How to Solve Arukone Puzzles
Connect each pair with a line that only travels orthogonally. These paths do not cross and might not use every cell in the grid.
How to Solve Battleships Puzzles
Place a fleet into the grid using the clues around the edge. Ships may not touch each other in any direction.
How to Solve Bricks Puzzles
Place numbers from 1 to N (N being the size of the grid) such that there are no duplicates in rows or columns. Each brick must have both an odd and an even number.
How to Solve Calcudoku Puzzles
Place numbers from 1 to N (N being the size of the grid) such that there are no duplicates in rows or columns. Each region has a total that must be reached by applying an operator to all digits in the region.
How to Solve Combination Lock Puzzles
Use clues to solve a code between 3 and 5 digits long.
How to Solve Comparison Sudoku Puzzles
Fill in the grid with the numbers 1-9 such that there are no duplicates in any row, column, or 3×3 region. Inequality symbols between adjacent cells indicate which cell has the greater number.
How to Solve Domino Hunt Puzzles
Divide a grid of numbers by locating the correct position for all possible dominoes in a given set.
How to Solve Easy as ABC Puzzles
Given a range of letters (usually A through C), place them into the grid so that they each appear one time in every row and column. Commonly, the grid is also larger than required, so empty cells are part of the solution.
How to Solve Fillomino Puzzles
Divide the grid into polyomino regions by filling every cell with a number. Contiguous groups of cells with the same number form each region.
How to Solve From 1 to X Puzzles
Fill each region with numbers from 1 to X (X is the size of the region). Numbers outside the grid indicate the sum of that row of column.