Printable Killer Sudoku, HardFree, with answers: 200 puzzles
Every column, every row and every bold 3×3 box holds each digit 1 to 9 once. So far it is the same as classic sudoku. Every puzzle is free and prints large on A4, with the answer on page 2.
Killer Sudoku EasyKiller Sudoku MediumKiller Sudoku HardKiller Sudoku Oni
1What Killer Sudoku Hard is like
Needs the Rule of 45 for a single row, column or box. No starting digits: solved with the cage sums alone.
2Today's puzzle (11/13, No.52)
Changes every day at 0:00 Japan time. Print it as it is.
Killer Sudoku Hard No.52puzzlelounge.app/nanpure
Every column, row and bold 3×3 box holds each digit 1 to 9 once. The number in a dotted cage is the sum of the digits inside. A digit cannot repeat within a cage.
See the answer
Answer to Killer Sudoku Hard No.52
3Killer Sudoku Hard: all 200 puzzles
Choose a number to print that puzzle. The same number is always the same puzzle.
?Questions
Is it really free?
Yes. No sign-up is needed, and every puzzle is free to print.
Are answers included?
When printed, page 2 is the answer. If you do not want the answer, choose page "1" only in your print settings. On screen you can check it with "See the answer".
Is there only one answer?
Yes. Every puzzle has one answer and has been checked to be solvable by logic alone, with no guessing.
Can I also solve on a phone?
Any puzzle can be solved in your browser from "Solve on phone or PC". Notes and hints that teach how to solve are available too. At this level the browser takes a ticket per puzzle (none needed with the Lounge Pass). Printing is free at every level.
What are the rules of Killer Sudoku?
As in classic sudoku, every column, row and 3×3 box holds 1 to 9 once each. On top of that, the number at the top left of a dotted cage is the sum of the digits inside it, and a digit cannot repeat within a cage.