Sudoku Two-By-Two Grids With Four Values - Worksheet Works
www.worksheetworks.comThis is the easiest form of Sudoku. It only uses four unique values (numbers or letters) and each board can be solved in just a handful of steps.
Sudoku puzzles - Vegard Hanssens hjemmeside
www.menneske.noSudoku puzzles (Su Doku) ... Rules: Fill in the grid so that every row, every column, and every 2x2 box contains the digits 1 ... Difficulty: Super easy (0)
Sudoku Puzzles: Easy - MathSphere
www.mathsphere.co.ukMathSphere. Sudoku. Fill in the puzzle so that every row across, every column down and every 2 by 2 box contains the numbers 1 to 4. Easier Puzzle 1.
2 x 2 Easy Killer Sudoku - Puzzles Mobile
www.puzzles-mobile.comOnline logic puzzles, optimized for mobile devices.
Killer Sudoku
www.puzzle-killer-sudoku.comPlay online Killer Sudoku - play online the puzzle game also known as Sumdoku. ... 2x2 Easy Killer Sudoku · 2x2 Normal Killer Sudoku · 2x2 Hard Killer ...
Free Kid Sudoku Puzzles - PrintActivities.com
www.printactivities.comThese easy free kid sudoku puzzles are meant for teaching kids the basic logic for solving ... Each 4x4 kid sudoku puzzle is divided into four 2x2 squares.
Printable Sudoku Worksheets for Kids - Free Puzzles
www.kidsmathgamesonline.comEnjoy sudoku puzzles of all levels including easy, medium, hard and challenging as well as a 9x9 template to help you come up with your own sudoku puzzles.
Back to School - Easy Sudoku (Book) - BigActivities
www.bigactivities.comInstructions: Fill in the missing numbers (from 1 to 4) to solve the Sudoku puzzle. Each column, row and 2x2 subgrid must only contain each number once. 3 ...
Easy Sudoku Book (2x2 and 4x4) for Kids & Beginners
www.amazon.comLittle Sudoku Genius (Elementary): Easy Sudoku Book (2x2 and 4x4) for Kids & Beginners [Whiz, Child] on Amazon.com. *FREE* shipping on qualifying offers.
4x4 Sudoku for Kids with numbers
www.sudokuonline.ioThey are easy and perfect for beginners to get acquainted with the dynamics and rules of the game. Even adults can use them to learn how to play Sudoku puzzles ...
Play Free Sudoku online - solve daily web sudoku puzzles
sudoku.comPlay free Sudoku online from Easy to Expert level on Sudoku.com. Select a difficulty level of a web sudoku puzzle to challenge yourself and enjoy the game!
Sudoku for Kids - Puzzles to Print
www.puzzles-to-print.comMany kids will soon be ready for "adult" sudoku, so have a look here as well: Easy Sudoku Puzzles. beginner sudoku easy thumbnail. Beginner Sudoku Easy.
4x4 Sudoku Puzzles
www.sudoku-download.net4x4 Sudoku Download. Sudoku for Kids You will find different 4x4 Sudokus on this page. These particularly easy Sudoku puzzles are well suited for beginners ...
Sudoku Workbook - PDST
pdst.ieThis can lead to students being able to solve maths problems in their heads easily and rapidly. Patterns and Sequence. Sudoku puzzles are often solved by ...
Sudoku For Kids | Puzzle Games Online - MyPuzzle.org
mypuzzle.orgTime: 00:06. Practice Mode. Easy, Standard, Difficult. Yes No Good game? Sudoku · Sudoku 6x6 · Color Link-a-Pix.. Pic-a-Pix.
Free Mini Sudoku Puzzles to Play Online
sudoku.coolThe solving process of Mini Sudoku is to fill numbers from 1-N in NxN grids. Numbers cannot be repetitive in each row, each column, each group (2x2, 2x3 and 2x4 ...
Medium - Web Sudoku
www.websudoku.comPlay unlimited sudoku puzzles online. Four levels from Easy to Evil. Compatible with all browsers, tablets and phones including iPhone, iPad and Android.
Mathematics of Sudoku - Wikipedia
en.wikipedia.orgThe "Rel Err" column indicates how a simple approximation based on calculated band counts (detailed in the sections below) compares to the true grid count: it ...
