1.Killer Sudoku is a popular variation of the classic Sudoku puzzle that combines standard Sudoku rules with an additional layer of complexity involving cages. In Killer Sudoku, numbers within outlined regions, called "cages," must sum to a specified value, and numbers cannot repeat within these cages or in rows, columns, and 3x3 subgrids.
Standard Sudoku Rules Apply:
Numbers 1-9 must appear exactly once in each row, column, and 3x3 subgrid.
Cages and Sums:
The grid is divided into "cages" (outlined regions), each with a target sum indicated in its top-left corner. The numbers within a cage must add up to that sum, and no number can be repeated within a single cage.
Solving Techniques:
Killer Sudoku often involves techniques beyond basic Sudoku, including mental arithmetic and logical deduction related to cage sums and number exclusions. The "45 rule" is a common technique, based on the sum of numbers 1-9 being 45.
Origins:
Killer Sudoku was established in Japan by the mid-1990s as "samunamupure," a Nipponized form of "sum number place," and introduced to the English-speaking world by The Times in 2005.
Difficulty:
While the name suggests a challenging puzzle, simpler Killer Sudokus can be easier than regular Sudokus, and the difficulty can vary significantly, with hard versions requiring considerable time and mental effort.
Standard Sudoku Rules Apply:
Numbers 1-9 must appear exactly once in each row, column, and 3x3 subgrid.
Cages and Sums:
The grid is divided into "cages" (outlined regions), each with a target sum indicated in its top-left corner. The numbers within a cage must add up to that sum, and no number can be repeated within a single cage.
Solving Techniques:
Killer Sudoku often involves techniques beyond basic Sudoku, including mental arithmetic and logical deduction related to cage sums and number exclusions. The "45 rule" is a common technique, based on the sum of numbers 1-9 being 45.
Origins:
Killer Sudoku was established in Japan by the mid-1990s as "samunamupure," a Nipponized form of "sum number place," and introduced to the English-speaking world by The Times in 2005.
Difficulty:
While the name suggests a challenging puzzle, simpler Killer Sudokus can be easier than regular Sudokus, and the difficulty can vary significantly, with hard versions requiring considerable time and mental effort.
1. -Simon: What are you playing?
-Ed: Killer Sudoku, I think its pretty fun!
I couldn’t find a killer sudoku gif, sorry.
-Ed: Killer Sudoku, I think its pretty fun!
I couldn’t find a killer sudoku gif, sorry.
by Malik Yakubov July 20, 2025
Get the Killer Sudokumug. The act of arranging geeks together for nerdy activities such as Dungeons and Dragons, Pathfinder, or MMO raids to figure out who is playing what when. Because this involves working around random schedules for the players and needing to get the right mix of their characters it often resembles a game of Sudoku to get all of the people in place.
The game started late because the geek Sudoku took almost an hour to get everyone into a game they could play
by BigNorseWolf December 13, 2015
Get the Geek sudokumug. Sudoku is an online meme terminology that refers to the Japanese ritual suicide by disembowelment with a short sword. People purposely say Sudoku and not the actual term is Seppuku online as a meme since the actual Sudoku is a 9x9 digit puzzle.
Person 1:I'm kind of feeling depressed after this. I think ima perform Sudoku.
Person 2: Do you mean Seppuku?
Person 1:No it's Sudoku
Person 2: Do you mean Seppuku?
Person 1:No it's Sudoku
by DLfromNY February 29, 2020
Get the Sudokumug. (Internet slang, humorous) To commit seppuku or hara-kiri. (by extension) To commit suicide by any means.
What is Kermit Sudoku? Kermit sudoku is a joke about committing suicide.
What is Kermit Sudoku? Kermit sudoku is a joke about committing suicide.
My game froze again, dude.. I'm about to just kermit sudoku.
If I hear one more K-Pop song.... I will kermit sudoku.
If I hear one more K-Pop song.... I will kermit sudoku.
by DXXTHLY January 23, 2024
Get the Kermit Sudokumug. by bocbi November 20, 2018
Get the Sudokumug. by Melonz123 January 28, 2020
Get the Sudokumug.