diff --git a/lab1/src/algo/mod.rs b/lab1/src/algo/mod.rs
index 2b657db..7b2b4da 100644
--- a/lab1/src/algo/mod.rs
+++ b/lab1/src/algo/mod.rs
@@ -2,4 +2,6 @@ mod board;
 mod misc;
 mod simulation;
 
-pub(crate) use board::Board;
\ No newline at end of file
+pub(crate) use board::Board;
+pub(crate) use simulation::AnnealingConfig;
+pub(crate) use simulation::simulateAnnealing;
\ No newline at end of file
diff --git a/lab1/src/algo/simulation.rs b/lab1/src/algo/simulation.rs
index 102f259..4ca146f 100644
--- a/lab1/src/algo/simulation.rs
+++ b/lab1/src/algo/simulation.rs
@@ -2,7 +2,7 @@ use crate::algo::misc::{initializeBoard, isOnDiagonal, swapRandomQueensOnce};
 use crate::algo::Board;
 use eframe::emath::Numeric;
 
-pub(super) fn calculateEnergy(b: &Board) -> f64 {
+fn calculateEnergy(b: &Board) -> f64 {
     let mut conflictsCount = 0usize;
     for i1 in 0..b.len() {
         for i2 in (i1 + 1)..b.len() {
diff --git a/lab1/src/main.rs b/lab1/src/main.rs
index e2e9b4a..9e6fe38 100644
--- a/lab1/src/main.rs
+++ b/lab1/src/main.rs
@@ -3,6 +3,150 @@
 
 mod algo;
 
-fn main() {
+use eframe::egui;
+use eframe::egui::Ui;
+use eframe::emath::Numeric;
+use rand::SeedableRng;
+use std::ops::RangeInclusive;
+use std::time::{SystemTime, UNIX_EPOCH};
 
-}
\ No newline at end of file
+fn main() -> eframe::Result {
+    let options = eframe::NativeOptions {
+        viewport: egui::ViewportBuilder::default().with_inner_size([640.0, 400.0]),
+        ..Default::default()
+    };
+    eframe::run_native(
+        "Annealing Simulation for Chess Queens Task",
+        options,
+        Box::new(|cc| {
+            // This gives us image support:
+            // egui_extras::install_image_loaders(&cc.egui_ctx);
+
+            Ok(Box::<MyApp>::default())
+        }),
+    )
+}
+
+struct MyApp {
+    simulationConfig: algo::AnnealingConfig,
+    boardSize: usize,
+    _isFirstFrame: bool,
+    result: Option<algo::Board>,
+}
+
+impl Default for MyApp {
+    fn default() -> Self {
+        Self {
+            simulationConfig: algo::AnnealingConfig {
+                initialTemperature: 30.0,
+                targetTemperature: 0.5,
+                cooldownCoefficient: 0.99,
+                iterationsPerAge: 100,
+            },
+            boardSize: 20,
+            _isFirstFrame: true,
+            result: None,
+        }
+    }
+}
+
+fn _slider<T: Numeric>(
+    ui: &mut Ui,
+    name: &str,
+    storage: &mut T,
+    range: RangeInclusive<T>,
+    step: f64,
+) {
+    let label = ui.label(name);
+
+    ui.scope(|ui| {
+        ui.spacing_mut().slider_width = ui.available_width()
+            - ui.spacing().interact_size.x
+            - ui.spacing().button_padding.x * 2.0;
+        ui.add(egui::Slider::new(storage, range).step_by(step))
+            .labelled_by(label.id);
+    });
+}
+
+impl eframe::App for MyApp {
+    fn update(&mut self, ui: &eframe::egui::Context, _frame: &mut eframe::Frame) {
+        egui::CentralPanel::default().show(ui, |ui| {
+            ui.add_enabled_ui(matches!(self.result, None), |ui| {
+                _slider(ui, "Board size:", &mut self.boardSize, 2..=50, 1.0);
+                ui.label("");
+
+                _slider(
+                    ui,
+                    "Initial temperature:",
+                    &mut self.simulationConfig.initialTemperature,
+                    self.simulationConfig.targetTemperature + 0.01..=100.0,
+                    0.01,
+                );
+                ui.label("");
+                _slider(
+                    ui,
+                    "Target Temperature:",
+                    &mut self.simulationConfig.targetTemperature,
+                    0.0..=99.98,
+                    0.01,
+                );
+                ui.label("");
+                _slider(
+                    ui,
+                    "Cooldown coefficient:",
+                    &mut self.simulationConfig.cooldownCoefficient,
+                    0.001..=0.999,
+                    0.001,
+                );
+                ui.label("");
+
+                _slider(
+                    ui,
+                    "Iterations per age:",
+                    &mut self.simulationConfig.iterationsPerAge,
+                    1..=1000,
+                    1.0,
+                );
+
+                ui.label("");
+                if ui.button("Calculate").clicked() {
+                    self.result = Some(algo::simulateAnnealing(
+                        self.boardSize,
+                        &self.simulationConfig,
+                        &mut rand::rngs::SmallRng::seed_from_u64(
+                            SystemTime::now()
+                                .duration_since(UNIX_EPOCH)
+                                .unwrap()
+                                .as_secs(),
+                        ),
+                    ))
+                }
+            });
+
+            match &self.result {
+                None => {}
+                Some(result) => ui.ctx().show_viewport_immediate(
+                    egui::ViewportId::from_hash_of("immediate_viewport"),
+                    egui::ViewportBuilder::default()
+                        .with_title("Immediate Viewport")
+                        .with_inner_size([200.0, 100.0]),
+                    |ui, class| {
+                        if class == egui::ViewportClass::Embedded {
+                            /*ui.label(
+                                "This viewport is embedded in the parent window, and cannot be moved outside of it.",
+                            );*/
+                        } else {
+                            egui::CentralPanel::default().show(ui, |ui| {
+                                ui.label("Hello from immediate viewport");
+
+                                if ui.input(|i| i.viewport().close_requested()) {
+                                    self.result = None
+                                }
+                            });
+                        }
+                    },
+                ),
+            }
+        });
+    }
+}