diff --git a/index.js b/index.js
index 7553909..832ecb1 100644
--- a/index.js
+++ b/index.js
@@ -1,14 +1,22 @@
 const CROSS = 'X';
 const ZERO = 'O';
 const EMPTY = ' ';
-
 const container = document.getElementById('fieldWrapper');
 
+let field;
+let dimension;
+let movesLeft;
+let isGameOver;
+
 startGame();
 addResetListener();
 
 function startGame () {
-    renderGrid(3);
+    dimension = prompt("Укажите размер поля");
+    movesLeft = dimension**2;
+    field = [];
+    isGameOver = false;
+    renderGrid(dimension);
 }
 
 function renderGrid (dimension) {
@@ -16,9 +24,11 @@ function renderGrid (dimension) {
 
     for (let i = 0; i < dimension; i++) {
         const row = document.createElement('tr');
+        field.push([]);
         for (let j = 0; j < dimension; j++) {
             const cell = document.createElement('td');
             cell.textContent = EMPTY;
+            field[i][j] = EMPTY;
             cell.addEventListener('click', () => cellClickHandler(i, j));
             row.appendChild(cell);
         }
@@ -27,13 +37,115 @@ function renderGrid (dimension) {
 }
 
 function cellClickHandler (row, col) {
-    // Пиши код тут
+    if (isGameOver){
+        return;
+    }
+    if (findCell(row, col).textContent === EMPTY){
+        if (movesLeft % 2 == 0){
+            makeMove(CROSS, row, col);
+        }
+        else{
+            makeMove(ZERO, row, col);
+        }
+    }
     console.log(`Clicked on cell: ${row}, ${col}`);
+}
+
+function makeMove(symbol, row, col){
+    renderSymbolInCell(symbol, row, col);
+    field[row][col] = symbol;
+    movesLeft--;
+    if (checkWinner(symbol, row, col)){
+        switch (symbol){
+            case CROSS:
+                alert('Победили крестики!');
+                break;
+            case ZERO:
+                alert('Победили нолики!');
+                break;
+        }
+        isGameOver = true;
+    }
+    if (movesLeft === 0 && !isGameOver)
+        alert('Победила дружба!');
+}
+
+
+function checkWinner (symbol, row, col) {
+    let winFound = true;
+    let winLine;
+    for (let i = 0; i < dimension; i++) {
+        if (field[row][i] !== symbol) {
+            winFound = false;
+            break;
+        }
+        winFound = true;
+    }
+    winLine = "vertical";
+
+    if (!winFound) {
+        for (let i = 0; i < dimension; i++) {
+            if (field[i][col] !== symbol) {
+                winFound = false;
+                break;
+            }
+            winFound = true;
+        }
+        winLine = "horizontal";
+    }
+
+    if (!winFound) {
+        for (let i = 0; i < dimension; i++) {
+            if (field[i][i] !== symbol) {
+                winFound = false;
+                break;
+            }
+            winFound = true;
+        }
+        winLine = "diagonal";
+    }
 
+    if (!winFound) {
+        for (let i = 0; i < dimension; i++) {
+            if (field[i][dimension - (1 + i)] !== symbol) {
+                winFound = false;
+                break;
+            }
+            winFound = true;
+        }
+        winLine = "anti-diagonal";
+    }
+
+    if (winFound)
+        colorWinningLine(winLine, row, col);
+    return winFound;
+}
+
+function colorWinningLine(winLine, row, col){
+    for (let i = 0; i < dimension; i++) {
+        switch (winLine) {
+            case "vertical":
+                changeColor(findCell(row, i));
+                break;
+
+            case "horizontal":
+                changeColor(findCell(i, col));
+                break;
+
+            case "diagonal":
+                changeColor(findCell(i, i));
+                break;
+
+            case "anti-diagonal":
+                changeColor(findCell(i, dimension - (i + 1)));
+                break;
+        }
+    }
+}
 
-    /* Пользоваться методом для размещения символа в клетке так:
-        renderSymbolInCell(ZERO, row, col);
-     */
+function changeColor(cell){
+    cell.style.backgroundColor = '#b43030';
+    cell.style.color = 'white';
 }
 
 function renderSymbolInCell (symbol, row, col, color = '#333') {
@@ -55,6 +167,7 @@ function addResetListener () {
 
 function resetClickHandler () {
     console.log('reset!');
+    startGame();
 }