#latin square

[mathhombre]

Lee Sallows Stair Square

Via the Futility Closet.

[quadratablog]

Here are three different puzzles, all of which involve sums together with the number of odds or evens in adjacent cells.  Each uses a different variation on this theme to determine a puzzle with a unique solution.  For higher quality version visit Quadrata at: https://quadratablog.blogspot.com/2018/07/three-small-sum-puzzles.html

[mathhombre]

Room Squares

John D Cook writes about these cousins to Latin squares. Each room is empty, or has two symbols. Each symbol appears once in each row and column. It's a round robin tournament! One thing I'm wondering is what a Swiss tournament looks like in this visualization.

[bookpiofficial]

Exponential Latin square, exponential Sudoku matrix and bitwise operations | Chapter 02 | Advances in Mathematics and Computer Science Vol. 1

The main  thrust of the  paper is to provide  an interesting and  useful for students example  of using bitwise  operations in programming languages C  ++ and  Java. As an example, we describe an algorithm for receiving a Latin square of arbitrary order.   So we will outline some techniques for the use of bitwise operations. The  article  considers also the  special  case when the  Latin  square is a Sudoku  matrix.

Author  Details:

Krasimir Yordzhev, DSc

Faculty of Mathematics and  Natural Sciences, South-West University, 2700 Blagoevgrad, Bulgaria

Read full article: http://bp.bookpi.org/index.php/bpi/catalog/view/46/220/376-2

View Volume: https://doi.org/10.9734/bpi/amacs/v1

[quadratablog]

Here’s a really tiny puzzle I made this morning which uses only the least common multiples of numbers for clues.  For a high quality PDF and more puzzles, visit http://quadratablog.blogspot.com .

[cardgermanyhouselo]

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[opus-short-term-needs-fu-vqv]

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[partition-satin-bridal-qm]

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