This is an example of an easy Suko starting grid, and we can immediately see that there are a couple of numbers we can insert. Suko is a Trademark owned by Jai Kobayaashi Gomer of Kobayaashi Studios. Suko is a Trademark owned by Jai Kobayaashi Gomer of Kobayaashi Studios. The total for the top-left quadrant is 23, and the total for the blue. This is an example of an easy Suko starting grid, and we can immediately see that there are a couple of numbers we can insert. Find the latest concise and cryptic games including Quintagram here. The original design and puzzle format was also created by Jai. The objective is to fill a nine-by-nine (9x9) grid with digits so that each row, column and 3x3 section contain number between 1 and 9, with each number. The original design and puzzle format was also created by Jai. Suko is a Trademark owned by Jai Kobayaashi Gomer of Kobayaashi Studios. Read our complete guide to Suko and get up to speed on the rules and the history of the puzzle, as well as expert playing tips and more. The original design and puzzle format was also created by Jai. The blue cells should add to 20 (8+3+9). Your aim is to insert the numbers 1-9 in to the grid so that each number only appears once, and all the totals are satisfied. Includes Crossword, Quick Cross, & Sudoku. If you started with easy Sudoku, you will soon realize that you have become too quick to deal with these puzzles and want more! At this point, you can move to medium. The original design and puzzle format was also created by Jai. The Wall Street Journal. The total for the top-left quadrant is 23, and the total for the blue cells is 14. Play medium Sudoku puzzles online on Sudoku. . Fantastic!. Four levels from Easy to Evil. Choose from easy, medium, hard, or very hard level of difficulty. This type of sujiko puzzle also has colour coded groups of numbers just to make it more interesting. You can also choose your difficulty and page title. The total for the top-left quadrant is 23, and the total for the blue. Suko is a Trademark owned by Jai Kobayaashi Gomer of Kobayaashi Studios. The total for the top-left quadrant is 23, and the total for the blue. Suko is a Trademark owned by Jai Kobayaashi Gomer of Kobayaashi. Fill a 9x9 grid with numbers from 1 to 9, following the rules of logic and concentration. With the numbers left, we can only do that using the 1 and the 5. The original design and puzzle format was also created by Jai. This is an example of an easy Suko starting grid, and we can immediately see that there are a couple of numbers we can insert. Suko is a Trademark owned by Jai Kobayaashi Gomer of Kobayaashi. Some tips for solving Sudoku:. The original design and puzzle format was also created by Jai. Suko is a Trademark owned by Jai Kobayaashi Gomer of Kobayaashi. Does it. The total for the top-left quadrant is 23, and the total for the blue. All rights reserved. Login. Suko . This is an example of an easy Suko starting grid, and we can immediately see that there are a couple of numbers we can insert. This is an example of an easy Suko starting grid, and we can immediately see that there are a couple of numbers we can insert. The total for the top-left quadrant is 23, and the total for the blue cells is 14. Suko is a Trademark owned by Jai Kobayaashi Gomer of Kobayaashi Studios. Choose from classic, squiggly or kids puzzle books, each with 40 unique and graded puzzles. Login. Suko is a Trademark owned by Jai Kobayaashi Gomer of Kobayaashi Studios. The red cells should add to 16 (6+1+4+5). They are ranked by a difficulty level which corresponds with how many numbers come pre-filled in the puzzle. The original design and puzzle format was also created by Jai. The original design and puzzle format was also created by Jai. For trickier puzzles, click Options to turn on pencil marks. From this puzzle, we can see that, The green cells should add to 9 (2+7). Fantastic!. The original design and puzzle format was also created by Jai. Suko is a Trademark owned by Jai Kobayaashi Gomer of Kobayaashi Studios. Larger or smaller? You decide . Suko is a Trademark owned by Jai Kobayaashi Gomer of Kobayaashi Studios. Suko is a Trademark owned by Jai Kobayaashi Gomer of Kobayaashi Studios. The total for the top-left quadrant is 23, and the total for the blue cells is 14. View All Puzzles & Games. Suko is a Trademark owned by Jai Kobayaashi Gomer of Kobayaashi Studios. Suko is a Trademark owned by Jai Kobayaashi Gomer of Kobayaashi Studios. Medium Sudoku is a logic puzzle which is harder than an easy one and requires certain tactics to solve it. Suko is a Trademark owned by Jai Kobayaashi Gomer of Kobayaashi Studios. Suko is a Trademark