Kakuro puzzles resemble crosswords which use numbers instead of words. The aim of the game is to fill all the blank squares in the grid with only the numbers 1-9 so that the numbers you enter add up to the corresponding clues. When the grid is filled, the puzzle is complete. A number may not appear more than once per sum. Use the cursor keys to quickly move through the cells. Backspace/Delete clears a cell. Using the on-screen numpad (or keyboard numbers 1 to 9) you can enter candidates. Selecting a number a second time changes the candidate to your final number. You can click on the clues to get help with the possible combinations for that specific clue.