name=".ActivityB"
+            android:label="ActivityB"
+            android:exported="false"/>
+        <activity
+            android:name=".ActivityC"
+            android:label="ActivityC"
+            android:exported="false"/>
+        <activity
+            android:name=".ActivityD"
+            android:label="ActivityD"
+            android:exported="false"/>
+    </application>
 
 </manifest>
\ No newline at end of file
diff --git a/app/src/main/java/otus/gpb/homework/activities/ActivityA.kt b/app/src/main/java/otus/gpb/homework/activities/ActivityA.kt
new file mode 100644
index 0000000..ec98210
--- /dev/null
+++ b/app/src/main/java/otus/gpb/homework/activities/ActivityA.kt
@@ -0,0 +1,64 @@
+package otus.gpb.homework.activities
+
+import android.content.Intent
+import android.os.Bundle
+import android.util.Log
+import android.widget.Button
+import androidx.appcompat.app.AppCompatActivity
+
+val TAG: String = "TAG"
+
+class ActivityA : AppCompatActivity() {
+
+    private var buttonToB: Button? = null
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        setContentView(R.layout.activity_a)
+
+        buttonToB = findViewById(R.id.button_a)
+        buttonToB?.setOnClickListener {
+            intent = Intent(this, ActivityB::class.java).apply {
+                addFlags(Intent.FLAG_ACTIVITY_NEW_TASK)
+                addFlags(Intent.FLAG_ACTIVITY_MULTIPLE_TASK)
+            }
+            startActivity(intent)
+        }
+        Log.i(TAG, "${javaClass.simpleName}: onCreate")
+    }
+
+    override fun onNewIntent(intent: Intent?) {
+        super.onNewIntent(intent)
+        Log.i(TAG, "${javaClass.simpleName}: onNewIntent")
+    }
+
+    override fun onRestart() {
+        super.onRestart()
+        Log.i(TAG, "${javaClass.simpleName}: onRestart")
+    }
+
+    override fun onStart() {
+        super.onStart()
+        Log.i(TAG, "${javaClass.simpleName}: onStart")
+    }
+
+    override fun onResume() {
+        super.onResume()
+        Log.i(TAG, "${javaClass.simpleName}: onResume")
+    }
+
+    override fun onPause() {
+        super.onPause()
+        Log.i(TAG, "${javaClass.simpleName}: onPause")
+    }
+
+    override fun onStop() {
+        super.onStop()
+        Log.i(TAG, "${javaClass.simpleName}: onStop")
+    }
+
+    override fun onDestroy() {
+        super.onDestroy()
+        Log.i(TAG, "${javaClass.simpleName}: onDestroy")
+    }
+}
\ No newline at end of file
diff --git a/app/src/main/java/otus/gpb/homework/activities/ActivityB.kt b/app/src/main/java/otus/gpb/homework/activities/ActivityB.kt
new file mode 100644
index 0000000..880eb33
--- /dev/null
+++ b/app/src/main/java/otus/gpb/homework/activities/ActivityB.kt
@@ -0,0 +1,58 @@
+package otus.gpb.homework.activities
+
+import android.content.Intent
+import android.os.Bundle
+import android.util.Log
+import android.widget.Button
+import androidx.appcompat.app.AppCompatActivity
+
+class ActivityB : AppCompatActivity() {
+
+    private var buttonToC: Button? = null
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        setContentView(R.layout.activity_b)
+
+        buttonToC = findViewById(R.id.button_b)
+        buttonToC?.setOnClickListener {
+            startActivity(Intent(this, ActivityC::class.java))
+        }
+        Log.i(TAG, "${javaClass.simpleName}: onCreate")
+    }
+
+    override fun onNewIntent(intent: Intent?) {
+        super.onNewIntent(intent)
+        Log.i(TAG, "${javaClass.simpleName}: onNewIntent")
+    }
+
+    override fun onRestart() {
+        super.onRestart()
+        Log.i(TAG, "${javaClass.simpleName}: onRestart")
+    }
+
+    override fun onStart() {
+        super.onStart()
+        Log.i(TAG, "${javaClass.simpleName}: onStart")
+    }
+
+    override fun onResume() {
+        super.onResume()
+        Log.i(TAG, "${javaClass.simpleName}: onResume")
+    }
+
+    override fun onPause() {
+        super.onPause()
+        Log.i(TAG, "${javaClass.simpleName}: onPause")
+    }
+
+    override fun onStop() {
+        super.onStop()
+        Log.i(TAG, "${javaClass.simpleName}: onStop")
+    }
+
+    override fun onDestroy() {
+        super.onDestroy()
+        Log.i(TAG, "${javaClass.simpleName}: onDestroy")
+    }
+}
\ No newline at end of file
