# 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:

Each region must contain one even and one odd number.

Single cells at the left and right side form a region.

Each rank must contain one of each number.

## Other Names

Brick Sudoku; Bricks; Sudoku-Mauer

## Playable Online