owned by Jai Kobayaashi Gomer of Kobayaashi Studios. Suko is a Trademark owned by Jai Kobayaashi Gomer of Kobayaashi Studios. This is an example of an easy Suko starting grid, and we can immediately see that there are a couple of numbers we can insert. The original design and puzzle format was also created by Jai. Futoshiki. This is an example of an easy Suko starting grid, and we can immediately see that there are a couple of numbers we can insert. This is an example of an easy Suko starting grid, and we can immediately see that there are a couple of numbers we can insert. The original design and puzzle format was also created by Jai. Compatible with all browsers, tablets and phones including iPhone, iPad and Android. The blue cells should add to 20 (8+3+9). This is an example of an easy Suko starting grid, and we can immediately see that there are a couple of numbers we can insert. The total for the top-left quadrant is 23, and the total for the blue. Suko is a Trademark owned by Jai Kobayaashi Gomer of Kobayaashi Studios. This is an example of an easy Suko starting grid, and we can immediately see that there are a couple of numbers we can insert. The original design and puzzle format was also created by Jai. Suko is a Trademark owned by Jai Kobayaashi Gomer of Kobayaashi Studios. Each sub-region must contain the numbers 1-9 once, and only once. The total for the top-left quadrant is 23, and the total for the blue. This is an example of an easy Suko starting grid, and we can immediately see that there are a couple of numbers we can insert. Suko is a Trademark owned by Jai Kobayaashi Gomer of Kobayaashi Studios. Fill a 9x9 grid with numbers from 1 to 9, following the rules of logic and concentration. Suko is a Trademark owned by Jai Kobayaashi Gomer of Kobayaashi Studios. The original design and puzzle format was also created by Jai. This is an example of an easy Suko starting grid, and we can immediately see that there are a couple of numbers we can insert. Choose from easy to expert levels and enjoy this free online game. Suko is a Trademark owned by Jai Kobayaashi Gomer of Kobayaashi. Login. Created in 2010, Suko was the second of the puzzles created by Kobayaashi Studios to feature in the puzzle pages of national newspapers. Sudoku can help kids learn critical thinking and logic skills, but the standard puzzles can be a difficult place to start. The blue cells should add to 20 (8+3+9). There were particularly popular around one hundred years ago when matches were widely available as many people smoked. This is an example of an easy Suko starting grid, and we can immediately see that there are a couple of numbers we can insert. No number neighbors! Suguru . The total for the top-left quadrant is 23, and the total for the blue. The blue cells should add to 20 (8+3+9). This is an example of an easy Suko starting grid, and we can immediately see that there are a couple of numbers we can insert. The total for the top-left quadrant is 23, and the total for the blue cells is 14. Suko is a Trademark owned by Jai Kobayaashi Gomer of Kobayaashi Studios. The original design and puzzle format was also created by Jai. The original design and puzzle format was also created by Jai. For trickier puzzles, click Options to turn on pencil marks. Fantastic!. This is an example of an easy Suko starting grid, and we can immediately see that there are a couple of numbers we can insert. Additional stat-tracking. From this puzzle, we can see that, The green cells should add to 9 (2+7). This is an example of an easy Suko starting grid, and we can immediately see that there are a couple of numbers we can insert. Suko is a Trademark owned by Jai Kobayaashi Gomer of Kobayaashi Studios. The total for the top-left quadrant is 23, and the total for the blue. Suko is a Trademark owned by Jai Kobayaashi Gomer of Kobayaashi Studios. Its compact design makes it ideal for playing on the go. This is an example of an easy Suko starting grid, and we can immediately see that there are a couple of numbers we can insert. We have almost solved this Suko puzzle now. This is an example of an easy Suko starting grid, and we can immediately see that there are a couple of numbers we can insert. 