diff --git a/iOS/src/Main.Platform.swift b/iOS/src/Main.Platform.swift
index 9c6073a..9b6b007 100644
--- a/iOS/src/Main.Platform.swift
+++ b/iOS/src/Main.Platform.swift
@@ -1,9 +1,11 @@
+import Combine
 import UIKit
 
 // MARK: - Ядро-VC
 
 extension Main {
   class Core: UIViewController {
+    let didSelectButton = PassthroughSubject<Int, Never>()
     var buttons = [UIButton]()
 
     override func viewDidLoad() {
@@ -13,6 +15,11 @@ extension Main {
 
       Main.Section16Buttons.setupCore(self)
       Main.SectionGrid.setupCore(self)
+      Main.SectionSelection.setupCore(self)
+    }
+
+    @objc func selectButton(_ btn: UIButton) {
+      didSelectButton.send(btn.tag)
     }
   }
 }
diff --git a/iOS/src/Main.SectionSelection.swift b/iOS/src/Main.SectionSelection.swift
new file mode 100644
index 0000000..8074ecc
--- /dev/null
+++ b/iOS/src/Main.SectionSelection.swift
@@ -0,0 +1,23 @@
+import UIKit
+
+// MARK: - Протоколы
+
+protocol MainSectionSelection { }
+
+// MARK: - Реализация
+
+extension Main {
+  enum SectionSelection {
+    static func setupCore(_ core: Main.Core) {
+      // Учитываем нажатия кнопок.
+      for btn in core.buttons {
+        btn.addTarget(core, action: #selector(Main.Core.selectButton), for: .touchUpInside)
+      }
+
+      // Выводим номер нажатой кнопки.
+      didSelectButton
+        .sink { i in print("ИГР MainSS.setupC didSB: '\(i)'") }
+        .store(in: &core.subscriptions)
+    }
+  }
+}