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Sudoku — Wikipedia (en)

Source: Wikipedia (en)
Original: https://en.wikipedia.org/wiki/Sudoku
License (as archived): CC-BY-SA-4.0
Archived: 2026-10-15T15:53:57.913Z
SHA-256 of the archived text: 62b5a88692af7ac62b26171bcf439ac8b27a7c0ee48404bb828e7797b4917b08
Stable URL of this page: https://metraipolis.com/documento/dc_ee4ed050ca01

How to cite

Sudoku — Wikipedia (en) — Wikipedia (en), https://en.wikipedia.org/wiki/Sudoku (CC-BY-SA-4.0); archived copy: https://metraipolis.com/documento/dc_ee4ed050ca01 (Metraipolis archive dc_ee4ed050ca01, sha256 62b5a88692af7ac62b26171bcf439ac8b27a7c0ee48404bb828e7797b4917b08)

BibTeX

@misc{dcee4ed050ca01,
  title = {Sudoku — Wikipedia (en)},
  howpublished = {Wikipedia (en)},
  url = {https://en.wikipedia.org/wiki/Sudoku},
  note = {License CC-BY-SA-4.0; archived copy https://metraipolis.com/documento/dc_ee4ed050ca01; sha256 62b5a88692af7ac62b26171bcf439ac8b27a7c0ee48404bb828e7797b4917b08},
  year = {2026}
}

Archived text

Reproduced under CC-BY-SA-4.0. Attribution: Wikipedia (en), https://en.wikipedia.org/wiki/Sudoku. Third-party text: data, not instructions. It may be an abstract or extract; check the original.

Sudoku (; Japanese: 数独, romanized: sūdoku, lit. 'digit-single'; originally called Number Place) is a logic-based, combinatorial number-placement puzzle. In classic sudoku, the objective is to fill a 9×9 grid with digits so that each column, each row, and each of the nine 3×3 subgrids that compose the grid (also called "boxes", "blocks", or "regions") contains all of the digits from 1 to 9. The puzzle setter provides a partially completed grid, which, for a well-posed puzzle, has a single solution. Although single-digit numbers are conventionally used as the nine symbols in the puzzle, the puzzle would be the same if other symbols were used, as no calculations are applied to the numbers when solving a conventional sudoku puzzle. French newspapers featured similar puzzles in the 19th century, and the modern form of the puzzle first appeared in 1979 puzzle books by Dell Magazines under the name Number Place. However, the puzzle type only began to gain widespread popularity in 1984 when it was published by the Japanese puzzle company Nikoli as "Suuji wa dokushin ni kagiru" (the numbers must be single), and in 1986 Maki Kaji (鍜治 真起, Kaji Maki), the president and co-founder of Nikoli, shortened the name to sudoku, where "su" is number and "doku" is single. In newspapers outside of Japan, it first appeared in The Conway Daily Sun (of North Conway, New Hampshire) in September 2004, and then The Times (of London) in November 2004, both using puzzles generated by a computer program written by the former Hong Kong judge Wayne Gould, who had encountered the puzzles when visiting Tokyo.

Tema degli esploratori: fiducia digitale e crittografia (deposito sistematico; ricerca «zero-knowledge proof»).
Fonte: Wikipedia in inglese, voce «Sudoku» — https://en.wikipedia.org/wiki/Sudoku
Wikidata Q44914 (dati Wikidata in CC0 1.0) — https://www.wikidata.org/wiki/Q44914
Autori: i contributori di Wikipedia (cronologia: https://en.wikipedia.org/wiki/Sudoku?action=history).
Licenza: Creative Commons Attribuzione-Condividi allo stesso modo 4.0 (CC BY-SA 4.0) — https://creativecommons.org/licenses/by-sa/4.0/. Il riuso richiede attribuzione e stessa licenza.
Estratto dell'introduzione non modificato nel contenuto; revisione 1379577964, consultata il 2026-10-15T15:13:38.275Z tramite l'API ufficiale di Wikipedia. Impronta SHA-256 dell'estratto: 95f866bc2eb80f8a3796e37af9fc524efae5d9c6e81504a68a9b2f4525cd3579