diff --git a/index.js b/index.js
index 7553909..e458c2e 100644
--- a/index.js
+++ b/index.js
@@ -2,18 +2,39 @@ const CROSS = 'X';
 const ZERO = 'O';
 const EMPTY = ' ';
 
+let isGameOver;
+let maxCounOfTurns;
+let lastSymbol = "";
+let counOfTurns;
+let winner;
+let dim = 3;
+let winCombination;
+
+const winTypes = {
+    horizontal: 'horizontal',
+    vertical: 'vertical',
+    diagonalLeft: 'diagonalLeft',
+    diagonalRight: 'diagonalRight'
+}
+
 const container = document.getElementById('fieldWrapper');
 
 startGame();
 addResetListener();
 
 function startGame () {
-    renderGrid(3);
+    //dim = prompt("Задайте размер поля:", 3);
+    lastSymbol = "";
+    winCombination = [];
+    counOfTurns = 0;
+    maxCounOfTurns = dim**2;
+    isGameOver = false;
+    renderGrid(dim);
 }
 
 function renderGrid (dimension) {
     container.innerHTML = '';
-
+    dim = dimension;
     for (let i = 0; i < dimension; i++) {
         const row = document.createElement('tr');
         for (let j = 0; j < dimension; j++) {
@@ -27,13 +48,48 @@ function renderGrid (dimension) {
 }
 
 function cellClickHandler (row, col) {
-    // Пиши код тут
-    console.log(`Clicked on cell: ${row}, ${col}`);
 
+    if (isGameOver || findCell(row, col).textContent !== EMPTY) return;
+
+    //console.log(`Clicked on cell: ${row}, ${col}`);
+    //console.log(`maxCounOfTurns = ${maxCounOfTurns}`);
+    //console.log(`dim = ${dim}`);
+    //console.log(`winner = ${winner}`);
+    //console.log(`isGameOver =  ${isGameOver}`);
+    //console.log(`winCombination =  ${winCombination}`);
+
+    let symbol = "";
+
+    if(lastSymbol != ZERO)
+        symbol = ZERO;
+    else
+        symbol = CROSS;
+
+    lastSymbol = symbol;
+
+    if(findCell(row, col).textContent === EMPTY)
+        renderSymbolInCell(symbol, row, col);
+
+    checkWinner(symbol, row, col);  
+
+    counOfTurns++;  
+
+    if (counOfTurns === maxCounOfTurns && !winner) 
+        isGameOver = true;
+
+    else if (!winner) return;
 
-    /* Пользоваться методом для размещения символа в клетке так:
-        renderSymbolInCell(ZERO, row, col);
-     */
+    colorWinningLine();
+    winnerAlert();
+}
+
+function colorWinningLine() {
+    for (let i = 0; i < winCombination.length; i++) {
+        let row = winCombination[i][0];
+        let col = winCombination[i][1];
+        const targetCell = findCell(row, col);
+        targetCell.style.backgroundColor = "red";
+    }
 }
 
 function renderSymbolInCell (symbol, row, col, color = '#333') {
@@ -54,34 +110,75 @@ function addResetListener () {
 }
 
 function resetClickHandler () {
+    startGame();
     console.log('reset!');
 }
 
+function checkWinner(symbol, row, col) {
+    if ((col === 0 || findCell(row, col - 1).textContent === symbol) &&
+        (col === dim - 1 || findCell(row, col + 1).textContent === symbol))
+        winCombination = getWinningCombo(winTypes.horizontal, symbol, row, col);
+
+    if ((row === 0 || findCell(row - 1, col).textContent === symbol) &&
+        (row === dim - 1 || findCell(row + 1, col).textContent === symbol))
+        winCombination = getWinningCombo(winTypes.vertical, symbol, row, col);
+
+    if (row === col &&
+        (row === 0 || findCell(row - 1, col - 1).textContent === symbol) &&
+        (row === dim - 1 || findCell(row + 1, col + 1).textContent === symbol))
+        winCombination = getWinningCombo(winTypes.diagonalLeft, symbol, row, col);
+
+    if (dim - 1 - row === col &&
+        (row === 0 || findCell(row - 1, col + 1).textContent === symbol) &&
+        (col === 0 || findCell(row + 1, col - 1).textContent === symbol))
+        winCombination = getWinningCombo(winTypes.diagonalRight, symbol, row, col);
 
-/* Test Function */
-/* Победа первого игрока */
-function testWin () {
-    clickOnCell(0, 2);
-    clickOnCell(0, 0);
-    clickOnCell(2, 0);
-    clickOnCell(1, 1);
-    clickOnCell(2, 2);
-    clickOnCell(1, 2);
-    clickOnCell(2, 1);
+    if (winCombination.length === dim) {
+        isGameOver = true;
+        winner = symbol;
+    }
+}
+
+function winnerAlert() {
+    if (!isGameOver) return;
+    switch (winner) {
+        case CROSS:
+            alert('Победили крестики!');
+            break;
+        case ZERO:
+            alert('Победили нолики!');
+            break;
+        default:
+            alert('Победила дружба!');
+            break;
+    }
 }
 
-/* Ничья */
-function testDraw () {
-    clickOnCell(2, 0);
-    clickOnCell(1, 0);
-    clickOnCell(1, 1);
-    clickOnCell(0, 0);
-    clickOnCell(1, 2);
-    clickOnCell(1, 2);
-    clickOnCell(0, 2);
-    clickOnCell(0, 1);
-    clickOnCell(2, 1);
-    clickOnCell(2, 2);
+function getWinningCombo(winType, symbol, row, col) {
+    let combination = []
+    for (let i = 0; i < dim; i++) {
+        switch (winType) {
+            case winTypes.vertical:
+                if (findCell(i, col).textContent === symbol)
+                    combination.push([i, col]);
+                break;
+            case winTypes.horizontal:
+                if (findCell(row, i).textContent === symbol)
+                    combination.push([row, i]);
+                break;
+            case winTypes.diagonalLeft:
+                if (findCell(i, i).textContent === symbol)
+                    combination.push([i, i]);
+                break;
+            case winTypes.diagonalRight:
+                if (findCell(dim - 1 - i, i).textContent === symbol)
+                    combination.push([dim - 1 - i, i])
+                break;
+        }
+    }
+    if (combination.length === dim)
+        return combination;
+    return [];
 }
 
 function clickOnCell (row, col) {