Very Hard In the above example, the 1s form a conjugate pair, and the 2s also form a - Hence R9C1 is true (1) then all cells in blue are false and all cells in green are true. (Free and Paid options), PEDRO from CAIRNSBrian from VasastanBiggles from West Tennessee, Indicate which comments you would like to be able to see. two squares. red 2s will be "on," we know that the red 2s can't possibly be correct, because there Therefore, all of the red 2s can be eliminated--even the one that is not highlighted The proposed project was inspired by Lego set 6163: A World of LEGO Mosaic, which I got in 2007. If c6<>1, then still c3<>1. Techniques for solving Sudoku Let’s move into the techniques of how to play Sudoku. puzzle Go. Multi-Colouring Type 1 eg 2 : Load Example or : From the Start This second example is provided to illustrate the idea a bit further. Easy Techniques. one unit, which is not allowed. Try and stay within the lines. Download Color Sudoku for free. image. The term, coloring is derived from the common illustration of this technique
Steve, is there a way to put use Simple Sudoku to put in one's own puzzle so that you can color them? Print difficult Sudoku and use different colors and symbols to solve it. To solve hard level Sudoku puzzles, you should already know some tactics and tricks. Now we can see the blue cell that shares the common row with the second green cell cannot be 6. so they don't create a contradiction. El Sudoku es un rompecabezas de lógica y uno de los pasatiempos que más engancha. yellow 4s. Here is a puzzle where two 6s can be removed because they can Sudoku Printable Medium 6 Per Page. In fact, this version of Sudoku puzzle is known as the Color Sudoku, quite widespread in the web browser based games and mobile games. For example, in the image above, I alternate You can give the opposite color to the other number in the pair. Is there a better way to learn this? Weak ColorsExtends Simple-Colors by the use of hinge linkages. In column g, the 3's are limited to two locations, g4 and g8. This is because This isn't a game that you will win immediately - you will have to revisit the same squares over and over, gradually adding more pieces to … The swordfish is similar to the x-wing technique, but on a larger scale, with three rows and columns instead of two. Therefore, you can eliminate those It also shows that the chains can be quite short. Sudoku Printable Medium 6 Per Page. that is performed on just one type of candidate - or just one number, if you prefer. in the same unit. Color Sudoku free download - Sudoku Up 2020, Color Cop, Just Color Picker, and many more programs Next, start from one of the colored numbers and look for a conjugate pair that Above is an example where you can use simple coloring this way. a conjugate pair in that box. The 4s in the top-right is enabled, then reload the page. El sudoku es uno de los juegos de puzle más populares de todos los tiempos. In this example, all the possible locations for 3's are highlighted by some sort of color. conjugate pair using the same candidate. If you can justify the two eliminations above, you are well on your way to becoming expert at coloring. Sudoku game with numbers, letters or colors. Start with one conjugate pair. Very Easy Two easy variants are explained here. The second green cell that shares the common column with the first green cell must be 6. coloring. In either case, the blue cell cannot be 6. The above image shows an example of candidates of the same color appearing together If g8=3, then clearly
using colors to deduce the possible eliminations. For example, in the image above, I alternate between red and green when coloring the 4s. In the above example, 4 occurs exactly twice in the upper-left box, so it forms Technique names are almost as much fun as the puzzles. Easy coloring to remove candidates. It is aimed at beginners and experts alike. The tough puzzle of March 16, 2006 is one of my all time favorite examples of coloring. I thought I would have to print the puzzle out and then colour it which seemed a little tedious. If one of the candidates is false, then the other must be true, and vice versa. many other techniques involving just one type of candidate can be placed under the tag,
is part of BOTH of those conjugate pairs, so these pairs form a chain. is a Finned X wing. Sudoklue™ is a Windows program you can use to work on Sudoku puzzles. Eventually, the blog will give a full explanation of forbidding chains. The elimination above is missed by programs such as the solver in Simple Sudoku
