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Curious Cheetah

Ziegelmauer

Background

While based on the number square concept underlying Sudoku, the regions are all two-celled and wrap around the grid. As a result, the grid must have a side of an even length.

Puzzle and Goal

An unsolved puzzle consists of a square grid. Each region consists of two side-by-side cells, so the entire grid resembles rows of alternating bricks. Some cells contain number clues.
The goal is to fill in all cells of the grid.

Rules

The solved grid must satisfy the following conditions:

Other Names

Brick Sudoku; Bricks; Sudoku-Mauer

Playable Online