# Rey's Puzzles

Difficulties are marked according to the Logic Masters Germany scale. These are just my best guesses, so please let me know if you have a different opinion!

All OctoPuzzles links come with walkthroughs if you need help at any point. (Not all puzzles have OctoPuzzles links.)

## KailOVER #

Published on November 7, 2023.

*Difficulty: 3*

*Tags: Sudoku, Region Sum Lines, Circle Counters, Diagonal*

## Circular Whispers #

Published on October 22, 2023.

*Difficulty: 2*

*Tags: Sudoku, Circle Counters, German Whispers, Odd/Even*

## River #

Published on July 27, 2023.

*Difficulty: 2*

*Tags: Sudoku, Renban, Killer Cages*

## Wiring #

Published on July 3, 2023.

*Difficulty: 2*

*Tags: Sudoku, German Whispers, Kropki*

## Last Stand #

Published on June 17, 2023.

*Difficulty: 3*

*Tags: Sudoku, Thermometers*

## Fillomino Chaos Construction 2 #

Published on June 5, 2023.

*Difficulty: 5*

*Tags: Sudoku, Chaos Construction, Fillomino, Sightlines*

Divide the grid into 9 orthogonally connected regions of size 9, and place the digits 1-9 in the grid such that each row, column, and region has one copy of each digit.

Then, divide each region into some polyominoes such that no two polyominoes of the same size share an edge.

Digits in a circle indicate the size of the polyomino it is in, and digits in a square indicate the number of polyominoes in its region.

A digit in a clued cell indicates the number of cells seen in the indicated directions combined (including itself). POLYOMINO borders obstruct vision.

Penpa solvers only: Answer check requires all digits to be filled out, green edges for region borders, and double edges for pentomino borders that are NOT region borders. (All region borders are also pentomino borders because of the rules.)

## Mind The Gap #

Published on May 24, 2023.

*Difficulty: 3*

*Tags: Sudoku, X-Sums, Diagonal*

## WXV #

Published on May 24, 2023.

*Difficulty: 2*

*Tags: Sudoku, Renban, German Whispers, XV*

This was a gift for my high school Macroeconomics teacher.

## Push #

Published on May 24, 2023.

*Difficulty: 2*

*Tags: Sudoku, Killer Cages, Kropki*

## Fillomino Chaos Construction #

Published on May 22, 2023.

*Difficulty: 5*

*Tags: Sudoku, Chaos Construction, Fillomino*

Divide the grid into 9 orthogonally connected regions of size 9, and place the digits 1-9 in the grid such that each row, column, and region has one copy of each digit.

Then, divide each region into some polyominoes such that no two polyominoes of the same size share an edge.

Digits in a circle indicate the size of the polyomino it is in, and digits in a square indicate the number of polyominoes in its region.

Penpa solvers only: Answer check requires all digits to be filled out, green edges for region borders, and double edges for pentomino borders that are NOT region borders. (All region borders are also pentomino borders because of the rules.)

## Tepper #

Published on May 8, 2023.

*Difficulty: 2*

## Quadrants #

Published on April 22, 2023.

*Difficulty: 2*

## 6:13 #

Published on April 16, 2023.

*Difficulty: 3*

*Tags: Sudoku, Anti-Knight, Killer Cages*

## Conjoined #

Published on April 4, 2023.

*Difficulty: 2*

*Tags: Sudoku, Killer Cages*

## 9x9 Skyscraper Thermos #

Published on March 23, 2023.

*Difficulty: 4*

*Tags: Sudoku, Skyscrapers, Thermometers*

## 6x6 Skyscraper Thermos #

Published on March 22, 2023.

*Difficulty: 2*

*Tags: Sudoku, Skyscrapers, Thermometers*

## Minutia #

Published on March 21, 2023.

*Difficulty: 1*

*Tags: Sudoku, Killer Cages, Diagonal*

## Pointy #

Published on March 19, 2023.

*Difficulty: 2*

## Wings #

Published on March 18, 2023.

*Difficulty: 2*

*Tags: Sudoku, Killer Cages, Diagonal*

## Zoom #

Published on March 13, 2023.

*Difficulty: 2*

## Monster Without A Name #

Published on March 11, 2023.

*Difficulty: 4*

*Tags: Sudoku, Chaos Construction, Monster Cages*

This puzzle is a chaos construction. Cages indicate the product of each region sum contained in a cage. For instance, if a 4-cell cage contained 1,2 in one region and 3,4 in another region, its total would be (1+2)x(3+4)=80. Cages may be contained in one region, in which case, the total is just the sum of the cells. Digits may not repeat in a cage.

## Cars #

Published on March 5, 2023.

*Difficulty: 2*

*Tags: Sudoku, Killer Cages, Kropki*

## Monster Cages #

Published on March 4, 2023.