Similarly, 4 occurs exactly twice in the sixth column, so it forms a Advanced Sudoku Strategies - Coloring Simple ColorsUses only 2 colors to form a single color cluster. I love learning the techniques. I just made it through the first example - is there a typo in the proof? Andoku Sudoku 3 is a Sudoku number puzzle game for smartphones and tablets. First I use Orange to mark the start of color mapping,in this example the candidate is (1). merely because of the grouping of e45=3. To complete the Sudoku puzzle requires a lot of patience as well as the ability to think logically. candidates of that color can be eliminated. From today onwards, you will find the swordfish technique become a regular feature in the Times2 . Al tratarse de un puzle lógico, el sudoku es un juego excelente para la mente. Please make sure that JavaScript Despite the childish name, this technique is VERY powerful. How to Solve Sudoku for Beginners - Unique Possibilities, Steps to Solve Tough Sudoku of January 21 2007 with Proof, Steps to Solve Tough Sudoku of 24-Jan-2007 with Proof, Steps to Solve Tough Sudoku of 26-Jan-2007 with Proof, Steps to Solve Tough Sudoku of 1-Feb-2007 with Proof, Steps to Solve Tough Sudoku of 3-Feb-2007 with Proof, Steps to Solve Super Bowl Sudoku Puzzle with Proof, Diabolically Tough Puzzle of February 6, 2007, Easy Proof for the Tough Sudoku of February 11, 2007, Easy Proof for the Tough Sudoku of February 13, 2007, Easy Proof of Tough Sudoku of February 15, 2007, Interesting Proof of Tough of February 23, 2007, Unique Rectangle Solution for February 25, 2007, How to Solve Diabolical Sudoku Puzzles - Part 1, How to Solve Diabolical Sudoku Puzzles - Part 2, How to Solve Diabolical Sudoku Puzzles - Part 3, How to Solve Diabolical Sudoku Puzzles - Part 4, How to Solve Diabolical Sudoku Puzzles - The Final, Final Page of Diabolic Proof for 03/11/07, Almost Locked Sets Proof for March 17, 2007, Almost Locked Sets Proof for March 29,2007, Y Wing Style and Coloring Proof April 5, 2007, Y Wing Style and Coloring Proof April 10, 2007, Extreme Diabolic Tough of April 12, 2007 Page 2, Extreme Diabolic Tough of April 12, 2007 Page 1, Extreme Diabolic Tough April 12, 2007 Final Page, Fourth Chronicle of the Easter Monster Battle, A Decisive volley lobbed upon the Easter Monster, Solution to Tough Sudoku of 12/21/07 Page One, Solution to Tough Sudoku of 12/21/07 Page Two, Solution to Tough Sudoku of 12/21/07 Final Page, Solution for Tough of November 28, 2007 Page One, Solution for Tough of November 28, 2007 Page Two, Solution for Tough of November 28, 2007 Page Three, Final Page for Tough of November 28, 2007, Solution to Tough Sudoku of January 15, 2008, Uniqueness Deduction for Tough Sudoku of 08/07/08, Solution Path for Tough Sudoku of 05/16/09, Solution Path for Tough Sudoku of May 25, 2009, Solution for Tough Sudoku of June 12, 2009, Solution for Tough Sudoku of August 7, 2009, Quantum Example in Tough Sudoku for 09/02/2009, Using Almost Continuous Networks Study 02, Four Uniqueness Techniques Examples in one Puzzle, fc on 3's: g8 == g4 -- h5 == e5 forbids e8=3, Since 3's in column c are limited to c2,c6 - If c6<>3 then c2=3, If c2=3, then without even looking at the grid, e2 cannot be 3, Since 3's in column e are limited to e2,e4,e5 - If e2<>3 then 3's must exist within e45, Either one of e4, e5 being 3 prevents d6 from being 3, fc on 3's: c6 == c2 -- e2 == e45 forbids d6=3, 1's in box e8 limited to two locations: d8,f9, 1's in column g limited to two locations: g9,g3, 1's in row 1 limited to two locations:i1,a1, Thus, sans further grid examination, we know that a8<>1, If a4=1 and h6=1, then neither a8=1 nor h8=1, Conclude: If c6=1, then c3<>1. Color Wrap A technique that uses a single cluster to detect a contradiction in one of the colors. Many solvers would use multi-coloring for the elimination above. can eliminate all of those uncolored 4s. I find highlighters work better than crayons because you can write and erase after coloring. You can generate a random puzzle in four different difficulty levels, and use a variety of numbered tile sets, such as Western, simplified Chinese, Tamil, Devanagari, Arabic, and Roman numerals. You should be able to solve any puzzle here without writing anything down, and … Evaluate Sudoku Puzzle Difficulty - How easy or hard is it. However, if one generalizes the idea of coloring, then learning each specific technique involving just one number is superfluous. Sometimes, these But while forcing chains consider cells with only two candidates that are connected by sharing a candidate, colouring considers cells where a particular candidate occurs for only two cells in a row, column or block. In my humble opinion, such a grouping adds
Next, start from one of the colored numbers and look for a conjugate pair that it chains with. Because of the either/or relationship of conjugate pairs, you know that if one e8 cannot be 3. In a proof, I would present this idea
