Sudoku Quilts

by Dena Dale Crain

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What is Sudoku?

Latin squares,

expanded

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with some numbers missing,

so it’s your challenge to complete the puzzle.

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What are the rules?No number repeats in a row

No number repeats in a column

No number repeats in a 4-patch block in a 4-patch puzzle, or in a 9-patch block in a 9-patch puzzle

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How do you do it?Scan for cells that can hold only 1 certain number

Note all clue possibilities in each cell, then look for any cell that has only 1 possibility

Fill in the clue numbers that have only 2 or 3 incidences in each row, column or block

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4 x 4 Sudoku Quilts

Whirligig ,

a 4 x 4 Sudoku Quilt

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Only 2 kinds of blocks work:

Asymmetrical

With mirror imaging on the diagonal

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Let each position represent a number,

then solve the puzzle.

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Easy, right? OK, so it looks weird!

Hang on—there’s more coming . . .

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First, add color . . .

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Then, add mirror image symmetry.

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Four blocks = Four possible arrangements

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9 x 9 Sudoku Quilts

Colored puzzle

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Four up, and symmetrical secondary patterns appear

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Low value contrast

High value contrast

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Single row centers

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Stretch squares into rectangles to control

proportions

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Skew for fun . . .

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Four blocks, four possible arrangements

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Stretch for proportion control

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Two or more numbers the same color?

MODERN SUDOKU QUILTS!

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Want more help?FREE Sudoku Quilts Online Quilt Class

& FREE Whirligig Sudoku Quilt Pattern

at QuiltEd Online

FREE Sudoku Quilts eBook at Smashwords ©Dena Dale Crain, Nairobi, Kenya, 2015; All rights reserved

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