Easy sudoku app10/31/2023 Also take a look at first 3x3 unit, you can easily spot that 2 can only be placed in cell B1, it is hidden single. Now you can easily spot naked singles 5 in cell C3, 6 in cell G2, 7 in cell H2 and 9 in cell G7. thesudoku.app «autofill» feature will do it for you, just open «three dots» menu and click «Autofill notes» Filling in all the pencil marks for every cell is quite a laborious task. Want to learn to solve sudoku puzzles in minutes Sudoku Plus has a wide range of difficulty settings and solving tools to help you build your solving skills. Pencil marks represents remaining candidates in each cell. Filling «pencil marks» will definitely help you to solve any sudoku puzzle. Track your progress with onboard statistics and unlock fun achievements along the way. Sometimes hidden and naked singles are not so easy to spot. Starting and keeping a daily habit of mental exercise is easy by playing Sudoku’s Daily Puzzles, which are sure to keep your mind sharp and at ease. Naked single Solve puzzle from the Figure 4 Using «autofill» feature thesudoku.app This means that the last remaining candidate for cell B3 is 1. This fact eliminates these digits from cell B3. Take a look at the highlighted 3x3 unit, remaining digits to fill this unit are 1, 2 and 3. In other words, a single becomes «naked» when all other candidates have been eliminated from its cell. Hidden single in a column Solve puzzle from the Figure 3 Naked singlesĪ «naked single» is the last remaining candidate in a cell. This means that the only candidate for cell H4 in column 4 is digit 1. Then take a look at highlighted 3x3 unit and highlighted rows C and I, each contains digit 1. Hidden single in a row Solve puzzle from the Figure 2 Hidden single in a column This means that the only candidate for cell F4 in row F is digit 1. Then take a look at the 3x3 unit and highlighted column 6, each contains digit 1. Multiple difficulty levels from very easy to extremely hard Puzzle library. Hidden single in 3x3 unit Solve puzzle from the Figure 1 Hidden single in a row Top Sudoku app in Japan Play six different Sudoku variations in a single app. This means that the only candidate for cell C3 is digit 3. Then take a look at row B and column 1, each contains digit 3. In other words, only one cell is left to place that candidate. Hidden singlesĪ «hidden single» is a single candidate remaining for entire row, column or 3x3 unit. To solve easy sudoku puzzles thesudoku.app, you will need to use only «singles» technique, the most elementary solving technique. Those are tough to find! Also, sometimes the 2-2-2 type Swordfish can be really tricky to find in a puzzle.Easy sudoku puzzles thesudoku.app Easy sudoku puzzles thesudoku.app Especially when there's a 2-2-2-2 Naked Quad wrapping a 2-2-2 Hidden Triple. My record on this level one minute 58 seconds. With "Hard" level on Andoku 3 you need to be an expert in X-Chains, Naked Quads, XY-Wings, and Swordfish. Sudoku Sudoku 6,215 easy Observer killer sudoku Observer sudoku Sudoku 6,214 expert Killer sudoku 884 Sudoku 6,211 hard Sudoku 6,210 hard Sudoku 6,209. Hodoku considers a Sashimi X-Wing as "Hard" which most other sources would consider it as "Extreme."ĪIC Nice Loops and XY-Chains make it extreme. And Hodoku's hard level puzzles would be classified as extreme in other sources. Many people would characterized Hodoku's medium puzzles as hard puzzles. For example, on Hodoku, medium puzzles can require hidden pairs and hidden triples. What defines a puzzle's difficulty level are the puzzling solving techniques needed to solve it. I think labeling a puzzle's difficulty level is completely the wrong approach. What is considered easy, medium, hard, and extreme is not consistent.
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