127.0.0.1: Created page with "A '''connected pair''' is a pair of candidates for which we have established that they cannot be false at the same time. Connected pairs are formed by solving technique..."

2021-10-25T12:41:35Z

Created page with "A '''connected pair''' is a pair of candidates for which we have established that they cannot be false at the same time. Connected pairs are formed by solving technique..."

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A '''connected pair''' is a pair of [[candidate]]s for which we have established that they cannot be false at the same time.

Connected pairs are formed by [[solving technique]]s like [[coloring]], [[XY-Wing]] and several types of [[chain]]s. Because they cannot be false together, at least one of them must be true. This often allows us to [[eliminate]] candidates that can [[see]] both ends of the connected pair.

Do not confuse them with [[conjugate pair]]s, in which only one of the candidates can be true. A conjugate pair satisfies the definition of a connected pair, but it is not possible to use a connected pair as a conjugate pair.

Connected pair - Revision history

127.0.0.1: Created page with "A '''connected pair''' is a pair of candidates for which we have established that they cannot be false at the same time. Connected pairs are formed by solving technique..."