Win condition checking in LLD - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to check if a player has won by filling the blank.

LLD

if board[row][col] == [1]:
    return True

Drag options to blanks, or click blank then click option'

Aplayer_symbol

Bempty_cell

Copponent_symbol

DNone

Attempts:

3 left

💡 Hint

Common Mistakes

Using empty_cell instead of player_symbol

Checking for opponent_symbol instead of player_symbol

The win condition checks if the current cell matches the player's symbol.

2fill in blank

medium

Complete the code to count consecutive symbols in a row.

LLD

count = 0
for c in range(len(board[0])):
    if board[row][c] == [1]:
        count += 1

Drag options to blanks, or click blank then click option'

Aempty_cell

Bplayer_symbol

Copponent_symbol

DNone

Attempts:

3 left

💡 Hint

Common Mistakes

Counting empty cells instead of player symbols

Counting opponent symbols by mistake

We count cells matching the player's symbol to check for a win in the row.

3fill in blank

hard

Fix the error in the diagonal win check by filling the blank.

LLD

for i in range(size):
    if board[i][i] != [1]:
        return False
return True

Drag options to blanks, or click blank then click option'

Aempty_cell

Bopponent_symbol

CNone

Dplayer_symbol

Attempts:

3 left

💡 Hint

Common Mistakes

Checking for empty cells instead of player symbols

Checking for opponent symbols

The diagonal must have all cells matching the player's symbol to win.

4fill in blank

hard

Fill both blanks to check vertical win condition correctly.

LLD

for r in range(size):
    if board[r][col] != [1]:
        return False
return [2]

Drag options to blanks, or click blank then click option'

Aplayer_symbol

BTrue

CFalse

Dempty_cell

Attempts:

3 left

💡 Hint

Common Mistakes

Returning False instead of True after the loop

Checking for empty cells instead of player symbols

Check each cell in the column for the player's symbol; if all match, return True.

5fill in blank

hard

Fill all three blanks to complete the function that checks horizontal, vertical, and diagonal wins.

LLD

def check_win(board, player):
    size = len(board)
    for i in range(size):
        if all(board[i][j] == [1] for j in range(size)):
            return [2]
        if all(board[j][i] == [1] for j in range(size)):
            return [2]
    if all(board[i][i] == [1] for i in range(size)):
        return [2]
    if all(board[i][size - 1 - i] == [1] for i in range(size)):
        return [2]
    return [3]

Drag options to blanks, or click blank then click option'

Aplayer

BTrue

CFalse

DNone

Attempts:

3 left

💡 Hint

Common Mistakes

Returning None instead of False when no win

Checking wrong symbols in conditions

The function checks all win conditions for the player symbol and returns True if any are met, otherwise False.