diff --git a/index.js b/index.js
index 7553909..5febb50 100644
--- a/index.js
+++ b/index.js
@@ -4,19 +4,39 @@ const EMPTY = ' ';
 
 const container = document.getElementById('fieldWrapper');
 
+let currentPlayer;
+let currentTurn;
+let field;
+let maxTurns;
+let dimension;
+let winCombination;
+let isGameOver;
+
+getDimensionCount();
 startGame();
 addResetListener();
 
 function startGame () {
-    renderGrid(3);
+    isGameOver = false;
+    maxTurns = dimension ** 2;
+    field = [];
+    renderGrid(dimension);
+    currentPlayer = CROSS;
+    currentTurn = 1;
+}
+
+function getDimensionCount() {
+    dimension = parseInt(prompt('Введите количество измерений', '3'));
 }
 
 function renderGrid (dimension) {
     container.innerHTML = '';
 
     for (let i = 0; i < dimension; i++) {
+        field[i] = [];
         const row = document.createElement('tr');
         for (let j = 0; j < dimension; j++) {
+            field[i][j] = EMPTY;
             const cell = document.createElement('td');
             cell.textContent = EMPTY;
             cell.addEventListener('click', () => cellClickHandler(i, j));
@@ -27,17 +47,113 @@ function renderGrid (dimension) {
 }
 
 function cellClickHandler (row, col) {
-    // Пиши код тут
-    console.log(`Clicked on cell: ${row}, ${col}`);
+    if (field[row][col] != EMPTY || isGameOver) {
+        return;
+    }
+    cellClick(row, col);
+    botTurn();
+}
+
+function cellClick (row, col) {
+    if (field[row][col] != EMPTY || isGameOver) {
+        return;
+    }
+    renderSymbolInCell(currentPlayer, row, col);
+    checkWinner(currentPlayer, row, col);
+    currentTurn++;
+    currentPlayer = (currentPlayer == CROSS) ? ZERO : CROSS;
+}
+
+function checkWinner(player, row, col) {
+    if (currentTurn < dimension * 2 - 1) return;
+    if (isWinCombination(rowWinnerCombination(player, row)) 
+    || isWinCombination(colWinnerCombination(player, col)) 
+    || isWinCombination(mainDiagWinnerCombination(player)) 
+    || isWinCombination(secondDiagWinnerCombination(player))) {
+        alertWinner(player);
+    }
+    if (currentTurn == maxTurns){
+        alert('Победила дружба!');
+        isGameOver = true;
+        return;
+    }
+}
 
+function isWinCombination(combination) {
+    if (combination.length == dimension) {
+        winCombination = combination;
+        return true;
+    }
+    return false;
+}
 
-    /* Пользоваться методом для размещения символа в клетке так:
-        renderSymbolInCell(ZERO, row, col);
-     */
+function mainDiagWinnerCombination(player) {
+    combination = [];
+    for (let i = 0; i < dimension; i++){
+        if (field[i][i] == player){
+            combination.push([i, i]);
+        }
+        else return [];
+    }
+    return combination;
+}
+
+function secondDiagWinnerCombination(player) {
+    combination = [];
+    for (let i = 0; i < dimension; i++){
+        if (field[dimension - 1 - i][i] == player){
+            combination.push([dimension - 1 - i, i]);
+        }
+        else return [];
+    }
+    return combination;
+}
+
+function rowWinnerCombination(player, row) {
+    combination = [];
+    for (let i = 0; i < dimension; i++){
+        if (field[row][i] == player){
+            combination.push([row, i]);
+        }
+        else return [];
+    }
+    return combination;
+}
+
+function colWinnerCombination(player, col) {
+    combination = [];
+    for (let i = 0; i < dimension; i++){
+        if (field[i][col] == player){
+            combination.push([i, col]);
+        }
+        else return [];
+    }
+    return combination;
+}
+
+function alertWinner(player) {
+    switch(player) {
+        case CROSS:
+            alert('Победили крестики!');
+            break;
+        case ZERO:
+            alert('Победили нолики!');
+            break;
+    }
+    isGameOver = true;
+    colorWinner(winCombination);
+}
+
+function colorWinner(winComb) {
+    winComb.forEach(winCell => {
+        const cell = findCell(winCell[0], winCell[1]);
+        cell.style.backgroundColor = "red";
+    });
 }
 
 function renderSymbolInCell (symbol, row, col, color = '#333') {
     const targetCell = findCell(row, col);
+    field[row][col] = symbol;
 
     targetCell.textContent = symbol;
     targetCell.style.color = color;
@@ -54,9 +170,19 @@ function addResetListener () {
 }
 
 function resetClickHandler () {
-    console.log('reset!');
+    startGame();
 }
 
+function botTurn() {
+    while(!isGameOver){
+        x = Math.floor(Math.random() * dimension);
+        y = Math.floor(Math.random() * dimension);
+        if (field[x][y] == EMPTY) {
+            cellClick(x, y);
+            break;
+        }
+    }
+}
 
 /* Test Function */
 /* Победа первого игрока */