How to Solve Shikaku Puzzles
Divide the grid into rectangles in which each contains exactly one number that is equal to the area of the rectangle.
How to Solve Slitherlink Puzzles
Connect grid dots to create a single closed loop that doesn’t cross itself or branch. Number clues indicate how many line segments are adjacent.
How to Solve Snake Puzzles
Use the clues to uncover the body of a snake, given the location of the head and tail. The body is a 1-cell wide path that travels only in orthogonal directions and may never touch itself, even diagonally.
How to Solve Stitches Puzzles
Connect each region to all neighboring regions with stitches between two adjacent cells.
How to Solve Sudoku Puzzles
Fill the grid with the numbers 1-9 such that there are no duplicates in any row, column, or 3×3 region. At the bottom of this tutorial are several variants for which the solving process is basically the same.
How to Solve Tents and Trees Puzzles
Place tents in the grid so that each tree has its own orthogonally adjacent tent. Clues around the edge indicate the number of tents in that row or column. Tents may not be adjacent in any direction.
How to Solve Web of Lies Puzzles
Use relationship clues – solid lines are true, dashed lines are false – to determine the correct groupings of items from several lists.
How to Solve Yagit Puzzles
Divide the grid into fenced regions, each containing only one type of animal. No empty regions are allowed.