Dominoes All Sevens

A seven-point chain decides every round in Dominoes All Sevens. The blank double stays out of play, and the hand size shifts with the table: seven tiles with two players, six with three, five with four. Leftover pieces go into the boneyard. The first lead comes from a draw for a high tile. The seat to the left of the previous leader takes that role in the next round. Any tile may hit the table first. From there, each placement must leave touching ends totaling seven. Doubles lie sideways like regular pieces until the first double lands as the spinner. Four branches grow from that tile.

How to play?

Place a matching tile on an exposed end when the two touching values add up to seven. Draw from the boneyard after a dead hand, stopping after a playable piece appears or only two tiles remain there. A round stops when one hand runs out of tiles. Play also stops on a block when nobody can lay down a piece. Emptying a hand takes the round win. A blocked round goes to the lowest pip total. Equal low totals cancel the score for that hand. Add points from the gap between the winner's pips and the other players' combined pips. Pass 100 after several rounds to take the match.