Like many chess tactics, they succeed because the opponent is unable to meet two threats at once.
As with any fairly common chess tactic, it is impossible to pinpoint when the first zwischenzug was played.
Until players reach the skill level of "master", chess tactics tend to ultimately decide the outcomes of games more often than strategy does.
Sometimes such a check is part of a chess tactic such as a fork, a skewer, or a discovered attack on another piece.
It is a chess tactic which seldom arises, and is therefore often overlooked.
A combination is usually built out of more fundamental chess tactics such as forks, pins, skewers, undermining, discovered attacks, etc.
Batteries are often used as part of a combination which may involve other types of chess tactics as well.
He then read a lot of chess tactics, and eventually beat his friend.
According to chess tactics, a bishop and a knight are usually of about equal value.
Exchanges of pieces are commonly involved in chess tactics and strategy.