[derefr]

That just means that the "real game" of Cribbage lasts for one tournament, not one session. If you only played chess openings, rather than entire games, they might win some of the time as well. Almost all games that adults play competitively are made to decisively rank their players' powers of strategy over their proper play-length. Games for children introduce progressively higher levels of chance, the younger and therefore less-equipped the child is to deal with real strategy. The maximum of this slope comes in early-childhood "games" such as Chutes and Ladders—not really a game at all, as there are no strategic choices made at any point.

From this, you can take the idea that any game can be adapted for players of unequal strategic strength simply by adding chance components to it, or replacing some choice points with chance. What if, in Chess for example, you had to roll a die at the beginning of your turn to find out the maximum number of squares any of your pieces could move that turn? Or if, upon a bad roll, your opponent got to decide which of your pieces you must move?