Strimko is a logic number puzzle invented in 2008 by the Grabarchuk family. Like Sudoku and KenKen, Strimko asks the puzzle-solver to complete a Latin square under certain constraints.
A Strimko puzzle consists of an NÃÂN grid of cells, partitioned into N regions of N cells each; these regions are called "streams." The solver's goal is to fill each cell with a number from 1 to N, such that no row contains the same number twice; no column contains the same number twice; and no stream contains the same number twice.
Every Sudoku puzzle is a valid Strimko puzzle; a Sudoku is simply a Strimko in which the "streams" correspond to the nine subgrids. Puzzles equivalent to Strimko are often published under the name "Jigsaw Sudoku"; this name appears in print as early as 2008.
Strimko challenges were handcrafted by Helen, Tanya, and Peter Grabarchuk, and hundreds of original Strimko puzzles were published in various forms and platforms: Web, iOS, PC/Mac, Kindle, paperback.
The game received positive reviews from GameZebo (3.5/5), Jay Is Games (4/5) and Softpedia (4.8/5).