Sums instead of words
Kakuro looks like a crossword, but you fill it with the digits 1 to 9. Each black square with a diagonal holds a clue: the number above the line is the sum of the white squares to the right, the number below the line is the sum of the squares underneath. Within one run, no digit may repeat.
Every puzzle here is newly generated and checked to have exactly one solution, so you can solve it by logic alone. The combination helper shows which digits can make each sum – for example, 3 in two squares must be 1 + 2.
How to use
- Tap a white square to select it.
- Type a digit (or use the keypad); arrow keys move around.
- Use the combination helper to narrow down digits.
- Fill the whole grid correctly to win.
Ideas for using it
- Easy start. 3 in two squares = 1 + 2; 17 in two = 8 + 9.
- Three squares. 6 = 1 + 2 + 3; 24 = 7 + 8 + 9.
- Tip. look where an across and a down run share only one possible digit.
- Warm-up. small 5 × 5 puzzles take a few minutes.