Algorithm for solving Sudoku - Stack Overflow
stackoverflow.comHere is my sudoku solver in python. It uses simple backtracking algorithm to solve the puzzle. For simplicity no input validations or fancy output is done.
Sudoku - Play free Sudoku online
1sudoku.comJust click & Play sudoku online for free on mobile, tablet or computer, with 5 difficulty levels: easy, medium, hard, expert and evil. Also print sudoku for ...
2x2 and 4x4 Sudoku Puzzles for Kids by Nicola I Kattan, Peter ...
www.barnesandnoble.comThis is a book containing Sudoku puzzles for young children - ages 3 - 5 years and up. All the puzzles in the book are simple 2 x 2 and 4 x ...
Sudoku | Backtracking-7 - GeeksforGeeks
www.geeksforgeeks.orgMethod 1: Simple. ... Create a function that checks if the given matrix is valid sudoku or not. ... N is used for the size of Sudoku grid.
Make and Print Free SUDOKU Puzzles | edHelper.com
worksheets.edhelper.comPre-Made Sample: Easy 9 x 9 Sudoku - no hints (unknown cells are blank) ... Fill in the grid so that every row, every column, and every 2x2 box contains the ...
Solving Sudoku with MATLAB - MathWorks
www.mathworks.comCleve Moler discusses solving sudoku puzzles with MATLAB. ... It is not easy to program a computer to duplicate these human pattern-recognition capabilities ...
Sudoku 4x4 Solver - Sudokids - Online Tool - dCode
www.dcode.frGenerally 4x4 sudoku do not use the blocks / regions (because this is often not necessary) but there may be some with irregular shapes (and not necessarily 2x2) ...
▻Sudoku on the App Store
apps.apple.comDownload ▻Sudoku and enjoy it on your iPhone, iPad, and iPod touch. ... The highlighting of the buttons makes it easy to see which number you are working ...
22 Sudoku Cube ideas in 2021 - Pinterest
www.pinterest.com8.78US $ |Shengshou 2x2 Pyraminx Cube Triangle Pyramid Pyraminx Pyramorphix Toys Magic Cube Puzzle Educational Toys Special Toys|shengshou 2x2|2x2 ...
Printable Sudoku puzzles for kids
www.puzzlechoice.comThe rules are simple: For the Level 1 puzzles, place a number between 1 and 4 in each empty cell so. that every row, every column and every 2x2 box contains ...
Daily Kids Sudoku Puzzle for Friday 19th November 2021 (Easy)
puzzlemadness.co.ukYou need to fill each row, column and 2x2 region with the numbers 1-4. Kids Sudoku puzzle. This grid is also 6x6, but the region are arranged vertically instead ...
The Math Behind Sudoku: Some More Interesting Facts
pi.math.cornell.eduA well-formed Sudoku puzzle is one that has a unique solution. ... and easily solve rank-3 Sudokus by employing a backtracking method, solving a Sudoku of ...
sudoku puzzle books - master level sudo - Champ Lopez
www.adlibris.comKöp boken Sudoku: 500 Sudoku Puzzles(Easy, Medium, Hard, VeryHard)(SudokuPuzzleBook)(Volume82): ... It varies in sizes starting from 2x2 until 100x100.**** ...
6 Different Types of Sudoku Puzzles You Should Try
hobbylark.comSamurai Sudoku. Are all of these puzzles too easy for you? Then you might like samurai sudoku. This type of puzzle combines five overlapping 9x9 ...
Sudoku Puzzles - Online Math Learning
www.onlinemathlearning.comSudoku Puzzles (with different levels: very easy, easy, medium, hard, very hard). Sudoku ... Many levels - from 2x2 trivial to 9 jigsaw advanced.
Create a Sudoku Solver in Java | Baeldung
www.baeldung.comBuilding a Sudoku puzzle and an efficient algorithm used for solving it in Java. ... The first solution will be a simple brute-force attack.
Easy Sudoku Puzzles Book for Kids - Goodreads
www.goodreads.comKids Sudoku Puzzles Book with 100 Easiest Puzzles for beginners, in 3 starting versions (2x2, 2x3 and 2x4) up to real Sudoku 3x3. Get A Copy.
Number of Possible Sudoku Puzzle Grids - Business Insider
www.businessinsider.comIn 2005, a computer scientist and a mathematician set out to answer the question, "How many Sudoku puzzles are there?"