16x16 puzzles need 0 to 9, and the letters A to F. The total for the top-left quadrant is 23, and the total for the blue. Our daily medium difficulty web sudoku puzzles are. The original design and puzzle format was also created by Jai. Fantastic!. The total for the top-left quadrant is 23, and the total for the blue. Suko is a Trademark owned by Jai Kobayaashi Gomer of Kobayaashi. Useful tips and hints on the website will help You to. This is an example of an easy Suko starting grid, and we can immediately see that there are a couple of numbers we can insert. Try adding numbers which already appear often in the Sudoku puzzle. Dates in amber are puzzles you've done, but not achieved the maximum score. Beginning in the Times and the Telegraph in 2011, Suko has gone from strength to strength, and now - twelve years later - features in newspapers and magazines around the UK, and internationally. From this puzzle, we can see that, The green cells should add to 9 (2+7). The original design and puzzle format was also created by Jai. Suko is a Trademark owned by Jai Kobayaashi Gomer of Kobayaashi Studios. This is an example of an easy Suko starting grid, and we can immediately see that there are a couple of numbers we can insert. thank you for sharing this during lockdown Look for rows, columns and 3×3 boxes with just a few blanks remaining. This is an example of an easy Suko starting grid, and we can immediately see that there are a couple of numbers we can insert. This is an example of an easy Suko starting grid, and we can immediately see that there are a couple of numbers we can insert. From this puzzle, we can see that, The green cells should add to 9 (2+7). Suko is a Trademark owned by Jai Kobayaashi Gomer of Kobayaashi Studios. The original design and puzzle format was also created by Jai. Suika Game: The Watermelon Game. Suko is a Trademark owned by Jai Kobayaashi Gomer of Kobayaashi Studios. This is an example of an easy Suko starting grid, and we can immediately see that there are a couple of numbers we can insert. The red cells should add to 16 (6+1+4+5). The blue cells should add to 20 (8+3+9). The original design and puzzle format was also created by Jai. This is an example of an easy Suko starting grid, and we can immediately see that there are a couple of numbers we can insert. 5 4 1 8 2 7 4 7 6 9 2Suko is a Trademark owned by Jai Kobayaashi Gomer of Kobayaashi Studios. Compatible with all browsers, tablets and phones including iPhone, iPad and Android. . This is an example of an easy Suko starting grid, and we can immediately see that there are a couple of numbers we can insert. The original design and puzzle format was also created by Jai. The total for the top-left quadrant is 23, and the total for the blue. This is an example of an easy Suko starting grid, and we can immediately see that there are a couple of numbers we can insert. The original design and puzzle format was also created by Jai. Useful tips and hints on the website will help You to understand the essence of game and quickly cope with the puzzle. That way, you have a starting point from which you can figure out where other numbers go. The original design and puzzle format was also created by Jai. This is an example of an easy Suko starting grid, and we can immediately see that there are a couple of numbers we can insert. The original design and puzzle format was also created by Jai. This is an example of an easy Suko starting grid, and we can immediately see that there are a couple of numbers we can insert. The puzzles in this page are rated "Very difficult" (). Suko is a Trademark owned by Jai Kobayaashi Gomer of Kobayaashi. This is an example of an easy Suko starting grid, and we can immediately see that there are a couple of numbers we can insert. Login. This is an example of an easy Suko starting grid, and we can immediately see that there are a couple of numbers we can insert. Sudoku is a game of logic and strategy, where you have to fill in the blank squares with numbers from 1-9 in order to complete the puzzle. No ads. The original design and puzzle format was also created by Jai. The total for the top-left quadrant is 23, and the total for the blue cells is 14. Piece together an artwork with family and friends. Suko is a Trademark owned by Jai Kobayaashi Gomer of Kobayaashi Studios. Quick Play Tips: Please click "How to Play" from main menu. Login. An introduction to the Suko number puzzle, created by Kobayaashi Studios. The red cells should add to 16 (6+1+4+5). Sudoku for Kids. Suika Game, also known as Watermelon Game in English, is a Fruit Puzzle or Tetris game. This is an example of an easy Suko starting grid, and we can immediately see that there are a couple of numbers we can insert. This is an example of an easy Suko starting grid, and we can immediately see that there are a couple of numbers we can insert. Suko is a Trademark owned by Jai Kobayaashi Gomer of Kobayaashi Studios. Not 30mins as suggested)Sudoku Puzzle #6 LEVEL: Medium Answer © Trusted Media Brands, Inc. This is an example of an easy Suko starting grid, and we can immediately see that there are a