You could have downloaded pyranum 1.0 from our software library for free. This free tool was originally produced by Ihsan. The program lies within Games, more precisely Puzzle. The most frequent installation filename for the software is: PYRANUM.EXE. The most popular version among the program users is 1.0.
From the developer:
PyraNum is a simple math puzzle. You complete a pyramid of numbers by filling in blank positions given three rules: a cell value must be sum or difference of the two cells below, a row cannot have duplicate numbers, a number cannot be less than one or more than the grid size.
You may want to check out more software, such as Firewoks Extravaganza, Sudoku XL-Solver or Leaf Buster, which might be similar to pyranum.