Killer Sudoku 9x9 - Easy to Hard - Volume 1 - 270 Puzzles
books.google.comThere cannot be any 2 x 2 blocks of black cells. At http://www.puzzlebooks.net you find Nurikabe books and e-books, free Nurikabe puzzles, discount codes ...
Sudoku Two-By-Two Grids With Four Values - Worksheet Works
www.worksheetworks.comThis is the easiest form of Sudoku. It only uses four unique values (numbers or letters) and each board can be solved in just a handful of steps.
Sudoku puzzles - Vegard Hanssens hjemmeside
www.menneske.noSudoku puzzles (Su Doku) ... Rules: Fill in the grid so that every row, every column, and every 2x2 box contains the digits 1 ... Difficulty: Super easy (0)
Sudoku Puzzles: Easy - MathSphere
www.mathsphere.co.ukMathSphere. Sudoku. Fill in the puzzle so that every row across, every column down and every 2 by 2 box contains the numbers 1 to 4. Easier Puzzle 1.
2 x 2 Easy Killer Sudoku - Puzzles Mobile
www.puzzles-mobile.comOnline logic puzzles, optimized for mobile devices.
Killer Sudoku
www.puzzle-killer-sudoku.comPlay online Killer Sudoku - play online the puzzle game also known as Sumdoku. ... 2x2 Easy Killer Sudoku · 2x2 Normal Killer Sudoku · 2x2 Hard Killer ...
Free Kid Sudoku Puzzles - PrintActivities.com
www.printactivities.comThese easy free kid sudoku puzzles are meant for teaching kids the basic logic for solving ... Each 4x4 kid sudoku puzzle is divided into four 2x2 squares.
Printable Sudoku Worksheets for Kids - Free Puzzles
www.kidsmathgamesonline.comEnjoy sudoku puzzles of all levels including easy, medium, hard and challenging as well as a 9x9 template to help you come up with your own sudoku puzzles.
Back to School - Easy Sudoku (Book) - BigActivities
www.bigactivities.comInstructions: Fill in the missing numbers (from 1 to 4) to solve the Sudoku puzzle. Each column, row and 2x2 subgrid must only contain each number once. 3 ...
Easy Sudoku Book (2x2 and 4x4) for Kids & Beginners
www.amazon.comLittle Sudoku Genius (Elementary): Easy Sudoku Book (2x2 and 4x4) for Kids & Beginners [Whiz, Child] on Amazon.com. *FREE* shipping on qualifying offers.
4x4 Sudoku for Kids with numbers
www.sudokuonline.ioThey are easy and perfect for beginners to get acquainted with the dynamics and rules of the game. Even adults can use them to learn how to play Sudoku puzzles ...
Play Free Sudoku online - solve daily web sudoku puzzles
sudoku.comPlay free Sudoku online from Easy to Expert level on Sudoku.com. Select a difficulty level of a web sudoku puzzle to challenge yourself and enjoy the game!
Sudoku for Kids - Puzzles to Print
www.puzzles-to-print.comMany kids will soon be ready for "adult" sudoku, so have a look here as well: Easy Sudoku Puzzles. beginner sudoku easy thumbnail. Beginner Sudoku Easy.
4x4 Sudoku Puzzles
www.sudoku-download.net4x4 Sudoku Download. Sudoku for Kids You will find different 4x4 Sudokus on this page. These particularly easy Sudoku puzzles are well suited for beginners ...
Sudoku Workbook - PDST
pdst.ieThis can lead to students being able to solve maths problems in their heads easily and rapidly. Patterns and Sequence. Sudoku puzzles are often solved by ...
Sudoku For Kids | Puzzle Games Online - MyPuzzle.org
mypuzzle.orgTime: 00:06. Practice Mode. Easy, Standard, Difficult. Yes No Good game? Sudoku · Sudoku 6x6 · Color Link-a-Pix.. Pic-a-Pix.
Free Mini Sudoku Puzzles to Play Online
sudoku.coolThe solving process of Mini Sudoku is to fill numbers from 1-N in NxN grids. Numbers cannot be repetitive in each row, each column, each group (2x2, 2x3 and 2x4 ...
Medium - Web Sudoku
www.websudoku.comPlay unlimited sudoku puzzles online. Four levels from Easy to Evil. Compatible with all browsers, tablets and phones including iPhone, iPad and Android.
