diff --git a/src/Chromosome.cpp b/src/Chromosome.cpp
index 4d6648a..51038af 100644
--- a/src/Chromosome.cpp
+++ b/src/Chromosome.cpp
@@ -47,8 +47,6 @@ Chromosome::Chromosome(const Chromosome& father, const Chromosome& mother)
 
 Chromosome::Chromosome(const Chromosome& other)
 {
-	// reserve to other's size/capacity?
-	
 	this->genes.reserve(other.genes.size());
 	
 	for (auto& ptr : other.genes) {
@@ -59,8 +57,6 @@ Chromosome::Chromosome(const Chromosome& other)
 
 Chromosome& Chromosome::operator=(const Chromosome& other)
 {
-	// reserve to other's size/capacity?
-	
 	this->genes.clear();
 	this->genes.reserve(other.genes.size());
 	
@@ -74,6 +70,22 @@ Chromosome& Chromosome::operator=(const Chromosome& other)
 }
 
 
+Chromosome::Chromosome(Chromosome&& other)
+{
+	std::swap(this->genes, other.genes);
+}
+
+
+Chromosome& Chromosome::operator=(Chromosome&& other)
+{
+	this->genes.clear();
+	
+	std::swap(this->genes, other.genes);
+	
+	return *this;
+}
+
+
 void Chromosome::draw(sf::RenderTarget& target, sf::RenderStates states) const
 {
 	for (auto& geneptr : this->genes) {
diff --git a/src/Chromosome.hpp b/src/Chromosome.hpp
index c1e69e2..3988424 100644
--- a/src/Chromosome.hpp
+++ b/src/Chromosome.hpp
@@ -20,9 +20,10 @@ public:
 	Chromosome();  // create empty chromosome
 	Chromosome(const Chromosome& father, const Chromosome& mother);  // crossover
 	
-	Chromosome(const Chromosome& father);  // copy constructor
-// 	Chromosome& operator=(const Chromosome& chr) = delete;  // copy assignment operator
-	Chromosome& operator=(const Chromosome& chr);  // copy assignment operator
+	Chromosome(const Chromosome& other);  // copy constructor
+	Chromosome& operator=(const Chromosome& other);  // copy assignment operator
+	Chromosome(Chromosome&& other);  // copy constructor
+	Chromosome& operator=(Chromosome&& other);  // copy assignment operator
 	
 	virtual void draw(sf::RenderTarget& target, sf::RenderStates states) const;