PHI Division Ltd. was founded in 1977 to solve algorithmic problems that need an extremely high amount of calculation and in addition cannot be solved in due time to be useful in business without the ‘heuristics of finesse’. E.g. the optimal scheduling of worksheets, timesheets, timetables, rosters. Contrary to the general trend PHI Division was using the computer in the original way - according to the original idea of Babbage and Neumann to perform a calculation that cannot be made by a spreadsheet program. We wrap up the core of the algorithms with the most up-to-date technology (currently Java web services plus thin clients), but the uniqueness remains our mathematical knowledge utilizing AI. In our solutions we are aiming at independence from different types of hardware and operation systems by using Java programming language and runtime environment.