Mathematics of Sudoku - Wikipedia
en.wikipedia.orgThe "Rel Err" column indicates how a simple approximation based on calculated band counts (detailed in the sections below) compares to the true grid count: it ...
Algorithm for solving Sudoku - Stack Overflow
stackoverflow.comHere is my sudoku solver in python. It uses simple backtracking algorithm to solve the puzzle. For simplicity no input validations or fancy output is done.
Sudoku - Play free Sudoku online
1sudoku.comJust click & Play sudoku online for free on mobile, tablet or computer, with 5 difficulty levels: easy, medium, hard, expert and evil. Also print sudoku for ...
2x2 and 4x4 Sudoku Puzzles for Kids by Nicola I Kattan, Peter ...
www.barnesandnoble.comThis is a book containing Sudoku puzzles for young children - ages 3 - 5 years and up. All the puzzles in the book are simple 2 x 2 and 4 x ...
Sudoku | Backtracking-7 - GeeksforGeeks
www.geeksforgeeks.orgMethod 1: Simple. ... Create a function that checks if the given matrix is valid sudoku or not. ... N is used for the size of Sudoku grid.
Make and Print Free SUDOKU Puzzles | edHelper.com
worksheets.edhelper.comPre-Made Sample: Easy 9 x 9 Sudoku - no hints (unknown cells are blank) ... Fill in the grid so that every row, every column, and every 2x2 box contains the ...
Solving Sudoku with MATLAB - MathWorks
www.mathworks.comCleve Moler discusses solving sudoku puzzles with MATLAB. ... It is not easy to program a computer to duplicate these human pattern-recognition capabilities ...
Sudoku 4x4 Solver - Sudokids - Online Tool - dCode
www.dcode.frGenerally 4x4 sudoku do not use the blocks / regions (because this is often not necessary) but there may be some with irregular shapes (and not necessarily 2x2) ...
▻Sudoku on the App Store
apps.apple.comDownload ▻Sudoku and enjoy it on your iPhone, iPad, and iPod touch. ... The highlighting of the buttons makes it easy to see which number you are working ...
22 Sudoku Cube ideas in 2021 - Pinterest
www.pinterest.com8.78US $ |Shengshou 2x2 Pyraminx Cube Triangle Pyramid Pyraminx Pyramorphix Toys Magic Cube Puzzle Educational Toys Special Toys|shengshou 2x2|2x2 ...
Printable Sudoku puzzles for kids
www.puzzlechoice.comThe rules are simple: For the Level 1 puzzles, place a number between 1 and 4 in each empty cell so. that every row, every column and every 2x2 box contains ...
Daily Kids Sudoku Puzzle for Friday 19th November 2021 (Easy)
puzzlemadness.co.ukYou need to fill each row, column and 2x2 region with the numbers 1-4. Kids Sudoku puzzle. This grid is also 6x6, but the region are arranged vertically instead ...
The Math Behind Sudoku: Some More Interesting Facts
pi.math.cornell.eduA well-formed Sudoku puzzle is one that has a unique solution. ... and easily solve rank-3 Sudokus by employing a backtracking method, solving a Sudoku of ...
sudoku puzzle books - master level sudo - Champ Lopez
www.adlibris.comKöp boken Sudoku: 500 Sudoku Puzzles(Easy, Medium, Hard, VeryHard)(SudokuPuzzleBook)(Volume82): ... It varies in sizes starting from 2x2 until 100x100.**** ...
6 Different Types of Sudoku Puzzles You Should Try
hobbylark.comSamurai Sudoku. Are all of these puzzles too easy for you? Then you might like samurai sudoku. This type of puzzle combines five overlapping 9x9 ...
Sudoku Puzzles - Online Math Learning
www.onlinemathlearning.comSudoku Puzzles (with different levels: very easy, easy, medium, hard, very hard). Sudoku ... Many levels - from 2x2 trivial to 9 jigsaw advanced.
Create a Sudoku Solver in Java | Baeldung
www.baeldung.comBuilding a Sudoku puzzle and an efficient algorithm used for solving it in Java. ... The first solution will be a simple brute-force attack.
Easy Sudoku Puzzles Book for Kids - Goodreads
www.goodreads.comKids Sudoku Puzzles Book with 100 Easiest Puzzles for beginners, in 3 starting versions (2x2, 2x3 and 2x4) up to real Sudoku 3x3. Get A Copy.