diff --git a/app/src/main/java/otus/gpb/homework/activities/ActivityC.kt b/app/src/main/java/otus/gpb/homework/activities/ActivityC.kt
new file mode 100644
index 0000000..9279fd0
--- /dev/null
+++ b/app/src/main/java/otus/gpb/homework/activities/ActivityC.kt
@@ -0,0 +1,81 @@
+package otus.gpb.homework.activities
+
+import android.content.Intent
+import android.os.Bundle
+import android.util.Log
+import android.widget.Button
+import androidx.appcompat.app.AppCompatActivity
+
+class ActivityC : AppCompatActivity() {
+
+    private var buttonOpenA: Button? = null
+    private var buttonOpenD: Button? = null
+    private var buttonCloseC: Button? = null
+    private var buttonCloseStack: Button? = null
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        setContentView(R.layout.activity_c)
+
+        buttonOpenA = findViewById(R.id.button_open_a)
+        buttonOpenA?.setOnClickListener {
+            startActivity(Intent(this, ActivityA::class.java))
+        }
+
+        buttonOpenD = findViewById(R.id.button_open_d)
+        buttonOpenD?.setOnClickListener {
+            intent = Intent(this, ActivityD::class.java).apply {
+                addFlags(Intent.FLAG_ACTIVITY_NEW_TASK)
+                addFlags(Intent.FLAG_ACTIVITY_CLEAR_TASK)
+            }
+            startActivity(intent)
+        }
+
+        buttonCloseC = findViewById(R.id.button_close_c)
+        buttonCloseC?.setOnClickListener {
+            finish()
+        }
+
+        buttonCloseStack = findViewById(R.id.button_close_stack)
+        buttonCloseStack?.setOnClickListener {
+            finishAffinity()
+        }
+
+        Log.i(TAG, "${javaClass.simpleName}: onCreate")
+    }
+
+    override fun onNewIntent(intent: Intent?) {
+        super.onNewIntent(intent)
+        Log.i(TAG, "${javaClass.simpleName}: onNewIntent")
+    }
+
+    override fun onRestart() {
+        super.onRestart()
+        Log.i(TAG, "${javaClass.simpleName}: onRestart")
+    }
+
+    override fun onStart() {
+        super.onStart()
+        Log.i(TAG, "${javaClass.simpleName}: onStart")
+    }
+
+    override fun onResume() {
+        super.onResume()
+        Log.i(TAG, "${javaClass.simpleName}: onResume")
+    }
+
+    override fun onPause() {
+        super.onPause()
+        Log.i(TAG, "${javaClass.simpleName}: onPause")
+    }
+
+    override fun onStop() {
+        super.onStop()
+        Log.i(TAG, "${javaClass.simpleName}: onStop")
+    }
+
+    override fun onDestroy() {
+        super.onDestroy()
+        Log.i(TAG, "${javaClass.simpleName}: onDestroy")
+    }
+}
\ No newline at end of file
diff --git a/app/src/main/java/otus/gpb/homework/activities/ActivityD.kt b/app/src/main/java/otus/gpb/homework/activities/ActivityD.kt
new file mode 100644
index 0000000..fa6633a
--- /dev/null
+++ b/app/src/main/java/otus/gpb/homework/activities/ActivityD.kt
@@ -0,0 +1,53 @@
+package otus.gpb.homework.activities
+
+import android.content.Intent
+import android.os.Bundle
+import android.util.Log
+import android.widget.Button
+import androidx.appcompat.app.AppCompatActivity
+
+class ActivityD : AppCompatActivity() {
+
+    private var buttonToC: Button? = null
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        setContentView(R.layout.activity_d)
+        Log.i(TAG, "${javaClass.simpleName}: onCreate")
+    }
+
+    override fun onNewIntent(intent: Intent?) {
+        super.onNewIntent(intent)
+        Log.i(TAG, "${javaClass.simpleName}: onNewIntent")
+    }
+
+    override fun onRestart() {
+        super.onRestart()
+        Log.i(TAG, "${javaClass.simpleName}: onRestart")
+    }
+
+    override fun onStart() {
+        super.onStart()
+        Log.i(TAG, "${javaClass.simpleName}: onStart")
+    }
+
+    override fun onResume() {
+        super.onResume()
+        Log.i(TAG, "${javaClass.simpleName}: onResume")
+    }
+
+    override fun onPause() {
+        super.onPause()
+        Log.i(TAG, "${javaClass.simpleName}: onPause")
+    }
+
+    override fun onStop() {
+        super.onStop()
+        Log.i(TAG, "${javaClass.simpleName}: onStop")
+    }
+
+    override fun onDestroy() {
+        super.onDestroy()
+        Log.i(TAG, "${javaClass.simpleName}: onDestroy")
+    }
+}
\ No newline at end of file
diff --git a/app/src/main/res/layout/activity_a.xml b/app/src/main/res/layout/activity_a.xml
new file mode 100644
