diff --git a/src/GeneticSimulation.cpp b/src/GeneticSimulation.cpp
index 25e13c8..4ab154c 100644
--- a/src/GeneticSimulation.cpp
+++ b/src/GeneticSimulation.cpp
@@ -1,17 +1,13 @@
 #include <fstream>
 #include <iostream>
-
+#include <thread>
 #include "GeneticSimulation.hpp"
 #include "Game.hpp"
 #include "Specimen.hpp"
 
 void GeneticSimulation::simulate(){
  
-  std::cout << dist(gen) << std::endl;
-  
-
   for(int i = 0; i < numSpecimen; i++){
-
     Heuristic h1, h2;
     for(int j = 0; j < Heuristic::numFeatures; j++){
       h1.set(j, dist(gen));
@@ -26,17 +22,19 @@ void GeneticSimulation::simulate(){
   int cntBlack=0, cntWhite=0, cntTies=0;
   int cntTieBlack=0, cntTieWhite=0;
   
-  while(population.size() > 1){
+  while(population.size() > numSpecimen/5){
     Specimen a = population.front();
     population.pop();
     Specimen b = population.front();
     population.pop();
 
+
     Game game1(a, b);
     Game game2(b, a);
 
     int winner = 0;
-    game1.play(&winner);
+ 
+    std::thread t1(game1.play,&winner);
 
     if(winner == 0){
       game2.play(&winner);
@@ -56,7 +54,7 @@ void GeneticSimulation::simulate(){
 	cntBlack++;
       }
       else if(winner == 2){
-	population.push(a);
+	population.push(b);
 	cntWhite++;
       }
       else cntTies++;