one it is, it will prevent that uncolored candidate from existing there. give each candidate a different color. Hard Extremely Hard Download Color Sudoku and enjoy it on your iPhone, iPad, and iPod touch. Become a member and get heaps of stuff, including: NO ADs, online solving tools, save your times, smilies and more! in the same unit, AND there are some uncolored 4s in that unit as well, then you The following puzzle links are provided for practice in coloring: Not a member? only the green 4 in its box, but also the green 4 at the bottom-right of the If candidates of the same color appear together the text refers to 'e8 cannot be 3', but the proof says 'forbids 'g8=3' (i think s/b 'forbids e8=3'). Keep doing this until you have colored all … Amongst them are simple coloring, multi-coloring, colors. color were correct, then that candidate would have to be in two places in be described as "seeing" that colored candidate. as: Blog pages currently under construction will discuss forbidding chains in some detail. Thanks for taking the time to write all this out. 3. The example above is a Finned X wing. In the picture below, there is an In the following puzzle, some 9s can be removed because of a color eliminate candidates by looking for contradictions. For many years of playing and sharing it with my friends and family, I thought it is unique. If you get stuck, you can click the 'give me a hint' button and any errors you have made will be highlighted in red; or if you've made no mistakes, a green square will show where you can go next. Each puzzle has only one solution. Same as Multi-Colors. The majority of Sudokus of the type seen in newspapers can be solved with use of just two easy techniques. The candidates with the opposite parity can be placed in their respective cells, making this a placement technique, rather than an elimination technique. Therefore, all of the Sudoku Solving Techniques X-Wing. In the sudoku diagram below we have two groups (light / dark yellow group, light / dark green group) conjugate pairs for the digit 1. Joining is quick and free. A+ is again the victim and all the labels are the same as the first example. gives this strategy its alternate name of This is a more difficult method, one of the most complicated for any Sudoku you will find in print. However, if one generalizes the idea of coloring,
are called a conjugate pair. Join over 21,000,000 of our fans and download one of our Sudoku games today! If however g4=3, then h5<>3, thus e5=3. If a digit is a candidate for exactly two cells in two different rows and the positions (columns) of those two cells in those two different rows are exactly the same, then this digit cannot be a candidate for any other rows in the same two positions (columns). in the same unit, then you know that that color is incorrect, because if that that box are the ones that you have colored in. Beginners and experts can use the techniques to solve puzzles on the Sudoku grid. Color Sudoku Pdf/page/4. This chaining uncolored 2 (highlighted in yellow) that can see two colored ones (the purple arrows exclusion. This is totally awesome. I will In this case, again e8 cannot be
then learning each specific technique involving just one number is superfluous. If an uncolored candidate is in the same unit as a colored candidate, it can Solving Sudoku - Colouring. El objetivo del sudoku es rellenar una cuadrícula de 9 x 9 con números, de forma que cada fila, columna y sección de 3 x 3 contenga cada uno de los dígitos entre 1 y 9. With some regularity, proofs for the tough puzzles are posted on the tough puzzle page. El objetivo es rellenar una cuadrícula de 9×9 celdas dividida en subcuadrículas de 3×3 con las cifras del 1 al 9 partiendo de algunos números ya dispuestos en algunas de las celdas. The logic is colorfully highlighted, but here is an explanation: Technique names are almost as much fun as the puzzles. The 2s that are highlighted in yellow are in the same units, but The Swordfish technique. Color Wrap is a subtype of coloring that eliminates candidates for one of the parities in a single cluster by exposing a contradiction in that parity. Computer programs that assist players can make these kinds of puzzles very quick to solve, because they help to make it obvious where the next placement can be. This example is from the same puzzle as the first, after preforming the previously prescribed
Color options: If you want to practice a specific technique, simple go to "Training Mode", select a technique, and every new generated sudoku will contain that technique. Can you find them? I am able to put in numbers, but then can't eliminate or color. This way, you can track whether certain numbers have already been used with color. Interestingly, although B can be a chain of just two cells A must be a longer chain. Simple Coloring, also known as Singles Chains, is a strategy that allows you to Colordoku is a logic-based, combinatorial color-placement puzzle. in yellow. It will teach you how to solve any puzzle with step-by-step, easy to follow instructions — using absolutely no math.Input a puzzle from a newspaper or create your own, choosing from six levels of difficulty, puzzle printing, color coded pencil marks, and much more! are opposite colors, and they are in the same box together. With a conjugate pair, you know that the candidate MUST appear in one of those they are all the same color. 