Daily KenKen

How To Play

1. The numbers you can use in a puzzle depend on the size of the grid. If it’s a 4 x 4 grid, you’ll use the numbers 1–4. In a 6 x 6 grid, use numbers 1–6.

2. The heavily-outlined groups of squares in each grid are called “cages.” In the upper-left corner of each cage, there is a “target number” and a math operation (+, –, x, ÷).

3. Fill in each square of a cage with a number. The numbers in a cage must combine—in any order, using only that cage’s math operation—to form that cage’s target number. Example: Your target number is 5, your operation is addition, you’re using the numbers 1–4, and the cage is made up of two squares. You could fill in 2 and 3 (because 2 + 3 = 5) or 1 and 4 (1 + 4 = 5). But which number goes in which square? Read the next instruction!

4. Important: You may not repeat a number in any row or column. You can repeat a number within a cage, as long as those repeated numbers are not in the same row or column.

5. There is only one solution to each KENKEN puzzle. As long as you follow the rules above, you’ll know you got it right!

1. To start, click on any square. A "number ring" appears with that grid's possible numbers.

2. Ready to fill a number in that square? Just click the one you want in the number ring or select the number from your keyboard. It will then appear in the middle of the square.

3. Narrowed it down to a couple of numbers but still not totally sure? Click the numbers you want from the Notes section or enter a number from your keyboard while pressing the "SHIFT" key. They'll show up smaller in the square.

4. When you've ruled out one of your notes, click on it again in the Notes section or enter that number from your keyboard while pressing the "SHIFT" key. The number will disappear from the square.

5. When you fill in a number in a square (by selecting from the number ring or keyboard), any notes in that square will disappear.

6. Changed your mind about a number? In the number ring, click the eraser icon to clear the square.

7. To hide the number ring, click the "X."

8. Stuck? The Reveal button will correctly fill in one random empty square.