diff --git a/src/klotski_core/benchmark/benchmark.cc b/src/klotski_core/benchmark/benchmark.cc
index 520aa60..4da3dbb 100644
--- a/src/klotski_core/benchmark/benchmark.cc
+++ b/src/klotski_core/benchmark/benchmark.cc
@@ -226,3 +226,49 @@ double Benchmark::short_code_to_common_code_fast(TIME format) noexcept {
     }
     return time_format(start, format) / (double)all_short_codes.size();
 }
+
+/// ---------------------------- Benchmark Mirror -----------------------------
+
+double Benchmark::vertical_mirror_check(TIME format) noexcept {
+    if (!data_ready) {
+        return -1; // data no ready -> skip
+    }
+    auto start = clock();
+    for (auto &&raw_code : all_raw_codes) {
+        raw_code.is_vertical_mirror();
+    }
+    return time_format(start, format) / (double)all_raw_codes.size();
+}
+
+double Benchmark::horizontal_mirror_check(TIME format) noexcept {
+    if (!data_ready) {
+        return -1; // data no ready -> skip
+    }
+    auto start = clock();
+    for (auto &&raw_code : all_raw_codes) {
+        raw_code.is_horizontal_mirror();
+    }
+    return time_format(start, format) / (double)all_raw_codes.size();
+}
+
+double Benchmark::vertical_mirror_convert(TIME format) noexcept {
+    if (!data_ready) {
+        return -1; // data no ready -> skip
+    }
+    auto start = clock();
+    for (auto &&raw_code : all_raw_codes) {
+        raw_code.to_vertical_mirror();
+    }
+    return time_format(start, format) / (double)all_raw_codes.size();
+}
+
+double Benchmark::horizontal_mirror_convert(TIME format) noexcept {
+    if (!data_ready) {
+        return -1; // data no ready -> skip
+    }
+    auto start = clock();
+    for (auto &&raw_code : all_raw_codes) {
+        raw_code.to_horizontal_mirror();
+    }
+    return time_format(start, format) / (double)all_raw_codes.size();
+}
diff --git a/src/klotski_core/benchmark/benchmark.h b/src/klotski_core/benchmark/benchmark.h
index 0e1bc98..9253c35 100644
--- a/src/klotski_core/benchmark/benchmark.h
+++ b/src/klotski_core/benchmark/benchmark.h
@@ -33,7 +33,6 @@ namespace klotski {
         };
         static void data_preparation() noexcept;
         static double warm_up(uint64_t count) noexcept;
-
         static double range_flip(TIME format = NS) noexcept;
 
         static double all_cases(TIME format = MS) noexcept;
@@ -42,26 +41,27 @@ namespace klotski {
         static double raw_code_check(TIME format = NS) noexcept;
         static double short_code_check(TIME format = NS) noexcept;
         static double common_code_check(TIME format = NS) noexcept;
-
         static double raw_code_check_random(TIME format = NS) noexcept;
         static double short_code_check_random(TIME format = NS) noexcept;
         static double common_code_check_random(TIME format = NS) noexcept;
 
         static double short_code_to_string(TIME format = NS) noexcept;
         static double short_code_from_string(TIME format = NS) noexcept;
-
         static double common_code_to_string(TIME format = NS) noexcept;
         static double common_code_from_string(TIME format = NS) noexcept;
 
         static double common_code_to_raw_code(TIME format = NS) noexcept;
         static double raw_code_to_common_code(TIME format = NS) noexcept;
-
         static double common_code_to_short_code(TIME format = NS) noexcept;
         static double short_code_to_common_code(TIME format = NS) noexcept;
-
         static double common_code_to_short_code_fast(TIME format = NS) noexcept;
         static double short_code_to_common_code_fast(TIME format = NS) noexcept;
 
+        static double vertical_mirror_check(TIME format = NS) noexcept;
+        static double horizontal_mirror_check(TIME format = NS) noexcept;
+        static double vertical_mirror_convert(TIME format = NS) noexcept;
+        static double horizontal_mirror_convert(TIME format = NS) noexcept;
+
     private:
         static bool data_ready;
         static std::vector<RawCode> all_raw_codes;
diff --git a/src/klotski_core/ffi/tmain.cc b/src/klotski_core/ffi/tmain.cc
index 803c873..96a0c03 100644
--- a/src/klotski_core/ffi/tmain.cc
+++ b/src/klotski_core/ffi/tmain.cc
@@ -67,6 +67,15 @@ void tmain() {
     std::cout << "short code to common code fast: " <<
         Benchmark::short_code_to_common_code_fast() << "ns" << std::endl;
 
+    std::cout << "vertical mirror check: " <<
+        Benchmark::vertical_mirror_check() << "ns" << std::endl;
+    std::cout << "horizontal mirror check: " <<
+          Benchmark::horizontal_mirror_check() << "ns" << std::endl;
+    std::cout << "vertical mirror convert: " <<
+          Benchmark::vertical_mirror_convert() << "ns" << std::endl;
+    std::cout << "horizontal mirror convert: " <<
+          Benchmark::horizontal_mirror_convert() << "ns" << std::endl;
+
     return;
 
     std::vector<uint64_t> next;