Test your logic and problem-solving skills
Fill the 9×9 grid with digits so that each column, each row, and each of the nine 3×3 subgrids contains all of the digits from 1 to 9. Click on a cell and then click a number button to fill it.
Use the clues to determine which items belong together. Click on cells to mark them with an X (false) or a checkmark (true). Each row and column should have exactly one checkmark.
Identify the pattern in the sequence and select the correct item to continue it. Click on one of the options at the bottom to make your choice.
Move all disks from the first tower to the third tower. You can only move one disk at a time, and a larger disk cannot be placed on top of a smaller disk. Click on a disk to select it, then click on a tower to move it there.
Try to guess the secret code. After each guess, you'll get feedback: black pegs for correct color in correct position, white pegs for correct color in wrong position. You have 10 attempts to crack the code.
Click on cards to flip them and reveal symbols. Match all pairs of identical symbols to win the game. Try to remember the position of each card to make matches with fewer flips.
Transform the start word into the end word by changing one letter at a time. Each intermediate word must be a valid English word. Type your word in the input field and submit to check if it's valid.
Use the clues to determine the correct arrangement of items. Click on cells to select them, then click on an option to place it there. Each row and column should contain each item exactly once.