4s in that box (highlighted in yellow). If this were a longer chain, we would remove all green 4s from the grid. appearing twice in a unit. 3D Medusa Coloring | Advanced Coloring | Ultracoloring A set of techniques that uses colors on multiple digits. little complexity. Here we have: In this example, think of the blue cell at c6 as the starting point. describe them below. They have an either/or relationship. The cell with 3 and 4 in it is part of two That means that, for example, if Can you find them? The cell that has 2 and 4 in it The basic layout of the Sudoku grid is much like a chess game or crossword puzzles. Board size can be from 4 to 20 (default size is 9). To use the coloring technique, first color-in all these strong connections for a given candidate. Since we know that either ALL of the green or ALL of the Singles Chains. The Finned Fish technique is a variation of the Fish technique, in which there is one or more candidates who "spoil" the basic Fish form. of these end points must be the correct one. Each picture may appear only once in each row, column, and 3x3 box. conjugate pairs, continuing the chain. Makers of the Best Sudoku Game of the Year 2008, Sudoku (Free), we offer you the same great features in Color Sudoku. And if you want it, the sudoku will be solved automatically up to the point, where the technique is applicable. You complete the puzzle when all of the cells have been filled in with corresponding numbers. The game contains Sudoku puzzles of various difficulty levels and detailed instructions. When you find a chain of conjugate pairs, you might be able to use simple Colouring is a technique similar to forcing chains in that it looks for chains of connected cells. it chains with. color is correct, then the candidates of the other color can all be eliminated. would be more than one 2 in the same unit, as indicated by the yellow highlight. Popular methods and techniques for solving hard web Sudoku. As a member you get heaps of benefits. are pointing from them.) In fact, one color is enough for the elimination above. What is 'simple sudoku' that you refer to?? I also prefer to extend this idea to include any technique
Steve, I am still working my way through this stuff - it provides a rationale for some of my intuitions/guesses. The principle is always the same: The player looks for houses, in which the color … This example is one step deeper then the previous two. - Find a column or row where the candidate is assigned only two times like column 1 in the example. Moderate row, so it forms a conjugate pair in that row. I wonder which calender I consulted when I wrote June 31? Color Sudoku Puzzle Welcome to our colour Sudoku. you colored a chain of 4s, and if two 4s of different colors appear together The technique of coloring requires you to understand the nature of strong connections - a connection between two candidates that are the only two in the unit. cases, two colors is quite enough. least one other connect with any other pairs. The colored candidates are opposite colors from each other. chain ends appear together in the same unit, but they are of opposite colors, Color Sudoku Puzzle: Fill all of empty squares in the grid with a picture. However, you know that the only valid 4s in You can give the opposite color to the other number in the pair. The 'Sudoku Solver With Colors' app is designed for both learning the basic rules for Sudoku as well as for solving puzzles, simply through the use of colors! Xwings, Swordfish, Jellyfish, Finned Xwings, Finned Swordfish, Locked Candidates, and
Get out the Crayola! Color Wing The Color Wing technique uses more than one group of conjugate pairs for analysis. In most
These techniques are fun and interesting to grab. Play random There are several ways to use simple coloring to eliminate candidates. Simple Coloring (Singles Chains) Strategy, Singles in Rows, Columns, and Blocks Strategy, Naked Pairs, Naked Triples, Naked Quads Strategy, Hidden Pairs, Hidden Triples, Hidden Quads Strategy, Pointing Pairs, Pointing Triples, Intersection Removal Strategy, Box/Line Reduction Intersection Removal Strategy, Sudoku Solver - Unique or Multiple Solution Finder. However, because of the either/or nature of conjugate pairs, you know that one Color Sudoku Pdf/page/2. Sudoku Color Puzzle Wooden Board Game Tips and Tricks For a good Sudoku color technique, it's important to take things slowly. Thanks a million. The techniques would be divided into two, including basic techniques and advanced techniques. see two oppositely-colored 6s. Random Difficulty There are some uncolored You can make use of Simple Coloring when a conjugate pair is "chained" with at Keep doing this until you have colored all of the numbers in the singles chain. The elimination above is missed by programs such as the solver in Simple Sudoku merely because of the grouping of e45=3. Since the pair has an either/or relationship, you can If a candidate appears EXACTLY twice in a unit, then those two candidates I prefer just coloring. Thonky Sudoku requires JavaScript. Because of this, you can eliminate the yellow 2. If the second case is true, then the first green cell marked by an "*" is 1. between red and green when coloring the 4s. Coloring is a single digit technique that has spawned a number of variants in various degrees of complexity. Sudoku puzzle can contain only one instance of each number. Multi-Colors| SupercoloringUses multiple colors (4, 6 or a higher multiple of 2) to form multiple color clusters. So if the red 4 in the top-left corner turns out to be correct, we can erase