Number of Possible Sudoku Puzzle Grids - Business Insider
www.businessinsider.comIn 2005, a computer scientist and a mathematician set out to answer the question, "How many Sudoku puzzles are there?"
Killer Sudoku 9x9 - Easy to Hard - Volume 1 - 270 Puzzles
books.google.comThere cannot be any 2 x 2 blocks of black cells. At http://www.puzzlebooks.net you find Nurikabe books and e-books, free Nurikabe puzzles, discount codes ...
Sudoku Two-By-Two Grids With Four Values - Worksheet Works
www.worksheetworks.comThis is the easiest form of Sudoku. It only uses four unique values (numbers or letters) and each board can be solved in just a handful of steps.
Sudoku puzzles - Vegard Hanssens hjemmeside
www.menneske.noRules: Fill in the grid so that every row, every column, and every 2x2 box contains the digits 1 through 4. There is only 1 solution for each puzzle.
Killer Sudoku
www.puzzle-killer-sudoku.comPlay online Killer Sudoku - play online the puzzle game also known as ... The basic Sudoku rules apply. ... 2x2 Easy Killer Sudoku Puzzle ID: 3,807,655.
Printable Sudoku puzzles at beginners level for smaller and ...
www.mathinenglish.comSudoku is a logic game and logic skills are very welcome to math teachers and students! There are quite some variations in the Sudoku layouts, but we feel that ...
Free Kid Sudoku Puzzles - PrintActivities.com
www.printactivities.comEach 4x4 kid sudoku puzzle is divided into four 2x2 squares. Kids solve these sudoku puzzles by placing the numbers 1-4 uniquely in each of the 2x2 sub-squares, ...
2 x 2 Easy Killer Sudoku - Puzzles Mobile
www.puzzles-mobile.comOnline logic puzzles, optimized for mobile devices.
4x4 Sudoku for Kids with numbers
www.sudokuonline.ioThey are easy and perfect for beginners to get acquainted with the dynamics and rules of the game. Even adults can use them to learn how to play Sudoku puzzles ...
Play Free Sudoku online - solve daily web sudoku puzzles
sudoku.comPlay free Sudoku online from Easy to Expert level on Sudoku.com. Select a difficulty level of a web sudoku puzzle to challenge yourself and enjoy the game!
2x2 and 4x4 Sudoku Puzzles for Kids Paperback - Amazon.com
www.amazon.comPreschool Sudoku: 2x2 and 4x4 Sudoku Puzzles for Kids [Kattan, Peter I, Kattan, Nicola I] on Amazon.com. *FREE* shipping on qualifying offers.
Free Sudoku Puzzles - MathSphere
www.mathsphere.co.ukA great set of sudoku puzzles. The aim is to fill the grid so that each row, column and box contains the same numbers, usually one to nine. Simple!
Sudoku For Kids | Puzzle Games Online - MyPuzzle.org
mypuzzle.orgTime: 00:06. Practice Mode. Easy, Standard, Difficult. Yes No Good game? Sudoku · Sudoku 6x6 · Color Link-a-Pix.. Pic-a-Pix.
Mathematics of Sudoku - Wikipedia
en.wikipedia.orgSudoku puzzles can be studied mathematically to answer questions such as "How many filled ... "Sudoku maths – can mortals work it out for the 2x2 square ?
Solved 4. The mini-Sudoku puzzle is a 2x2 version of the
www.chegg.comThe mini-Sudoku puzzle is a 2x2 version of the standard 3x3 Sudoku puzzle. Mini-Sudoku only uses digits from 0-3. The idea is to place numbers 0, 1, 2, 3 in a ...
Sudoku Workbook - PDST
pdst.ieThis can lead to students being able to solve maths problems in their heads easily and rapidly. Patterns and Sequence. Sudoku puzzles are often solved by seeing ...
Beli sudoku 2x2 Pada Harga Terendah | Lazada.com.my
www.lazada.com.myBeli sudoku 2x2 Online | Lebih Murah & Bagus di Lazada | Nikmati Penghantaran Percuma dan Harga Terendah atas Jenama-Jenama & Produk Kegemaran Anda!
2x2 and 4x4 Sudoku Puzzles for Kids by Nicola I Kattan, Peter ...
www.barnesandnoble.comThis is a book containing Sudoku puzzles for young children - ages 3 - 5 years and up. All the puzzles in the book are simple 2 x 2 and 4 x ...