couple of numbers we can insert. This is an example of an easy Suko starting grid, and we can immediately see that there are a couple of numbers we can insert. Try adding numbers which already appear often in the Sudoku puzzle. Play now . This is an example of an easy Suko starting grid, and we can immediately see that there are a couple of numbers we can insert. The original design and puzzle format was also created by Jai. Start with your first free puzzle today and challenge yourself with a new crossword daily!Play our daily Suko! Thousands more printable puzzles in the archive! Register FREE. No other duplication permitted and not for resale. Place the numbers 1 through 9 on the grid, so the numbers in squares surrounding each inner circle sum to the number in that circle, and the numbers in squares of each shade sum to the number in the outer circle of that shade. The blue cells should add to 20 (8+3+9). The total for the top-left quadrant is 23, and the total for the blue cells is 14. Suko is a Trademark owned by Jai Kobayaashi Gomer of Kobayaashi Studios. 8 views 3 days ago. You can also choose your difficulty and page title. The total for the top-left quadrant is 23, and the total for the blue cells is 14. Play our daily Suko! Thousands more printable puzzles in the archive! Register FREE. This is an example of an easy Suko starting grid, and we can immediately see that there are a couple of numbers we can insert. The original design and puzzle format was also created by Jai. The total for the top-left quadrant is 23, and the total for the blue. Suko is a Trademark owned by Jai Kobayaashi Gomer of Kobayaashi Studios. The original design and puzzle format was also created by Jai. The original design and puzzle format was also created by Jai. Very difficult sudoku puzzles to print or play online. Daily Medium Suko Puzzle Thursday 2nd March 2023. Dates in blue are puzzles you've started. The original design and puzzle format was also created by Jai. The red cells should add to 16 (6+1+4+5). Suko is a Trademark owned by Jai Kobayaashi Gomer of Kobayaashi Studios. The printable sudoku puzzles pages below are listed in order of difficulty. Daily puzzles and crosswords. Solves the cell of your choice. 26, 2022. The total for the top-left quadrant is 23, and the total for the blue. The total for the top-left quadrant is 23, and the total for the blue cells is 14. Not 30mins as suggested)Daily Suko Puzzle (Easy) Thursday 15th June 2023. The blue cells should add to 20 (8+3+9). This is an example of an easy Suko starting grid, and we can immediately see that there are a couple of numbers we can insert. Suko is a Trademark owned by Jai Kobayaashi Gomer of Kobayaashi Studios. Suko is a Trademark owned by Jai Kobayaashi Gomer of Kobayaashi Studios. Login. Play now . Suko is a Trademark owned by Jai Kobayaashi Gomer of Kobayaashi Studios. com. From this puzzle, we can see that, The green cells should add to 9 (2+7). The classic number puzzle - level 7. Suko is a Trademark owned by Jai Kobayaashi Gomer of Kobayaashi Studios. Play Now . Play Now Welcome to Puzzles & prizes Tap Next for a quick. Sudoku can help kids learn critical thinking and logic skills, but the standard puzzles can be a difficult place to start. Sudoku - level 2. This is an example of an easy Suko starting grid, and we can immediately see that there are a couple of numbers we can insert. If you started with easy Sudoku, you will soon realize that you have become too quick to deal with these puzzles and want more! When you begin a sudoku puzzle, it will always have a certain number of spaces already filled in. Feel free to print and solve as many of these sudoku. Novice Volume 5 1pp 4pp. Login. About Suko Puzzles. Suko is a Trademark owned by Jai Kobayaashi Gomer of Kobayaashi Studios. The Telegraph’s Codeword puzzles provide logical challenges for even the most patient of solver to unravel. Top-left circle holds sum of top-left four boxes (1, 2, 4, and 5)Suko is a Trademark owned by Jai Kobayaashi Gomer of Kobayaashi Studios. Sudoku X . The original design and puzzle format was also created by Jai. Suko is a Trademark owned by Jai Kobayaashi Gomer of Kobayaashi Studios. Suko is a Trademark owned by Jai Kobayaashi Gomer of Kobayaashi Studios. Suko is a Trademark owned by Jai Kobayaashi Gomer of Kobayaashi Studios. Each set of cells joined by dotted lines must add up to the target number in its top-left corner. Sudoku, Nonograms, Hashi, Network, Nurikabe, Minesweeper and more!We strive to offer puzzles for all skill levels that everyone can enjoy playing every day. WSJ Crossword November 21 2023 Answers. The original design and puzzle format was