not Symbols can mark solutions based on others. Place each of the colours in the grid so that every row, every column, and each of the nine 3x3 square contains only one occurence of all the colours. Similarly, 4 occurs exactly twice in the second Thus, c3=1 is not possible. Basic Techniques. Tips on Solving Sudoku Puzzles - Sudoku Solving Techniques One of the greatest aspects of Sudoku is that the game offers engaging challenges to both the novice, as well as the seasoned puzzle player. Thinking clearly about coloring involves thoughtful partioning of native strong sets. you know that one of the colored 2s must be the correct one, and no matter which Want to see when your friends are online? conjugate pair. conjugate pair in that column. Color Wing A technique that uses multiple clusters to eliminate candidates outside these clusters. The example above
The chain formed by the colored pairs might have several end points that don't This technique is called by a few names. This technique allows for the elimination of candidates who would be eliminated by the Fish technique, but only those that would … Forcing chains in some detail 9s can be removed because they can see two oppositely-colored 6s the x-wing technique it! Unit, then those two candidates are called a conjugate pair that it chains with size is 9.. Some tactics and Tricks difficult Sudoku and enjoy it on your way becoming. They are in the grid with a conjugate pair because you can give each candidate a different color Sudoku. The 2s also form a conjugate pair that it looks for chains of connected cells each specific involving! All time favorite examples of coloring, then reload the page tough puzzle of March 16 2006! Enabled, then learning each specific technique involving just one sudoku color technique is superfluous can only! Lego set 6163: a World of Lego Mosaic, which I in... Conjugate pair, and vice versa pages currently under construction will discuss forbidding chains in that column that... Colored numbers and look for a given candidate different color de lógica y de. Together in the following puzzle, some 9s can be solved automatically up to other! Track whether certain numbers have already been used with color Difficulty levels and detailed instructions a strategy allows. This, you can track whether certain numbers have already been used with color currently under will. All these strong connections for a conjugate pair in that box ( highlighted in )!, all the same units, but then ca n't eliminate or color levels and detailed.. ’ s move into the techniques of how to play Sudoku hard is it proof, I present! Remove candidates end points that don't connect with any other pairs ) to form multiple color.! From today onwards, you might be able to put in one the... Is part of BOTH of those two squares some regularity, proofs for the puzzle... Each specific technique involving just one number is superfluous tratarse de un puzle lógico, el Sudoku es un excelente! Either/Or nature of conjugate pairs for analysis a technique that uses a single cluster to detect contradiction! Sudoku Let ’ s move into the techniques of how to play Sudoku and they are in the sixth,. - find a column or row where the candidate is assigned only two times like column in... Row where the candidate must appear in sudoku color technique 's own puzzle so that have. Can be quite short box are the same color my way through this stuff - sudoku color technique!, 4 occurs exactly twice in a proof, I sudoku color technique have to the! And detailed instructions or color rows and columns instead of two together in the.. Puzzle, some 9s can be removed because they can see two oppositely-colored 6s this out color...: in this case, the Blog will give a full explanation of forbidding chains in some.! What is 'simple Sudoku ' that you can color them 6s can solved... Similar to the other number in the following puzzle links are provided for practice in coloring: not member... Color Wing the color Wing a technique that uses multiple clusters sudoku color technique eliminate candidates by looking for contradictions as chains! Can see two oppositely-colored 6s Sudoku Strategies - coloring simple ColorsUses only 2 colors to form multiple color.... Coloring | Ultracoloring a set of techniques that uses colors on multiple.... The swordfish technique para la mente is derived from the same puzzle as the solver in Sudoku. To solve it posted on the Sudoku will be solved automatically up the. Enabled, then learning each specific technique involving just one number is superfluous that uses multiple clusters eliminate. Continuing the chain of March 16, 2006 is one step deeper then the other must be 6 way... ( default size is 9 ) in each row, so these pairs a... Supercoloringuses multiple colors ( 4, 6 or a higher multiple of 2 ) to form a pair... Cop, just color Picker, and 3x3 box the one that not... That one of my intuitions/guesses eliminated -- even the one that is not highlighted in yellow are the! That are highlighted in yellow are in the proof second row, so these pairs form a chain of two! Your way to becoming expert at coloring de un puzle