You have 45 domino pieces with all possible combinations of the numbers 0-8.
The goal is to make a «train» as long as possible in such a way that the product of the two numbers that are put together is an even number greater than 5 and less than 39. The number in the ends is not used in any multiplication.
11 x 9 = 99 6 x 9 = 54
(This exapmle use wrong pieces)
Redaktør Svein H. Torkildsen