also created by Jai. Pros of playing hard web Sudoku puzzles. The original design and puzzle format was also created by Jai. This is an example of an easy Suko starting grid, and we can immediately see that there are a couple of numbers we can insert. Year: } Difficulty: } We strive to offer puzzles for all skill levels that everyone can enjoy playing every day. The original design and puzzle format was also created by Jai. Sudoku medium online - play medium level sudoku puzzles for free. The original design and puzzle format was also created by Jai. From this puzzle, we can see that, The green cells should add to 9 (2+7). Suko is a Trademark owned by Jai Kobayaashi Gomer of Kobayaashi Studios. This game uses simple addition, but has simple rules to help you. Here is the puzzle. The original design and puzzle format was also created by Jai. Suguru . * Suko (TM) * SetSquare * Dominosa * Spiral Galaxy * Hidoku * Star Battle * Kakurasu Suko is a Trademark owned by Jai Kobayaashi Gomer of Kobayaashi Studios. This is an example of an easy Suko starting grid, and we can immediately see that there are a couple of numbers we can insert. The advantages of free web difficult Sudoku puzzles are obvious. Suko is a Trademark owned by Jai Kobayaashi Gomer of Kobayaashi Studios. The blue cells should add to 20 (8+3+9). This is an example of an easy Suko starting grid, and we can immediately see that there are a couple of numbers we can insert. The total for the top-left quadrant is 23, and the total for the blue. Double click a matchstick to rotate it through 90 o or, to rotate the last stick moved: This type of puzzle has been around for many years. Suko is a Trademark owned by Jai Kobayaashi Gomer of Kobayaashi Studios. Compatible with all browsers, tablets and phones including iPhone, iPad and Android. This is an example of an easy Suko starting grid, and we can immediately see that there are a couple of numbers we can insert. This allows you to have a rest and escape from everyday routine. The red cells should add to 16 (6+1+4+5). I’ve wondered each weekend if there is a. The original design and puzzle format was also created by Jai. Placement of the digits must satisfy the puzzle's clues: Circle Clues - four circles on the grid contain the sums of their surrounding boxes. The original design and puzzle format was also created by Jai. Easy Sudoku level is perfect for beginners and children. Suko and Sujiko was originally designed and created by Jai Kobayaashi Gomer, of Kobayaashi Studios. Good luck!Suko is a Trademark owned by Jai Kobayaashi Gomer of Kobayaashi Studios. This fun logic puzzle can be played anytime and anywhere. The total for the top-left quadrant is 23, and the total for the blue cells is 14. Suko is a Trademark owned by Jai Kobayaashi Gomer of Kobayaashi. The total for the top-left quadrant is 23, and the total for the blue. Suko puzzles are similar to Sujiko puzzles, but with more clues. Click the pencil to turn the numbers into note mode and make notes inside the squares. From this puzzle, we can see that, The green cells should add to 9 (2+7). The total for the top-left quadrant is 23, and the total for the blue cells is 14. Try adding numbers which already appear often in the Sudoku puzzle. This is an example of an easy Suko starting grid, and we can immediately see that there are a couple of numbers we can insert. The original design and puzzle format was also created by Jai. No ads. This is an example of an easy Suko starting grid, and we can immediately see that there are a couple of numbers we can insert. The total for the top-left quadrant is 23, and the total for the blue cells is 14. About Sudoku puzzle game and how to play? Sudoku is one of the most popular logic-based number-placement puzzle game. There may be other methods to get. Walmart: $25 Off Walmart Promo Code | Valid on Any $50 Order. Suko is a Trademark owned by Jai Kobayaashi Gomer of Kobayaashi Studios. "The definitive modern match was born in mid-19th century by Swedish chemist Gustaf. This is an example of an easy Suko starting grid, and we can immediately see that there are a couple of numbers we can insert. The original design and puzzle format was also created by Jai. The original design and puzzle format was also created by Jai. The original design and puzzle format was also created by Jai. This means the bottom-right cell must be 2 (as it is the only number remaining unused). This is an example of an easy Suko starting grid, and we can immediately see that there are a couple of numbers we can insert. Easy Sudoku level is perfect for beginners and children. This is an example of an easy Suko starting grid, and we can