From The Box... Three Dimensional Dominoes > 45 triangular dominoes, each with sectional numbers to be matched up as in conventional dominoes, but wait till you see the challenging differences. > Six exciting "3-D" domino charts included. >One Interesting "Solitaire" domino game chart included Note: "3-D" dominoes was created and designed by mathematical experts following a specific formula. You will find the games most effective and more challenging when played on the design charts inside, whether for multiple or solitaire play. > Full simple directions and charts inside box.