diff --git a/CMakeLists.txt b/CMakeLists.txt
index 72b2372..ccc5364 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -4,7 +4,7 @@ cmake_minimum_required(VERSION 2.8)
 include_directories("${PROJECT_SOURCE_DIR}/include/")
 add_definitions(-std=c++1y)
 
-find_package(Boost REQUIRED COMPONENTS program_options system)
+find_package(Boost REQUIRED COMPONENTS program_options serialization system)
 include_directories(SYSTEM ${Boost_INCLUDE_DIRS})
 set(libs ${libs} ${Boost_LIBRARIES})
 
diff --git a/include/analyzed_grid.hpp b/include/analyzed_grid.hpp
new file mode 100644
index 0000000..bcef08c
--- /dev/null
+++ b/include/analyzed_grid.hpp
@@ -0,0 +1,42 @@
+#pragma once
+
+#include "dynamic_grid.hpp"
+#include "solver.hpp"
+#include "rules.hpp"
+
+#include <boost/archive/text_oarchive.hpp>
+#include <boost/archive/text_iarchive.hpp>
+#include <boost/serialization/serialization.hpp>
+
+#include <fstream>
+
+template <typename Grid>
+struct AnalyzedGrid {
+	Grid grid;
+	Solution<Grid> analysis;
+	BasicRules rules;
+
+private:
+	friend class boost::serialization::access;
+	template<class Archive>
+	void serialize(Archive & ar, const unsigned int version){
+		ar & grid & analysis.solution_traces;
+	}
+};
+
+inline auto grid_from_file(std::string file_path){
+	std::ifstream file(file_path);
+	boost::archive::text_iarchive ar(file);
+
+	AnalyzedGrid<DynamicGrid> ret;
+	ar >> ret;
+	return ret;
+}
+
+inline auto grid_to_file(AnalyzedGrid<DynamicGrid> const & grid, std::string file_path){
+	std::ofstream file(file_path);
+	boost::archive::text_oarchive ar(file);
+
+	ar << grid;
+}
+
diff --git a/include/dynamic_grid.hpp b/include/dynamic_grid.hpp
index 6452e40..5c7eb20 100644
--- a/include/dynamic_grid.hpp
+++ b/include/dynamic_grid.hpp
@@ -2,6 +2,10 @@
 
 #include "utilities.hpp"
 
+#include <boost/serialization/vector.hpp>
+#include <boost/serialization/utility.hpp>
+#include <boost/serialization/serialization.hpp>
+
 #include <cassert>
 #include <utility>
 #include <vector>
@@ -17,6 +21,8 @@ struct DynamicGrid{
 
 	DynamicGrid(int width, int height, std::vector<int> && data);
 
+	DynamicGrid() = default;
+
 	//! \brief Returns an array of all valid positions (may be empty)
 	auto const & all_positions() const{
 		return positions;
@@ -64,6 +70,9 @@ struct DynamicGrid{
 	//! \brief Pretty prints grid to out
 	void print(std::ostream& out) const;
 
+	//! \brief Return a hash of the grid (hopefully unique)
+	size_t hash() const;
+
 private:
 	int W;
 	int H;
@@ -78,6 +87,16 @@ private:
 
 	//! \brief Returns true if the whole column at x is empty
 	auto empty_column(int x);
+
+	friend class boost::serialization::access;
+
+	//! \brief Serializes the grid
+	template<class Archive>
+	void serialize(Archive & ar, const unsigned int version){
+		ar & W & H & grid & positions;
+		// archiving positions is redundant (I'm being lazy here)
+		// consider make_nvp for readable json
+	}
 };
 
 template <typename URNG>
diff --git a/include/rules.hpp b/include/rules.hpp
index b46797d..2eea107 100644
--- a/include/rules.hpp
+++ b/include/rules.hpp
@@ -1,6 +1,7 @@
 #pragma once
 
 struct BasicRules {
+	BasicRules() = default;
 	BasicRules(unsigned int minimal_cluster_size)
 	: min_size(minimal_cluster_size)
 	{}
@@ -15,4 +16,10 @@ struct BasicRules {
 
 private:
 	unsigned int min_size;
+
+	friend class boost::serialization::access;
+	template<class Archive>
+	void serialize(Archive & ar, const unsigned int version){
+		ar & min_size;
+	}
 };
diff --git a/lib/dynamic_grid.cpp b/lib/dynamic_grid.cpp
index 900f68a..55b4283 100644
--- a/lib/dynamic_grid.cpp
+++ b/lib/dynamic_grid.cpp
@@ -1,6 +1,7 @@
 #include "dynamic_grid.hpp"
 #include "colored_output.hpp"
 
+#include <functional>
 #include <iostream>
 
 //! \brief Helper function for all_positions()
@@ -95,3 +96,13 @@ void DynamicGrid::print(std::ostream& out) const {
 		}
 	}
 }
+
+size_t DynamicGrid::hash() const {
+	std::string hs(W*H, '\0');
+	auto it = hs.begin();
+	for(auto&&p : all_positions()){
+		*it++ = static_cast<char>(get(p));
+	}
+
+	return std::hash<std::string>()(hs);
+}
diff --git a/src/PuzzleWuzzleGenerator.cpp b/src/PuzzleWuzzleGenerator.cpp
index cb41113..d2ebdd7 100644
--- a/src/PuzzleWuzzleGenerator.cpp
+++ b/src/PuzzleWuzzleGenerator.cpp
@@ -2,6 +2,7 @@
 #include "clusters.hpp"
 #include "solver.hpp"
 #include "rules.hpp"
+#include "analyzed_grid.hpp"
 
 #include <boost/program_options.hpp>
 
@@ -68,6 +69,13 @@ int main(int argc, char** argv){
 				std::cout << "no solutions\n";
 			}
 		}
+
+		std::string s = solution.solution_traces.empty() ? "u" : "s";
+		std::string filename = "levels/" + std::to_string(w) + "_" + std::to_string(h) + "_" + std::to_string(c) + "_" + s + "_" + std::to_string(field.hash()) + ".lvl";
+		grid_to_file({std::move(field), std::move(solution), rules}, filename);
+		if(verbose){
+			std::cout << filename << "\n\n";
+		}
 	}
 
 	std::cout << solvable << " solvable\n";