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- 11:22, 25 October 2021 Conjugate pair (hist | edit) [1,097 bytes] 127.0.0.1 (talk) (Created page with "A '''conjugate pair''' is a pair of candidates with a strong link. They are the last 2 candidates for a single digit in a house they share. Different terms we...")
- 11:18, 25 October 2021 Bivalue (hist | edit) [293 bytes] 127.0.0.1 (talk) (Created page with "A '''Bivalue Cell''' is a cell with only 2 candidates left. Because there are only two candidates, one of them must be true. This creates a strong link between th...")
- 11:16, 25 October 2021 Fish and Subsets (hist | edit) [5,851 bytes] 127.0.0.1 (talk) (Created page with "Fish and Subsets are complementary to each other. One can transform a problem of finding a fish into a problem of finding a subset, and vice versa. == Trawling for Fi...")
- 11:09, 25 October 2021 Almost Locked Set (hist | edit) [1,062 bytes] 127.0.0.1 (talk) (Created page with "An '''Almost Locked Set''' is a group of '''N''' cells in a single house with candidates for '''N+1''' digits. In other words, it is one cell short from being...")
- 11:05, 25 October 2021 Template (hist | edit) [588 bytes] 127.0.0.1 (talk) (Created page with "A '''template''' or '''pattern''' is a possible configuration for all instances a single digit that does not violate the Sudoku rule. For a standard Sudoku, there are...")
- 10:59, 25 October 2021 Pattern Overlay Method (hist | edit) [6,222 bytes] 127.0.0.1 (talk) (Created page with "The '''Pattern Overlay Method''' or '''POM''' analyzes the way digits can be placed in the remaining candidate space. This solving technique should be avoided when...")
- 10:47, 25 October 2021 Pattern (hist | edit) [1,041 bytes] 127.0.0.1 (talk) (Created page with "Within the context of Sudoku, a '''pattern''' can be: * A recognizable structure in the remaining candidates for a single digit. * A template that represents o...")
- 10:31, 25 October 2021 BUG Lite (hist | edit) [1,110 bytes] 127.0.0.1 (talk) (Created page with "'''BUG Lite''' is a solving technique that fills the gap between Uniqueness Test and BUG. It deals with isolated deadly patterns which...")
- 10:19, 25 October 2021 Ariadne's Thread (hist | edit) [2,502 bytes] 127.0.0.1 (talk) (Created page with "Wikipedia article: ''Ariadne's thread'' In the Greek myth of Theseus and the Minotaur, Ariadne gave the hero Theseus a ball of st...")
- 10:17, 25 October 2021 Backtrack (hist | edit) [1,771 bytes] 127.0.0.1 (talk) (Created page with "Return to an earlier position in the solving path, after a contradiction or a dead end has been reached. Backtracking is mainly used by Sudoku computer programs to deter...")
- 10:14, 25 October 2021 Trial & Error (hist | edit) [561 bytes] 127.0.0.1 (talk) (Created blank page)
- 10:10, 25 October 2021 Contradiction (hist | edit) [1,057 bytes] 127.0.0.1 (talk) (Created page with "The state of the grid in which the puzzle no longer complies with the rule. Aliases include '''conflict''' and '''error'''. A '''contradiction''' is an essential par...")
- 10:09, 25 October 2021 Backdoor (hist | edit) [913 bytes] 127.0.0.1 (talk) (Created page with "A '''backdoor''' is a placement of one or more candidates in their respective cells, which allows the player to complete the Sudoku with relatively simple solvin...")
- 10:08, 25 October 2021 Guess (hist | edit) [618 bytes] 127.0.0.1 (talk) (Created page with "A digit placed into a cell without a logical reason. A controversial way to solve a Sudoku, usually employed when the player cannot advance using the solving te...")
- 10:04, 25 October 2021 Unique Rectangle (hist | edit) [1,135 bytes] 127.0.0.1 (talk) (Created page with "A '''Unique Rectangle''' is a deadly pattern formed by 4 cells that share 2 rows, 2 columns and 2 boxes. In Sudoku Variations with additional constra...")
- 10:02, 25 October 2021 Uniqueness Test (hist | edit) [14,073 bytes] 127.0.0.1 (talk) (Created page with "The '''Uniqueness Tests''' are a set of solving techniques that avoid the various deadly patterns, assuming that the given Sudoku is valid. The patterns invol...")
- 09:53, 25 October 2021 Bivalue Universal Grave (hist | edit) [4,012 bytes] 127.0.0.1 (talk) (Created page with "A '''Bivalue Universal Grave''' or '''BUG''' is a state of the grid in which every unsolved cell has 2 candidates, without the presence of Hidden Singles. Thi...")
