Sudoku Killer puzzle Hard level

Features of Difficult Killer Sudoku

On the game field at the start, you can see only 10 filled cells. Each cell is part of a digit group, and the sum of digits in the group is displayed in the top left corner of the group (all groups are outlined with dotted lines). In total, there are 30 groups on the field.

Considering that there are 81 empty spaces on the field, during the game, you need to fill in 71 empty cells, and this is indeed challenging. Adding to the complexity is the fact that each digit appears on the game board no more than 2 times.

For each correct move, the player earns 12 points. For each mistake, there are penalty sanctions of 8 points. Register on our website and save your results. Test your skills in competitions among Killer Sudoku enthusiasts.

How to play Killer Sudoku correctly?

1. Start with groups containing 2 digits. It's easy to make assumptions there.
2. Try not to guess; rely on your logic and experience.
3. Use various Sudoku-solving methods.
4. Progress evenly across the field; don't scatter your focus immediately.
5. Aim to make a minimum number of mistakes.