Latinski kvadrat je polje velikosti n×n, pri čemer je n celo število, ki se v vsaki vrstici in vsakem stolpcu pojavi natanko enkrat.

Najpogostejša omejitev so notranji kvadrati. Kvadrat 9x9 ima 9 notranjih kvadratov, kot lahko vidite na sliki.

Sestavljanka se rešuje enako kot sudoku, le da so notranji kvadrati nepravilnih oblik, imenovani tudi liki.

Omejitve se običajno dodajo pri postavitvi številk, ki presegajo običajne vrstice in stolpce. Ena od teh omejitev je diagonalna varianta.

Variante so lahko kombinirane. Na primer: kvadrat ima notranje kvadrate in diagonali. Lahko sta tudi več kot dve diagonali.

Mreža killer sudokuja je prekrita z liki (skupinami polj), omejenimi s prekinjenimi črticami. Vsak lik obkroža 2 ali več polj. Vsota mora biti enaka številki, ki je zapisana v levem zgornjem delu tega lika.

Greater Than (or Less Than) Sudoku has no given clues (digits). Instead, there are "Greater Than" (>) or "Less Than" (<) signs between adjacent cells, which signify that the digit in one cell should be greater than or less than another.

Kakuro is played on a grid of filled and barred cells, "black" and "white" respectively. The grid is divided into "entries" (lines of white cells) by the black cells. The black cells contain a slash from upper-left to lower-right and a number in one or both halves. These numbers are called "clues".

The grid is divided into heavily outlined cages (groups of cells). The numbers in the cells of each cage must produce a certain "target" number when combined using a specified mathematical operation (either addition, subtraction, multiplication or division).

Futoshiki is played on a grid that may show some digits at the start. Additionally, there are "Greater Than" (>) or "Less Than" (<) signs between adjacent cells, which signify that the digit in one cell should be greater than or less than another.

Straights is played on a grid that is partially divided by black cells into compartments. Compartments must contain a straight - a set of consecutive numbers - but in any order (for example: 2-1-3-4). There can also be white clues in black cells.

The Skyscraper puzzle has numbers along the edge of the grid. Those numbers indicate the number of buildings which you would see from that direction if there was a series of skyscrapers with heights equal the entries in that row or column. For example: if the line has 4 cells and if the first number in the cell is 4, you will see only one skyscraper because the 4-floor skyscraper hides the 1-floor, 2-floor, and 3-floor skyscrapers.

The Skyscrapers puzzle can have Parks (empty cells).

The numbers along the edge of the Sum Skyscraper grid indicate the sum of heights of the visible buildings.

Complete the grid with zeros (0's) and ones (1's) until there are just as many zeros and ones in every row and every column.

Bricks is another type of Latin Square. Grid is divided into pairs and look like brick wall.