diff --git a/src/app/app.module.ts b/src/app/app.module.ts
index 01984a5..704b745 100644
--- a/src/app/app.module.ts
+++ b/src/app/app.module.ts
@@ -24,8 +24,9 @@ import {
   ConfigReadyService,
   IdeConfigService,
   DashboardConfigService,
-  SiteConfigService
+  SiteConfigService,
 } from './services/config.service';
+import { FSMUpdateService } from './services/fsmupdate.service';
 import { LoaderComponent } from './loader/loader.component';
 
 
@@ -59,7 +60,8 @@ import { LoaderComponent } from './loader/loader.component';
     ConfigReadyService,
     IdeConfigService,
     DashboardConfigService,
-    SiteConfigService
+    SiteConfigService,
+    FSMUpdateService
   ],
   bootstrap: [
     AppComponent
diff --git a/src/app/console/console.component.ts b/src/app/console/console.component.ts
index 5c07a78..ae2dd96 100644
--- a/src/app/console/console.component.ts
+++ b/src/app/console/console.component.ts
@@ -22,7 +22,7 @@ export class ConsoleComponent implements OnInit {
 
   ngOnInit() {
     this.webSocketService.connect();
-    this.webSocketService.observeKey<WebSocketMessage>('console').subscribe(
+    this.webSocketService.observeControl<WebSocketMessage>('console').subscribe(
       message => this.command_handlers[message.key](message)
     );
   }
diff --git a/src/app/dashboard/dashboard.component.ts b/src/app/dashboard/dashboard.component.ts
index d445b81..3faf602 100644
--- a/src/app/dashboard/dashboard.component.ts
+++ b/src/app/dashboard/dashboard.component.ts
@@ -6,6 +6,7 @@ import { WebSocketMessage } from '../message-types/websocket-message';
 import { DashboardConfigService } from '../services/config.service';
 import { HttpClient } from '@angular/common/http';
 import { delay, retryWhen, tap } from 'rxjs/operators';
+import { FSMUpdateService } from '../services/fsmupdate.service';
 
 @Component({
   selector: 'app-dashboard',
@@ -37,11 +38,13 @@ export class DashboardComponent implements OnInit, OnDestroy {
               private webSocketService: WebSocketService,
               private changeDetectorRef: ChangeDetectorRef,
               private http: HttpClient,
-              private configService: DashboardConfigService) {}
+              private configService: DashboardConfigService,
+              private fsmUpdateService: FSMUpdateService) {}
 
   ngOnInit() {
     this.webSocketService.connect();
     this.configService.init();
+    this.subscribeCheckSolution();
     this.hideIframeUntilResponseOk();
     this.subscribeResizeOnLayoutChange();
     this.initCommandHandling();
@@ -49,6 +52,15 @@ export class DashboardComponent implements OnInit, OnDestroy {
     this.sendReady();
   }
 
+  subscribeCheckSolution() {
+    this.fsmUpdateService.init();
+    this.fsmUpdateService.in_accepted_state.subscribe(in_accepted_state => {
+      if (in_accepted_state) {
+        window.parent.postMessage('check solution', '*');
+      }
+    });
+  }
+
   hideIframeUntilResponseOk() {
     // TODO: hide iframe and show it after this whole deal...
     this.reloadIframeWhenResponseOk();
@@ -62,7 +74,7 @@ export class DashboardComponent implements OnInit, OnDestroy {
   }
 
   initCommandHandling() {
-    this.webSocketService.observeKey<WebSocketMessage>('dashboard').subscribe(message => {
+    this.webSocketService.observeControl<WebSocketMessage>('dashboard').subscribe(message => {
       this.command_handlers[message.key](message);
       this.changeDetectorRef.detectChanges();
     });
diff --git a/src/app/ide/ide.component.ts b/src/app/ide/ide.component.ts
index 1a6b8c4..d64b0e4 100644
--- a/src/app/ide/ide.component.ts
+++ b/src/app/ide/ide.component.ts
@@ -67,18 +67,18 @@ export class IdeComponent implements OnInit {
   }
 
   subscribeWS() {
-    this.webSocketService.observeKey<WebSocketMessage>('ide').subscribe(message => {
+    this.webSocketService.observeControl<WebSocketMessage>('ide').subscribe(message => {
       this.command_handlers[message.key](message);
       this.changeDetectorRef.detectChanges();
     });
 
