diff --git a/tests/functional_tests/difficulty_analysis.cpp b/tests/functional_tests/difficulty_analysis.cpp
new file mode 100644
index 00000000..2a6c2500
--- /dev/null
+++ b/tests/functional_tests/difficulty_analysis.cpp
@@ -0,0 +1,44 @@
+// Copyright (c) 2014-2018 Zano Project
+// Distributed under the MIT/X11 software license, see the accompanying
+// file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
+#include <iostream>
+#include <vector>
+#include <algorithm>
+#include <boost/algorithm/string.hpp>
+#include <boost/tokenizer.hpp>
+
+#include "include_base_utils.h"
+using namespace epee;
+#include "wallet/wallet2.h"
+#include "currency_core/blockchain_storage.h"
+
+
+void run_difficulty_analysis(const std::string& path)
+{
+  std::istringstream fstr(path);
+  if (!fstr.good())
+  {
+    LOG_ERROR("unable to open " << path);
+    return;
+  }
+
+  LOG_PRINT_L0("Loading array...");
+  std::string line;
+  std::vector<std::vector<uint64_t>> blocks;
+  blocks.reserve(140000);
+  while (std::getline(fstr, line))
+  {
+    std::vector<uint64_t> array_num;
+    boost::tokenizer<> tok(line);
+    std::transform(tok.begin(), tok.end(), std::back_inserter(array_num),
+      &boost::lexical_cast<uint64_t, std::string>);
+
+    blocks.push_back(array_num);
+  }
+  LOG_PRINT_L0("Loaded " << blocks.size() << " lines");
+
+
+  return;
+}
+
diff --git a/tests/functional_tests/difficulty_analysis.h b/tests/functional_tests/difficulty_analysis.h
new file mode 100644
index 00000000..aeac7998
--- /dev/null
+++ b/tests/functional_tests/difficulty_analysis.h
@@ -0,0 +1,9 @@
+// Copyright (c) 2014-2018 Zano Project
+// Distributed under the MIT/X11 software license, see the accompanying
+// file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
+
+
+void run_difficulty_analysis(const std::string& path);
+
+