Single defeat knockout:
Single-loss elimination system is a form of competition. The loser of each game will be isolated from the champion or championship of that game, but it does not mean that there will be no competition after the loser is eliminated. In some competitions, the losers still need to compete for places or heritages.
Double defeat elimination:
Double-loss elimination system is a form of competition, which is different from ordinary elimination system. The competitor lost two games before losing the possibility of winning the championship.
The double-loss elimination system is generally divided into two groups, the winner group and the loser group. After the first round of competition, the winner belongs to the winner group and the loser belongs to the loser group to continue the competition. After each round, the losers in the loser group will be eliminated; The situation of the winner group is similar, except that the loser is only eliminated from the winner group and becomes a loser group, and will be eliminated after failing again in the loser group.
Similar to the common single-loss elimination system, the common double-loss elimination system also has 2-power contestants (for example, 4,8, 16) to ensure an even number of contestants in each round.
Extended data:
Advantages and disadvantages of single defeat elimination system;
superiority
1, because the loser in the knockout stage will be out, and the competition is fierce. Except for the final qualifying consolation match, every round of the knockout round is crucial, so there is no meaningless game.
2. It can accommodate a large number of contestants in a short time, so it has become the competition form of many competitions.
disadvantaged
1, not suitable for those games that may have a lot of lottery. For example, draw is very common in chess, and white is the first advantage, so it is often necessary to play one more game in each round to decide the outcome, so it is not suitable. In addition, in football matches, after a draw, it is often necessary to play overtime or even take a penalty (12 yard penalty) to decide the outcome.
2. Most of the contestants are eliminated prematurely, and there may be only a few games, so some games adopt the double-loss elimination system.
Advantages and disadvantages of double loss elimination system;
superiority
1, one advantage of the double-loss elimination system over the single-loss elimination system is that the third and fourth places can be determined without extra comfort or ranking. Reduce the final ranking of excellent players lower than poor players due to poor lottery.
disadvantaged
The main disadvantage of 1 and double-loss elimination system is that the matching number is much higher than that of single-loss elimination system. Because the contestants will be eliminated if they lose two games, it takes 2*N- 1 (or 2*N-2) games to decide the champion for a game with n contestants.
Another disadvantage is that the winner may lose only one game in the final, but he lost the championship. But it is generally believed that this result is acceptable, because the winner plays fewer games than the loser, which is equivalent to several rounds of bye. One of the ways to make up for it is to completely lose and eliminate, and then decide the champion in one game.
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