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logic wiz master the grid logic wiz games variants strategies reviews about contact download free best brain training app 2024 master the art of logic millions of puzzle lovers trust logic wiz for their daily mental workout from classic sudoku to 40 mind bending variants every grid is a new challenge download free explore 40 variants 10m downloads 40 variants 4 9 app store 847 solved today 12 day streak arrow german whispers palindrome diagonal thermo classic sudoku our apps five worlds of pure logic each app is crafted with thousands of hand made puzzles smart hints and themed weekly challenges never run out of things to solve editor s pick top rated sudoku variants over 30 different sudoku variants each a distinct logic challenge from thermo to sandwich to german whisper the ultimate sudoku experience bestseller classic sudoku the timeless logic game reimagined six difficulty levels smart hints and thousands of handcrafted puzzles perfect for beginners and pros alike math logic killer sudoku sudoku meets mathematics conquer cages calculate sums and feel the satisfaction of cracking each arithmetic puzzle unique suguru variants a fresh take on grid puzzles combining sudoku and kakuro logic 20 variants with their own rulesets for infinite replayability dynamic logic jigsaw sudoku irregular regions meet classic logic explore a world of creative variants cloud sync and performance stats it s sudoku like you ve never played it before puzzle variants 40 ways to challenge your mind every variant brings a fresh twist on logic master one then discover another the grid never gets old classic sudoku each row column and 3x3 box must have all the digits 1 to 9 only once diagonal each digit 1 to 9 must appear only once on each of the 2 main diagonal lines thermo digits on a thermo line must increase starting from the grey circle sandwich the sum of digits between 1 and 9 in each row must equal to the number to the left of that row similarly the sum of digits between 1 and 9 in each column must equal to the number above that column killer the sum of the digits in each dotted cage must equal to the number at the top left corner of the cage digits cannot repeat in a cage xv cells separated by x must sum to 10 and cells separated by v must sum to 5 adjacent cells without x or v don t have any restrictions kropki the digits in adjacent cells with hollow dot must be consecutive and the digits in adjacent cells with solid dot between them have a ratio of 2 1 adjacent cells with no dots have no restrictions arrow digits along the arrow must sum to the number in the circle at the base of the arrow digits along the arrow can repeat jigsaw each row column and irregular shaped block of 9 cells must have all the digits 1 to 9 only once german whispers the difference between adjacent digits along a german whispers line must be at least 5 color red renban digits on a renban line must be distinct consecutive numbers arranged in any order for example 3 6 5 4 7 color green skyscraper the numbers around the edges of the grid indicate how many skyscrapers are visible from that vantage point taller skyscrapers block the view of shorter ones larger digit means a taller skyscraper 28 more new variants added regularly explore all variants sudoku strategies learn to think like a solver our built in hints teach proven techniques from beginner to grandmaster level understand every move not just the answer beginner hidden single when a digit appears as the only candidate in one cell within a region it s called a hidden single this digit must be placed in that cell beginner naked single when a cell has only one candidate it is called a naked single the digit must be placed in that cell beginner naked pair two cells that see each other and contain only two possible digits are called naked pair these digits can be eliminated from other cells that see both of these cells medium locked set when a group of cells contains the same digit and one of them must be that digit it s called locked set the digit can be eliminated from any cell that sees all the locked set cells expert swordfish a swordfish pattern occurs when a digit x is a candidate in exactly three rows and in each row x appears only in the same three columns this means x must be placed in those cells and it can be eliminated from other rows within those columns similarly the strategy also works if rows and columns are swapped in this description swordfish doesn t have to include the digit in all the 9 cells of the pattern expert x wing the x wing strategy involves finding two rows or columns where a candidate appears in exactly two cells and these cells align in the same columns or rows if this pattern is found the candidate can be eliminated from other cells in those columns or rows the strategy can be extended to additional type of regions like diagonal variant killer in the killer variant we examine which digits can fit in each cage and make decisions based on various board rules and restrictions there are multiple killer strategies with varying levels of difficulty variant sandwich the sandwich variant has multiple strategies with varying degrees of difficulty 36 more strategies from naked singles to forcing chains browse all strategies by the numbers trusted by puzzle lovers worldwide 10 m total downloads 40 puzzle variants 4 9 average rating 50 k puzzles available player reviews what our players say millions of daily players here s what keeps them coming back an absolute masterpiece i ve tried every sudoku app on the market and nothing comes close to the depth of variants here sarah m app store sudoku variants simply a brilliant app the hint system actually teaches you strategy instead of just giving you answers david k google play classic sudoku best game i have ever used the killer sudoku is genuinely the hardest mental workout i ve found in a mobile app priya r app store killer sudoku one of a kind i started as a complete beginner and the progression system took me from naked singles to x wings in weeks james t app store jigsaw sudoku the only app you need i ve been playing for three years and still discover new variants the themed weekly challenges are a highlight of my week emma l google play suguru variants best app without exception clean design no ads interrupting my flow and the puzzle quality is extraordinary marco p app store sudoku variants why logic wiz designed for serious puzzle lovers where deep expertise meets an relentless pursuit of the perfect puzzle experience smart hints our hint engine doesn t just solve it teaches every suggestion explains the logical strategy so you improve with each puzzle ️ handcrafted puzzles every puzzle is carefully crafted by human experts no algorithm generated filler only puzzles with elegant logical solutions themed weekly challenges fresh themed puzzles every week compete globally track your streak and push your limits with community challenges ️ cross device sync start on your phone continue on tablet progress syncs instantly across all your devices via the cloud performance analytics track your solve times favorite strategies and improvement over time with detailed statistics and personal bests ️ always growing we constantly add new variants puzzles and features based on player feedback logic wiz grows with you founded 2020 built by puzzle lovers for puzzle lovers recognition best brain app multiple award winner our story precision thinking purposeful design founded in 2020 logic wiz was established with a clear mission to redefine the standard for logic puzzle applications on mobile platforms where others prioritised accessibility over depth we chose to build for the serious player delivering an experience grounded in authentic strategy cognitive challenge and design integrity every puzzle in our catalogue is handcrafted by expert constructors ensuring each challenge meets the highest standards of logical rigour and playability no algorithms no filler just thoughtfully designed puzzles built to reward genuine skill today logic wiz is trusted by millions of players across the globe our team remains focused on a single objective engineering the world s most comprehensive and rewarding logic puzzle platform every product decision is informed by our player community ensuring that each update raises the bar further best brain training app app store awards best sudoku app google play editorial 4 9 stars across 100 000 ratings your next puzzle is waiting download free no subscription required start with classic explore 40 variants at your own pace browse our games get in touch we love hearing from our players have a feature idea found a bug or just want to share your streak we read every message personally your name email address message send message logic wiz logic wiz 2026 contact privacy terms help