-    this.webSocketService.observeKey<DeployMessage>('deploy.finish').subscribe(
+    this.webSocketService.observeControl<DeployMessage>('deploy.finish').subscribe(
       message => this.deployHandler(message)
     );
   }
 
   subscribeFirstLanguageDetection() {
-    this.webSocketService.observeKey<IDEMessage>('ide.read').pipe(first()).subscribe(
+    this.webSocketService.observeControl<IDEMessage>('ide.read').pipe(first()).subscribe(
       () => this.autoDetectEditorLanguage(this.filename)
     );
   }
diff --git a/src/app/message-types/fsm-update-message.ts b/src/app/message-types/fsm-update-message.ts
new file mode 100644
index 0000000..3cb840c
--- /dev/null
+++ b/src/app/message-types/fsm-update-message.ts
@@ -0,0 +1,6 @@
+import { WebSocketMessage } from './websocket-message';
+
+export interface FSMUpdateMessage extends WebSocketMessage {
+  current_state: string;
+  in_accepted_state: boolean;
+}
diff --git a/src/app/messages/messages.component.ts b/src/app/messages/messages.component.ts
index ecb7866..9600c1a 100644
--- a/src/app/messages/messages.component.ts
+++ b/src/app/messages/messages.component.ts
@@ -30,7 +30,7 @@ export class MessagesComponent implements OnInit {
     });
 
     this.websocketService.connect();
-    this.websocketService.observeKey<Message>('message.send').subscribe(
+    this.websocketService.observeControl<Message>('message.send').subscribe(
       message => this.newMessage.next(message)
     );
   }
diff --git a/src/app/services/config.service.base.ts b/src/app/services/config.service.base.ts
index b0e4d2f..c32e47b 100644
--- a/src/app/services/config.service.base.ts
+++ b/src/app/services/config.service.base.ts
@@ -36,7 +36,7 @@ export abstract class ConfigServiceBase {
   subscribeConfigKeys() {
     this.webSocketService.connect();
     this.keys.forEach(key =>
-        this.webSocketService.observeKey<any>(key).subscribe(this.handleConfig.bind(this))
+        this.webSocketService.observeControl<any>(key).subscribe(this.handleConfig.bind(this))
     );
   }
 
diff --git a/src/app/services/config.service.ts b/src/app/services/config.service.ts
index 30b638e..e28be78 100644
--- a/src/app/services/config.service.ts
+++ b/src/app/services/config.service.ts
@@ -70,7 +70,7 @@ export class ConfigReadyService {
 
     const recvdConfigDone = new Subject<void>();
     this.readyNotifiers.push(recvdConfigDone);
-    this.webSocketService.observeKey<any>('frontend.ready').subscribe(() => {
+    this.webSocketService.observeControl<any>('frontend.ready').subscribe(() => {
       recvdConfigDone.next();
       recvdConfigDone.complete();
     });
diff --git a/src/app/services/fsmupdate.service.ts b/src/app/services/fsmupdate.service.ts
new file mode 100644
index 0000000..3d229af
--- /dev/null
+++ b/src/app/services/fsmupdate.service.ts
@@ -0,0 +1,20 @@
+import { Injectable } from '@angular/core';
+import { WebSocketService } from './websocket.service';
+import { FSMUpdateMessage } from '../message-types/fsm-update-message';
+import { Subject } from 'rxjs';
+
+@Injectable()
+export class FSMUpdateService {
+  public current_state = new Subject<string>();
+  public in_accepted_state = new Subject<boolean>();
+
+  constructor(private websocketService: WebSocketService) {}
+
+  public init() {
+    this.websocketService.connect();
+    this.websocketService.observeAll<FSMUpdateMessage>('fsm.update').subscribe((message) => {
+      this.current_state.next(message.current_state);
+      this.in_accepted_state.next(message.in_accepted_state);
+    });
+  }
+}
diff --git a/src/app/services/websocket.service.ts b/src/app/services/websocket.service.ts
index ace7edf..353d2cc 100644
--- a/src/app/services/websocket.service.ts
+++ b/src/app/services/websocket.service.ts
@@ -28,10 +28,15 @@ export class WebSocketService {
     }
   }
 
-  public observeKey<T extends WebSocketMessage>(key: string): Observable<T> {
+  public observeControl<T extends WebSocketMessage>(key: string): Observable<T> {
+    return this.observeAll<T>(key).pipe(
+      filter(message => message.intent !== Intent.EVENT)
+    );
+  }
+
+  public observeAll<T extends WebSocketMessage>(key: string): Observable<T> {
     return this.ws.pipe(
       filter(message => message.key.startsWith(key)),
-      filter(message => message.intent !== Intent.EVENT),
       map(message => <T> message)
     );
   }
diff --git a/src/app/testmessenger/testmessenger.component.ts b/src/app/testmessenger/testmessenger.component.ts
index 9a4d42f..147ebf5 100644
--- a/src/app/testmessenger/testmessenger.component.ts
+++ b/src/app/testmessenger/testmessenger.component.ts
@@ -13,7 +13,7 @@ export class TestmessengerComponent implements OnInit {
 
   ngOnInit() {
     this.webSocketService.connect();
-    this.webSocketService.observeKey('').subscribe();
+    this.webSocketService.observeControl('').subscribe();
   }
 
   sendTestMessage() {