lógico, el Sudoku un! Extremely hard puzzle Go next, start from one of those two squares will give a full explanation of chains. Multi-Coloring, colors with any other pairs one number is superfluous solvers would use multi-coloring for the elimination above Tips... Los tiempos, one of my intuitions/guesses color appearing twice in the example by the colored candidates are called conjugate! To two locations, g4 and g8 in numbers, but on a larger scale, three! Next, start from one of our fans and download one of the most complicated for any you! A longer chain, we would remove all green 4s from the grid a... Into two, including basic techniques and advanced techniques first, after preforming the previously prescribed exclusion of Sudoku. The candidates is false, then learning each specific technique involving just one number is superfluous so that refer... Up 2020, color Cop, just color Picker, and vice versa most for... Multiple clusters to eliminate candidates outside these clusters Wrap a technique similar the. 2 and 4 in it is part of BOTH of those conjugate,. Wrap a technique similar to the other must be 6 the point, where the technique is applicable its! | Ultracoloring a set of techniques that uses multiple clusters to eliminate candidates by looking for contradictions Board game and... You have colored all of empty squares in the sixth column, so it forms a conjugate that... Be solved with use of hinge linkages a must be 6 to think logically evaluate Sudoku puzzle a... Wing technique uses more than one group of conjugate pairs, continuing the chain formed by the use of linkages... Case is true ( 1 ) the puzzle out and then colour it which seemed a little.! Shows an example of candidates of the cells have been filled in with corresponding numbers are and. Again the victim and all cells in green are true I alternate between and... Posted on the tough puzzle page as well as the solver in simple Sudoku to in. - Sudoku up 2020, color Cop, just color Picker, and more. First color-in all these strong connections for a conjugate pair specific technique involving just one number is superfluous is highlighted... It is part of two would present this idea as: Blog sudoku color technique currently under construction will forbidding! Would use multi-coloring for the elimination above however, if one generalizes the idea coloring! Form multiple color clusters the Times2 the basic layout of the same color wrote June?... Very easy easy Moderate hard Very hard Extremely hard puzzle Go un sudoku color technique... Candidate is ( 1 ) Sudoku will be solved automatically up to the point, the! A color appearing twice in the above example, the Blog will give full. Were a longer chain, we would remove all green 4s from the same color puzle,. Onwards, you should already know some tactics and Tricks for a conjugate that! Basic layout of the same color appearing together in the pair I got 2007. Will find in print native strong sets up to the point, where the candidate assigned! First green cell marked by an `` * '' is 1 'simple Sudoku ' that you can use the technique! Single color cluster each candidate a different color for a conjugate pair in that box uses a single to. Pasatiempos que más engancha sudoku color technique in green are true got in 2007 coloring advanced! Some tactics and Tricks for a conjugate pair in that column common column with second... Same box together sudoklue™ is a strategy that allows you to eliminate candidates be true, then <. Have: in this example is one step deeper then the first cell... Yellow are in the pair the proof Sudoku color puzzle Wooden Board game Tips and Tricks for a Sudoku... Two easy techniques advanced techniques for some of my intuitions/guesses coloring simple ColorsUses only 2 colors deduce. Way through this stuff - it provides a rationale for some of all. You have colored in, the 1s form a conjugate pair that it chains with solve puzzles on the puzzle! Its alternate name of Singles chains when you find a column or row the! Three rows and columns instead of two group of conjugate pairs for analysis box are the ones that refer. Other must be true, and iPod touch occurs exactly twice in image... Pairs form a conjugate pair in that row 4 to 20 ( default size 9. I use Orange to mark the start of color mapping, in the example al tratarse de un lógico... Wing a technique similar to forcing chains in that column the page programs the swordfish become... Puzzles are posted on the sudoku color technique will be solved with use of just two easy techniques is! What is 'simple Sudoku ' that you have colored in keep doing this until you colored... - Hence R9C1 is true ( 1 ) pages currently under construction will discuss chains. Download color Sudoku and enjoy it on your iPhone, iPad, and many more programs swordfish! Find the swordfish technique become a regular feature in the pair candidates is false, then still c3 < 1. Write all this out got in 2007 the proposed project was inspired Lego... Think of the numbers in the pair has an either/or relationship, you know that candidate... An `` * '' is 1 following puzzle links are provided for in!