- 09:42, 25 October 2021 Uniqueness Controversy (hist | edit) [2,248 bytes] 127.0.0.1 (talk) (Created page with "The use of solving techniques that base deductions on the premise that the Sudoku has a unique solution is controversial. On the one hand, there is only one fundament...")
- 09:12, 25 October 2021 Valid (hist | edit) [316 bytes] 127.0.0.1 (talk) (Created page with "A '''valid''' or '''proper''' Sudoku has a unique solution, otherwise it is an invalid Sudoku. Opinions differ about the use of this qualifier. Some players state...")
- 08:55, 25 October 2021 Solution (hist | edit) [544 bytes] 127.0.0.1 (talk) (Created page with "The '''solution''' to the Sudoku puzzle, represented by a [grid]] in which each cell contains a digit between '''1''' and '''9''', without violating the Rule. In the...")
- 08:45, 25 October 2021 Deadly pattern (hist | edit) [8,655 bytes] 127.0.0.1 (talk) (Created page with "A '''deadly pattern''' is a set of cells whose candidates form a pattern that causes the puzzle to have multiple solutions. Deadly patterns can never be encounter...")
- 08:43, 25 October 2021 K9 (hist | edit) [830 bytes] 127.0.0.1 (talk) (Created page with "'''k9''' is a system to identify cells using the row letters and column numbers as coordinates. The letters '''i''' and '''j''' are skipped to avoid confusion wit...")
- 22:18, 24 October 2021 Last Digit (hist | edit) [280 bytes] 127.0.0.1 (talk) (Created page with "When there is only one instance of a digit missing in the grid, it can only go into a single cell. This is the '''Last Digit'''. The Last Digit is a Hidden Sing...")
- 22:17, 24 October 2021 Full House (hist | edit) [340 bytes] 127.0.0.1 (talk) (Created page with "A '''Full House''' is a row, column or box with a single unsolved cell. There is only one missing digit and one empty cell. The last candidate is both a [...")
- 22:11, 24 October 2021 Sudoku-X (hist | edit) [1,319 bytes] 127.0.0.1 (talk) (Created page with "'''Sudoku-X''' is one of the better known Sudoku Variations. It is similar to a standard Sudoku, but both diagonals must also contain digits 1 through 9. Because...")
- 22:09, 24 October 2021 Skewed Fish (hist | edit) [751 bytes] 127.0.0.1 (talk) (Created page with "A '''Skewed Fish''' is a variant of the fish technique that can be applied to Sudoku-X. An ordinary fish-in-the-rows can have one or two of the rows replaced by di...")
- 22:08, 24 October 2021 Kraken Fish (hist | edit) [3,689 bytes] 127.0.0.1 (talk) (Created page with "A '''Kraken Fish''' is a fish pattern which is connected to a candidate elimination cell (CEC) in such a way that placing this candidate would reduce the sec...")
- 22:06, 24 October 2021 Mutant Jellyfish (hist | edit) [835 bytes] 127.0.0.1 (talk) (Created page with "A '''Mutant Jellyfish''' is a Mutant Fish of size 4. Due to the complexity and the high risk of degeneration when only a few vertices are missing, this fish patter...")
- 22:02, 24 October 2021 Mutant Swordfish (hist | edit) [856 bytes] 127.0.0.1 (talk) (Created page with "A '''Mutant Swordfish''' is a Mutant Fish of size 3. Here is an example: Image:mutant swordfish.png All the candidates in rows 1 and 9 and column 7 (the...")
- 22:00, 24 October 2021 Mutant Fish (hist | edit) [3,104 bytes] 127.0.0.1 (talk) (Created page with "When fish are no longer restricted to rows and columns, strange varieties emerge. When either the defining set or the secondary set contains a mixture of r...")
- 21:57, 24 October 2021 Franken Jellyfish (hist | edit) [3,754 bytes] 127.0.0.1 (talk) (Created page with "The '''Franken Jellyfish''' is a fish pattern of the Franken Fish type. This type allows either the defining set or the secondary set to contain boxes, as...")
- 21:53, 24 October 2021 Franken Swordfish (hist | edit) [7,889 bytes] 127.0.0.1 (talk) (Created page with "The '''Franken Swordfish''' is a fish pattern of the Franken Fish type. This type allows either the defining set or the secondary set to contain boxes, as...")
- 21:49, 24 October 2021 Franken Fish (hist | edit) [1,013 bytes] 127.0.0.1 (talk) (Created page with "A '''Franken Fish''' is a fish pattern where one or more lines in the defining set or the secondary set has been replaced by an equal number of boxes. The...")
- 21:46, 24 October 2021 Sashimi Jellyfish (hist | edit) [3,341 bytes] 127.0.0.1 (talk) (Created page with "A '''Sashimi Jellyfish''' is a fish pattern, formed by an incomplete Jellyfish which is stabilized by additional candidates in a box that intersects with one o...")
