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Strimko facts for kids

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Developer(s) Puzzlium Inc., Quokka Studios Pty Ltd, Braintonik, Grabarchuk Puzzles
Publisher(s) Puzzlium Inc., Quokka Studios Pty Ltd, Braintonik, Grabarchuk Puzzles
Platform(s) Paperback, iOS, Kindle, Windows, Mac OS X, Web
Release date(s) Paperback/Kindle Book
October 2017
Kindle Game
November 2011
PC/Mac Game
February 2010
iOS App
September 2009
Web Game
January 2008
Genre(s) Puzzle
Mode(s) Single player

Strimko™ is a logic number puzzle invented by The Grabarchuk Family in 2008. It is based on the idea of Latin squares described by a Swiss mathematician and physicist Leonhard Euler (1707-1783) in the 18th century.

All Strimko puzzles are solvable with a pure logic; no special knowledge is required. Strimko uses only three basic elements: rows, columns, and streams. All elements have equal numbers of cells, and the goal is to make each row, column, and stream containing the whole set of specified numbers. Cells in the grid are organized into several streams of equal length, which often run diagonally and even branching. Such mechanics creates entangled patterns resulting in interesting challenges and unusual logic.

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 goal of the game is to fully fill in the given grid (3x3, 4x4, 5x5 ...) with missing numbers observing three simple rules.

Rule #1 Each row must contain different numbers.

Rule #2 Each column must contain different numbers.

Rule #3 Each stream must contain different numbers.

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