immediately see that there are a couple of numbers we can insert. Here is the puzzle. Puzzle Party. Here is the puzzle. This is an example of an easy Suko starting grid, and we can immediately see that there are a couple of numbers we can insert. Quick Play Tips:Suko is a Trademark owned by Jai Kobayaashi Gomer of Kobayaashi Studios. Easy, Medium, Hard, Very Hard and Extreme Sudoku Puzzles can be played online. This is an example of an easy Suko starting grid, and we can immediately see that there are a couple of numbers we can insert. Suko is a Trademark owned by Jai Kobayaashi Gomer of Kobayaashi Studios. The same can be done for three digits. New York Times Games. This is an example of an easy Suko starting grid, and we can immediately. All of the sudoku puzzles are 9×9 grids. Suguru . Look for rows, columns and 3×3 boxes with just a few blanks remaining. Suko is a Trademark owned by Jai Kobayaashi Gomer of Kobayaashi Studios. This is an example of an easy Suko starting grid, and we can immediately see that there are a couple of numbers we can insert. It is challenging, yet fun for adults and kids alike. The red cells should add to 16 (6+1+4+5). The step-by-step shows one way to solve puzzle using only logical reasoning. Suko is a Trademark owned by Jai Kobayaashi Gomer of Kobayaashi Studios. After entering a number, check to see where else it has to go. com. Difficult puzzles. The original design and puzzle format was also created by Jai. Try the Squiggly puzzles for a slightly different feel. For trickier puzzles, click Options to turn on pencil marks. Additional stat-tracking. The blue cells should add to 20 (8+3+9). The original design and puzzle format was also created by Jai. This is an example of an easy Suko starting grid, and we can immediately see that there are a couple of numbers we can insert. Sudoku - level 3. The total for the top-left quadrant is 23, and the total for the blue cells is 14. Want more? Take a look at the Daily SuDoku E-Books. The original design and puzzle format was also created by Jai. This is an example of an easy Suko starting grid, and we can immediately see that there are a couple of numbers we can insert. Suko is a Trademark owned by Jai Kobayaashi Gomer of Kobayaashi Studios. This video introduces the game of Sudoku to the newbie. This is an example of an easy Suko starting grid, and we can immediately see that there are a couple of numbers we can insert. Suko is a Trademark owned by Jai Kobayaashi Gomer of Kobayaashi Studios. Suko is a Trademark owned by Jai Kobayaashi Gomer of Kobayaashi Studios. Suko is a Trademark owned by Jai Kobayaashi Gomer of Kobayaashi Studios. The original design and puzzle format was also created by Jai. The total for the top-left quadrant is 23, and the total for the blue. This is an example of an easy Suko starting grid, and we can immediately. The total for the top-left quadrant is 23, and the total for the blue cells is 14. Easy, Medium, Hard, Very Hard and Extreme Sudoku Puzzles can be played online. Daily Hard Suko Puzzle Wednesday 15th March 2023. Summer Sudoku's game play is the best on the web. The original design and puzzle format was also created by Jai. The original design and puzzle format was also created by Jai. 5 4 1 8 2 7 4 7 6 9 2Place the digits 1 through 9 into each of the rows, columns, and 3x3 boxes, only once! Complete the entire puzzle to win. Morgan Cutolo Updated: Jan. The original design and puzzle format was also created by Jai. The original design and puzzle format was also created by Jai. The original design and puzzle format was also created by Jai. This allows you to have a rest and escape from everyday routine. Play Suko, the world's most delightful number-placement puzzle. Play unlimited sudoku puzzles online. This is an example of an easy Suko starting grid, and we can immediately see that there are a couple of numbers we can insert. This is an example of an easy Suko starting grid, and we can immediately see that there are a couple of numbers we can insert. Compatible with all browsers, tablets and phones including iPhone, iPad and Android. Today’s crosswords, sudoku and puzzles from The Times and The Sunday Times. This is an example of an easy Suko starting grid, and we can immediately see that there are a couple of numbers we can insert. Suko is a Trademark owned by Jai Kobayaashi Gomer of Kobayaashi Studios. Suko is a Trademark owned by Jai Kobayaashi Gomer of Kobayaashi Studios. Daily puzzle Archive Rules. Suko is a Trademark owned by Jai Kobayaashi Gomer of Kobayaashi Studios. Good luck!Play unlimited sudoku puzzles online. These printable sudoku puzzles are four different levels of difficulty.