Игра Домино Grapet 341046

At the beginning, each player receives 7 blocks and one of the participants is drawn as the starting player.
He lays down any of his blocks, starting the so-called a chain, to the ends of which players add one domino one at a time, but in such a way that the number of holes at the ends of the adjacent blocks must be the same.
Blocks that have the same number of holes at both ends are called doubles.
The doubles are added to the ends of the chain turned at 90 degrees, and after the first double is placed, the chain layout is modified so that it (the first double) is in the center.
There is a variant of the game in which the ends of the first double are two additional ends of the chain, to which more blocks can be added.