@@ -10,13 +10,43 @@
 	Solver solver;
 	bool fin;
 	override void on_game_changed(char c, in Game g, bool finished) { fin = finished; }
 }
+
+class ForSafety : GameObserver
+{
+	this(in Game g)
+	{
+		if(g.map.W*g.map.H <= 1000)
+		{
+			try {
+				score_log ~= g.score;
+				auto fast_solver = new FastSolver(g);
+				foreach(_; 0..g.map.W*g.map.H) {
+					char c = fast_solver.single_step();
+					if(c=='A') break;
+					const(Game) gg = fast_solver.current_game;
+					log ~= c;
+					score_log ~= gg.score;
+					if(gg.cleared || gg.dead) break;
+				}
+			} catch {
+				log = null;
+				score_log = null;
+			}
+		}
+	}
+	override void on_game_changed(char c, in Game g, bool finished) {}
+	string log;
+	long[] score_log;
+}
 
 void main()
 {
 	auto d = new Driver(stdin);
-	d.addObserver!(GuardedOutput)();
+	auto o = d.addObserver!(GuardedOutput)();
 	auto c = d.addObserver!(CUI!MainSolver)();
+	auto f = d.addObserver!(ForSafety)();
+	o.safety_data(f.log, f.score_log);
 	while(!c.fin)
 		d.command(c.solver.single_step());
 }