Multi-sudoku 2x2 - PressReader
www.pressreader.comMulti-sudoku 2x2. 2020-09-20 -. Each puzzle consists of two or more Sudoku grids overlapping each other in various configurations.
Free Mini Sudoku Puzzles to Play Online
sudoku.coolThe solving process of Mini Sudoku is to fill numbers from 1-N in NxN grids. Numbers cannot be repetitive in each row, each column, each group (2x2, 2x3 and 2x4 ...
Sudoku 4x4 Solver - Sudokids - Online Tool - dCode
www.dcode.fr... 4x4 sudoku do not use the blocks / regions (because this is often not necessary) but there may be some with irregular shapes (and not necessarily 2x2).
Sudoku 2X2 Mobile Games Online - 4J.Com
www.4j.comThere are 28 Mobile games related to Sudoku 2X2 on 4J.com. Click to play these games online for free, enjoy!
Back to School - Easy Sudoku (Book) - BigActivities
www.bigactivities.comInstructions: Fill in the missing numbers (from 1 to 4) to solve the Sudoku puzzle. Each column, row and 2x2 subgrid must only contain each number once. 3 ...
12000 Method Examples -- Sudoku Assistant - St. Olaf College
www.stolaf.eduThis site gives over 10000 Sudoku examples, illustrating a wide variety of methods. Select a method code to see the examples, then click on its link to load ...
Preschool Sudoku: 2x2 and 4x4 Sudoku Puzzles for Kids
www.snapdeal.comBuy Preschool Sudoku: 2x2 and 4x4 Sudoku Puzzles for Kids online at best price in India on Snapdeal. Read Preschool Sudoku: 2x2 and 4x4 Sudoku Puzzles for ...
Sudoku Kid on the App Store
apps.apple.comDownload Sudoku Kid and enjoy it on your iPhone, iPad, and iPod touch. ... Enjoy 3 different Sudoku boards to puzzle through, from numeral and alphabet 2x2, ...
Veggies Sudoku for Kids and Adults - Apps on Google Play
play.google.comAnimated cute vegetables like tomato, corn, eggplant, carrot, bell pepper and onion have been used in the game. Each character has a voice of its own.
4x4 Sudoku Puzzles
www.sudoku-download.net4x4 Sudoku Download. Sudoku for Kids You will find different 4x4 Sudokus on this page. These particularly easy Sudoku puzzles are well suited for beginners ...
Medium - Web Sudoku
www.websudoku.comPlay unlimited sudoku puzzles online. Four levels from Easy to Evil. Compatible with all browsers, tablets and phones including iPhone, iPad and Android.
Printable Sudoku Worksheets for Kids - Free Puzzles
www.kidsmathgamesonline.comEnjoy sudoku puzzles of all levels including easy, medium, hard and challenging as well as a 9x9 template to help you come up with your own sudoku puzzles.
Varshneyabhushan/kudoSudoku: A sudoku solver ... - GitHub
github.comA sudoku solver,using constraint programming. ... 2, 3], [4, 3, 1, 2], [2, 1, 3, 4]]}. 2X2 sudoku is taken just to demonstrate. It works for any nxn sudoku ...
Sudoku solver
sudoku.awardspace.infoWe solve all types of sudoku puzzles. Select the size of your sudoku puzzle: 4x4 (group size 2x2)
Glossary - Sudoku Republic
www.sudokurepublic.com2x2 -- Technical term for a Sudoku puzzle using a 4x4 grid subdivided into a 2x2 set of 2x2 grids. This is the smallest possible size of sudoku.
Quantum Sudoku Solver - Medium
medium.comA 2x2 grid sudoku can only have at most two solutions, even if the puzzle is entirely blank, so this also means that the solution is easily ...
possible different 2x2 sudoku : General
forum.enjoysudoku.comi was trying to find the number of possible 2x2 sudoku, but i dont know where to start. would someone help me out and tell ...
Get started in Quantum Computing | by Sergio Capape
towardsdatascience.comA 2x2 Sudoku does not require much thinking to solve. ... impressive as it is to solve 2x2 Sudokus using quantum computing, it motivated me ...
Inequalities in 2x2-Sudoku and beyond - KU Leuven
lirias.kuleuven.beAbstract: 2x2-Sudoku (or ShiDoku) is a sized down variant of the usual 3x3-Sudoku puzzle. Its set of constraints contains 56 binary inequalities.