From WPC unofficial wiki


Place a digit in each empty cell such that every thickly outlined region of size N contains all digits from 1 to N. The same digits do not touch each other, even diagonally.

(Rules and example from WPC 2017 IB)

Minor variants[edit]

  • Suguru Diagonal: From WPC 2018/Round 2. Marked diagonal contains each of the numbers from 1 to the size of the grid.
  • Capsules: A different name for the puzzle; it sometimes refers to a specific version of Suguru where all regions have a size of 5 cells.
  • WPC 2016/Round 12 had a Capsules puzzle using 5 letters ("MINSK") instead of numbers.

History of the puzzle[edit]

Invented by Naoki Inaba (Japan) in 2001 under the name "ナンバーブロック" ("Number Block"). [1] The name "Suguru", a contraction of "Suji gurupu" ("Number group") is given by Puzzler Media Ltd (UK). According to them, the original name "did not sufficiently reflect the qualities of" the puzzle. [2]

Appearances in the past WPCs[edit]