*Difficulty: 2*

*Tags: Sudoku, Chaos Construction, Monster Cages*

This puzzle is a chaos construction. Cages indicate the product of each region sum contained in a cage. For instance, if a 4-cell cage contained 1,2 in one region and 3,4 in another region, its total would be (1+2)x(3+4)=80. Cages may be contained in one region, in which case, the total is just the sum of the cells. Digits may not repeat in a cage.

## Intersections #

Published on February 27, 2023.

*Difficulty: 2*

*Tags: Sudoku, X-Sums, Diagonal*

## Starry Sums #

Published on February 21, 2023.

*Difficulty: 2*

*Tags: Sudoku, Diagonal, Star Battle*

Shade a square in each row, column, and region such that each digit 1-9 is shaded once and no two shaded squares touch, not even diagonally. Digits outside the grid indicate the sum of the digits it sees before the shaded square.

## QT #

Published on February 17, 2023.

*Difficulty: 1*

*Tags: Sudoku, Thermometers, Quads*

## X-Lines Sudoku #

Published on February 14, 2023.

*Difficulty: 4*

*Tags: Sudoku, X-Lines, Killer Cages*

On an X-Line, if X is on the line then so must 10-X. Digits may repeat on a line, so 1159 would be a valid X-Line.

## Class of '23 #

Published on February 11, 2023.

*Difficulty: 3*

*Tags: Sudoku, Killer Cages*

## El Corazón #

Published on February 8, 2023.

*Difficulty: 2*

*Tags: Sudoku, Killer Cages, Thermometers*

## Stairs #

Published on February 6, 2023.

*Difficulty: 2*

*Tags: Sudoku, Killer Cages, Diagonal*

## Highway #

Published on February 1, 2023.

*Difficulty: 2*

*Tags: Sudoku, Killer Cages, Diagonal*

## Genome #

Published on January 31, 2023.

*Difficulty: 2*

*Tags: Sudoku, German Whispers, Renban, Kropki*

## Bird #

Published on January 19, 2023.

*Difficulty: 3*

*Tags: Sudoku, German Whispers, Little Killers, X-Sums*

## Kakuro Sudoku #

Published on January 11, 2023.

*Difficulty: 2*

*Tags: Sudoku*

Each number in a shaded cell is either the sum of the two digits below or to the right of it (possibly both).

## Equations #

Published on January 7, 2023.

*Difficulty: 2*

Digits in cells separated by +, x, and = signs form valid arithmetic operations. (All arithmetic operations involve only one-digit numbers.) Classic sudoku rules apply.

## Uzumaki #

Published on January 6, 2023.

*Difficulty: 1*

*Tags: Sudoku, Classic Sudoku*

## Hooks and Swipes #

Published on January 4, 2023.

*Difficulty: 1*

*Tags: Sudoku, Thermometers*

## Snowflake #

Published on January 3, 2023.

*Difficulty: 1*

*Tags: Sudoku, Classic Sudoku*

## Distant Neighbors #

Published on January 2, 2023.

*Difficulty: 2*

*Tags: Sudoku, Dutch Neighbors*

Every number must be adjacent to at least one number 4 away from it. For example, 4 must share a side with either a 8 or a 9 (possibly both).

## Close Neighbors #

Published on December 31, 2022.

*Difficulty: 1*

*Tags: Sudoku, Consecutive Neighbors, CTC Features*

Every number must share a side with at least one other consecutive number. For example, 2 must share a side with either a 1 or a 3 (possibly both).

## That's What I Mean #

Published on December 28, 2022.

*Difficulty: 2*

*Tags: Sudoku, Killer Cages, Averaging Cells*

Numbers in a blue circle are the arithmetic mean of its orthogonal neighbors.

## 7-Eleven #

Published on December 8, 2022.

*Difficulty: 3*

*Tags: Sudoku, Killer Cages*

The digits orthogonally adjacent to a 7 must sum to 11.

## 5 #

Published on December 3, 2022.

*Difficulty: 2*

*Tags: Sudoku, German Whispers, CTC Features*

## Alphabet Soup #

Published on November 4, 2022.

*Difficulty: 5*

*Tags: Sudoku, Thermometers*

Each thermo displayed in the right grid must be placed in a unique region on the left grid. Moreover, the position of each thermo must not change with respect to its region (meaning no rotation or translation within the region).

Also note that the answer check will only work when the right side is cleared of digits (though you, of course, may consider yourself finished at the time you place the last digit in the left side of the grid).

An example puzzle is shown below.

**Hint 1**

**Hint 2**

## X Marks the Spot #

Published on October 28, 2022.

*Difficulty: 3*

*Tags: Sudoku, Thermometers, Arrows*