Mazes Maze is a puzzle consisting of a complicated network of paths or passages. The aim is to find a path between two selected points. CalcuDoku Each puzzle consists of a grid containing blocks surrounded by bold lines. The object is to fill all empty squares so that the numbers 1 to N (where N is the number of rows or columns in the grid) appear exactly once in each row and column and the numbers in each block produce the result shown in the top-left corner of the block according to the math operation appearing on the top of the grid. In CalcuDoku a number may be used more than once in the same block. Sudoku Each puzzle consists of a 6x6 grid containing given clues in various places. The object is to fill all empty squares so that the numbers 1 to 6 appear exactly once in each row, column and 3x2 box. Futoshiki Place numbers of the given range in the grid 4x4 such that every row and column contains each number exactly once. Inequality constraints must be satisfied. The open end of the sign denotes the greater number.
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