How to Solve Arrow Maze Puzzles
Label all the arrows with a number from 1 to X (X is the highest possible number) showing the correct sequence of arrows. Each arrow points to the next in the sequence, but it’s not necessarily adjacent.
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 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 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.
How to Solve Futoshiki Puzzles
Fill in numbers from 1 to N (N is the size of the grid) such that there are no duplicates in rows or columns. Inequality symbols between adjacent cells indicate which number is larger.
How to Solve Hiroimono Puzzles
Fill in the stones with numbers to show the correct order to pick them up, moving from one stone to another by the grid lines.
How to Solve Hoshi Puzzles
Fill the grid with the numbers 1-9 so that there are no duplicates in any large triangle region or any of the three possible rows for each cell. Rows are considered to cross the gap.
How to Solve Math Ladder Puzzles
Change the top row of numbers into the bottom row of numbers with a series of addition and subtraction operations in each column. Each operation will always result in a single digit.