![]() ![]() You can erase numbers you've entered by reselecting the square you want to edit, and using the keypad buttons to 'switch off' (erase) entered numbers. In this variation, the grid is empty and the numbers in the outside frame represent the sum of the first three numbers in the corresponding row or column in the given direction. The numbers outside the grid indicate the sum of all digits between the 8 and the 9 in that row or column. Frame Sudoku, also known as Outside Sum Sudoku, is a variation of the classic Sudoku puzzle that adds an extra layer of challenge. The bottom row allow you to enter numbers in pencil, to mark which numbers are still valid for that square. Author/Opus: This is the 173rd puzzle from our contributing puzzlemaster Prasanna Seshadri. How do you solve outside sudoku puzzles There are various strategies that can be used to solve these puzzles. The top row of buttons enter numbers in pen (indicating that they're part of the final answer). Tap on a grid square to select it, then use the keypad buttons below the grid to enter numbers. Additionally, the clues outside the grid indicate the sum of at least one pair of neighboring cells in that row or. ![]() Each cage contains a clue number in the corner of one of its squares: this number indicates the sum total of the numbers that should be entered in the cage's squares.Ī completed cage must not contain any single number more than once. Instead of prefilled squares acting as clues, the Killer Sudoku grid is divided into irregularly shaped sections (called 'cages'). Outside Sudoku is a variation of standard Sudoku. As with regular Sudoku, the objective of the puzzle is to fill the grid with the numbers 1-9 so that each row, column and nonet (3x3 group of squares*) contains each number exactly once.
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