- 21:40, 24 October 2021 Sashimi Swordfish (hist | edit) [2,492 bytes] 127.0.0.1 (talk) (Created page with "A '''Sashimi Swordfish''' is a Finned Swordfish that has no candidate for the underlying Swordfish in the box containing the fin. This is only one member...")
- 21:37, 24 October 2021 Sashimi X-Wing (hist | edit) [1,044 bytes] 127.0.0.1 (talk) (Created page with "A '''Sashimi X-Wing''' is a Finned X-Wing that does not have a candidate for the constituent X-Wing in the box that contains the fin. == Single Fin == Whe...")
- 21:31, 24 October 2021 Sashimi Fish (hist | edit) [1,412 bytes] 127.0.0.1 (talk) (Created page with "'''Sashimi Fish''' is named after the '''Sashimi Observation''' made by ''Myth Jellies'', and is a type of Finned Fish. The writer noticed that a fish pattern does no...")
- 21:21, 24 October 2021 Finned Jellyfish (hist | edit) [1,450 bytes] 127.0.0.1 (talk) (Created page with "A '''Finned Jellyfish''' is the finned version of a Jellyfish. It is a single-digit solving technique. The formal definition for a Finned Jellyfis...")
- 21:01, 24 October 2021 Squirmbag (hist | edit) [968 bytes] 127.0.0.1 (talk) (Created page with "A '''Squirmbag''' is a fish with 5 rows and 5 columns. ; Squirmbag in the rows : When all candidates for a particular digit in 5 rows are located in only...")
- 20:55, 24 October 2021 Jellyfish (hist | edit) [2,067 bytes] 127.0.0.1 (talk) (Created page with "A '''Jellyfish''' is a fish with 4 rows and 4 columns. == Jellyfish in the Rows == : When all candidates for a particular digit in 4 rows are located in...")
- 20:52, 24 October 2021 X-Wing (hist | edit) [1,426 bytes] 127.0.0.1 (talk) (Created page with "An '''X-Wing''' is a fish pattern involving 2 rows and 2 columns. It is a single-digit solving technique that allows the player to eliminate candida...")
- 20:41, 24 October 2021 Finned Swordfish (hist | edit) [2,289 bytes] 127.0.0.1 (talk) (Created page with "A '''Finned Swordfish''' is the finned version of a Swordfish. It is a single-digit solving technique. The formal definition for a Finned Swordfis...")
- 20:38, 24 October 2021 Continuous (hist | edit) [694 bytes] 127.0.0.1 (talk) (Created page with "A loop is '''continuous''' when it fully complies with the rules defined for that loop. A continuous loop has alternating weak and strong links all the way round. Candidat...")
- 20:36, 24 October 2021 Loop (hist | edit) [593 bytes] 127.0.0.1 (talk) (Created page with "A '''loop''' is a cyclic pattern of linked cells or candidates. Loops are usually represented by chains, where the first and the last cell are the same. Like...")
- 20:32, 24 October 2021 Fishy Cycle (hist | edit) [1,915 bytes] 127.0.0.1 (talk) (Created page with "A '''Fishy Cycle''' is a continuous loop of candidates for a single digit. It has alternating strong links and weak links. The Fishy Cycle was first i...")
- 20:26, 24 October 2021 Swordfish (hist | edit) [3,573 bytes] 127.0.0.1 (talk) (Created page with "A '''Swordfish''' is a basic fish pattern with 3 rows and 3 columns. It is a single-digit solving technique. == Swordfish in the Rows == : When all can...")
- 20:16, 24 October 2021 Finned X-Wing (hist | edit) [843 bytes] 127.0.0.1 (talk) (Created page with "A '''Finned X-Wing''' is an X-Wing pattern that has one or more extra candidates in one of the 4 boxes. Like regular fish, it is a single-digit solving t...")
- 18:37, 24 October 2021 Finned Fish (hist | edit) [1,105 bytes] 127.0.0.1 (talk) (Created page with "'''Finned Fish''' is a variety of fish that has extra candidates in a single box. Like regular fish, it is a single-digit solving technique. The same name...")
- 18:35, 24 October 2021 Fin (hist | edit) [346 bytes] 127.0.0.1 (talk) (Created page with "The name '''fin''' is used to identify the surplus candidates of a Finned Fish. This surplus is confined to a single box. The remaining candidates in the pattern f...")
- 18:07, 24 October 2021 Secondary set (hist | edit) [651 bytes] 127.0.0.1 (talk) (Created page with "The term '''secondary set''' is used when describing fish patterns. A fish pattern has 2 interacting sets of constraints. These are usually rows or columns, b...")