Rooted at 15:36, 4 June 2020

2020-06-04T15:36:15Z

Rooted: Created page with "A limited form of Trial & Error where only candidates for a single digit are considered. '''Nishio''' is a slightly controversial solving technique that exami..."

2020-06-04T15:33:12Z

Created page with "A limited form of Trial & Error where only candidates for a single digit are considered. '''Nishio''' is a slightly controversial solving technique that exami..."

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A limited form of [[Trial & Error]] where only [[candidate]]s for a single [[digit]] are considered.

'''Nishio''' is a slightly controversial [[solving technique]] that examines the effects of placing a candidate in a [[cell]] on the remaining candidates for the same digit. When a [[contradiction]] is found, the tried candidate can be eliminated.

To avoid the smell of Trial & Error, players often perform Nishio moves in reverse. To understand how this works, you need to consider the nature of a Nishio contradiction. It occurs when all the candidates for a [[house]] are eliminated, as a result of which the house cannot be completed. In the reverse operation, all the candidates for the conflicting house are tried in turn. In each case, the original candidate will be eliminated. Because this proves that there exists no case in which the original candidate can exist, you may eliminate it from the grid.

There is a wide range of single digit solving techniques which diminish the need for Nishio.

'''Nishio''' can be replicated by computer programs using [[template]]s.
[[Category:Solving Techniques]]

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−	A limited form of [[Trial & Error]] where only [[candidate]]s for a single [[digit]] are considered.	+	A limited form of Trial & Error where only [[candidate]]s for a single [[digit]] are considered.

	'''Nishio''' is a slightly controversial [[solving technique]] that examines the effects of placing a candidate in a [[cell]] on the remaining candidates for the same digit. When a [[contradiction]] is found, the tried candidate can be eliminated.		'''Nishio''' is a slightly controversial [[solving technique]] that examines the effects of placing a candidate in a [[cell]] on the remaining candidates for the same digit. When a [[contradiction]] is found, the tried candidate can be eliminated.

Nishio - Revision history

Rooted at 15:36, 4 June 2020

Rooted: Created page with "A limited form of Trial & Error where only candidates for a single digit are considered. '''Nishio''' is a slightly controversial solving technique that exami..."