index 0000000..08e8de8
--- /dev/null
+++ b/app/src/main/res/layout/activity_a.xml
@@ -0,0 +1,23 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:id="@+id/activity_a"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:background="#f44336"
+    tools:context=".ActivityA">
+
+    <Button
+        android:id="@+id/button_a"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginBottom="27dp"
+        android:text="@string/buttonOpenB"
+        android:textAllCaps="false"
+        android:textSize="22sp"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintHorizontal_bias="0.5"
+        app:layout_constraintStart_toStartOf="parent" />
+</androidx.constraintlayout.widget.ConstraintLayout>
\ No newline at end of file
diff --git a/app/src/main/res/layout/activity_b.xml b/app/src/main/res/layout/activity_b.xml
new file mode 100644
index 0000000..cf4825a
--- /dev/null
+++ b/app/src/main/res/layout/activity_b.xml
@@ -0,0 +1,24 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:id="@+id/activity_b"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:background="#4caf50"
+    tools:context=".ActivityB">
+
+    <Button
+        android:id="@+id/button_b"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginBottom="27dp"
+        android:text="@string/buttonOpenC"
+        android:textAllCaps="false"
+        android:textSize="22sp"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintHorizontal_bias="0.5"
+        app:layout_constraintStart_toStartOf="parent" />
+
+</androidx.constraintlayout.widget.ConstraintLayout>
\ No newline at end of file
diff --git a/app/src/main/res/layout/activity_c.xml b/app/src/main/res/layout/activity_c.xml
new file mode 100644
index 0000000..cd64bed
--- /dev/null
+++ b/app/src/main/res/layout/activity_c.xml
@@ -0,0 +1,52 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:id="@+id/activity_c"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:orientation="vertical"
+    android:background="#2196f3"
+    tools:context=".ActivityC">
+
+    <Button
+        android:id="@+id/button_open_a"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginBottom="27dp"
+        android:text="@string/buttonOpenA"
+        android:textAllCaps="false"
+        android:textSize="22sp"
+        android:layout_gravity="bottom|center_horizontal" />
+
+    <Button
+        android:id="@+id/button_open_d"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginBottom="27dp"
+        android:text="@string/buttonOpenD"
+        android:textAllCaps="false"
+        android:textSize="22sp"
+        android:layout_gravity="bottom|center_horizontal" />
+
+    <Button
+        android:id="@+id/button_close_c"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginBottom="27dp"
+        android:text="@string/buttonCloseC"
+        android:textAllCaps="false"
+        android:textSize="22sp"
+        android:layout_gravity="bottom|center_horizontal" />
+
+    <Button
+        android:id="@+id/button_close_stack"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginBottom="27dp"
+        android:text="@string/buttonCloseStack"
+        android:textAllCaps="false"
+        android:textSize="22sp"
+        android:layout_gravity="bottom|center_horizontal" />
+
+</LinearLayout>
\ No newline at end of file
diff --git a/app/src/main/res/layout/activity_d.xml b/app/src/main/res/layout/activity_d.xml
new file mode 100644
index 0000000..9543305
--- /dev/null
+++ b/app/src/main/res/layout/activity_d.xml
@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:id="@+id/activity_d"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:background="#ffeb3b"
+    tools:context=".ActivityD">
+
+</androidx.constraintlayout.widget.ConstraintLayout>
\ No newline at end of file
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index 08ea3c6..4feb9a4 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -1,3 +1,11 @@
 <resources>
     <string name="app_name">Activities</string>
+
+    <string name="buttonOpenA">Open ActivityA</string>
+    <string name="buttonOpenB">Open ActivityB</string>
+    <string name="buttonOpenC">Open ActivityC</string>
+    <string name="buttonOpenD">Open ActivityD</string>
+
+    <string name="buttonCloseC">Close ActivityC</string>
+    <string name="buttonCloseStack">Close Stack</string>
 </resources>
\ No newline at end of file