Killer (sum) sudoku medium difficult

Sumdoku Puzzles Online

Our service invites you to relax and play your favorite game, Killer Sudoku (Sumdoku), absolutely for free. We offer 4 difficulty levels and 3 grid sizes. The current game features a 9x9 grid of medium difficulty. Users on our website typically spend approximately 20-40 minutes solving such a puzzle.

At the start, players are given 26 pre-filled cells. The user must fill in the remaining cells (55 in total) themselves. It is advisable not to rush, think logically, and make correct decisions. Successfully completing a Killer Sudoku medium difficulty level without errors can earn you a rating of 440 points.

How to Play Medium Difficulty Killer Sudoku Correctly:

1. Fill in all groups with 2 cells where there is already one digit.
2. Use the method of the only possible value for each digit from 1 to 9 one at a time.
3. Apply the method of the last unfilled cell in a row, column, or 3x3 square.
4. Examine groups and their sums; there may be a missing digit somewhere. Subtract each known number in the group from the sum, and the remainder will reveal the missing number.
5. Repeat steps 2 and 3 until the Killer Sudoku puzzle is solved.