Ideal puzzle

First of all, Dominosa is a completely different game that Sudoku. It really surprizes me when some authors call this game Sudoku Dominosa, or they say: If you liked Sudoku, you WILL like Dominosa. It sounds to me like marketing or comercial talk. Dominosa has no restriction regarding the placements of digits. NONE ! Playing area can be of any shape (check my other posts), no columns, rows and blocks have to add to certain sum, multiple, the same digits can be in the same columns and rows etc. Secondly, there is no easier game to be created by hand. Try it with Sudoku. And good luck !Thirdly, solving Dominosa is real fun. No sophisticated technics are needed, only keen eye and some deductive skills (which everybody can develop). More later.