AntiKnight-Nonconsecutive Sudoku 2013 - 2

Last one week has been  hell and effects are still there on my health. Still not completely recuperated but atleast able to login and get back to some sudoku creation. Hopefully there won't be any more disruptions in the puzzling activities.

Today's puzzle is also part of my contribution towards the Daily League group on FB. It is an Anti-Knight Non-Consecutive Sudoku.

another development for the daily league is that now all people will be able to solve our puzzles online at the sudokucup.com website. I will be posting links and more details on that shortly today. In the mean time enjoy this puzzle for today.

Rules of Classic Sudoku apply. Additionally, consecutive numbers cannot occupy orthogonally adjacent cells and a digit cannot repeat at a knights step from itself. Basically a nonconsecutive sudoku and an antiknight sudoku rolled into one.

Little Killer Sudoku 2013 - 1

It has been a one hell of a tiring week. Too much of travelling and sudoku creation for a few championships. I am packing my bags for another bit of travel as I get ready to upload this puzzle. This Little Killer Sudoku serves the Daily League at FB as well as practice for the WPF GP that takes place this weekend on the German website.

At the Daily league wed had a wonderful start with an Equal Sudoku by Cristoph. A very well made sudoku. Tuesday was Prasanna's turn with a Between 1 and 9 sudoku which was again very well made with only two given hints. Wednesday was Bastien's Fortress Sudoku.

For the Little Killer, apply standard sudoku rules. Additionally, digits outside the grid denote the sum of all digits in the corresponding direction of the arrow.

Classic Sudoku 2013 - 3

Today is a hurriedly made Classic Sudoku due to lack of time.

Fill the grid such that each row, column and 3x3 box has the digits 1 - 9.

Irregular Non-Consecutive Sudoku 2013 - 2

Lets solve this Irregular non-Consecutive Sudoku as practice for the German leg of the WPF GP.

Every Row, Column and irregular shaped regions must contain the digits 1 to 9 without any repetition. Additionally, horizontally and vertically adjacent digits cannot be consecutive.

Search 9 Sudoku 2013 - 1

Today we will attempt to solve a Search 9 Sudoku as practice for the Third leg of the WPF GP.

Rules of Classic Sudoku apply. Additionally, arrows in a cell point towards the digit 9. The number 9 is always at a distance equal to the digit in the cell with the arrow. All possible arrows are marked.

Anti-Knight Sudoku 2013 - 2

Valentines day is a day of Love. Every Damsel has her Knight in shining armour. In order to avoid Knights fighting over a pretty damsel, we have today a Valentine special  Anti-Knight Sudoku.

Rules of Classic Sudoku apply. Additionally a number cannot repeat at a cell which is at a knight's step from itself.

Consecutive Sudoku 2013 - 2

The Second leg of the WPF Grand Prix is over. There was nothing new to the puzzles. They were obviously of the highest quality that we have come to expect from Deb over the years. Kudos for the wonderful set. The results were much better than expected. I ended up 6th which was nice to see for a change.

The best puzzle that I liked was the Even Odd Big Small Sudoku. The twist of determining the application of symbols was truly a masterstroke. I personally prefer sudokus that make a solver think instead of just rushing with filling in the numbers. Part of this could be because I am not as fast as some of the solvers in the world like Jakub O, Tiit, Jan M to name a few. So when Sudokus make a solver pause and think, gives players like me a chance to catch upas I feel that is my strength.

With the third leg in less than 2 weeks away, it is time to start practicing for them. In case you have not downloaded the Ib, it is available at this link. The third leg is being conducted by the Germans and you may want to register at their website, incase you have not already done so.

So to begin the practice for that, we start of with an easy-medium level Consecutive Sudoku.

Rules of Classic Sudoku apply. Additionally, cells sharing a border with a thick line can contain only consecutive digits. Cells without the thick border cannot contain consecutive digits. Happy Solving.

Even Odd Jigsaw 2013 - 1

Today we will have an Even Odd Jigsaw Sudoku. Its your typical Jigsaw sudoku with cells having even digits marked in grey.

Fill the Grid such that every, row, column and irregular shaped box contain the digits 1 to 9. Additionally, cells marked grey can contain only even digits.

Killer Sudoku 2013 - 2

The WPF GP has started at the LMI site today. This is my last contribution towards practice. Today its a Killer Sudoku.

Rules of classic Sudoku apply. Additionally, numbers at the top of a cage denote the sum of the digits inside the cage. A digit cannot repeat inside a cage.

Quad Sum Sudoku 2013 - 1

Initially I had thought of posting a Killer Sudoku today for the GP Practice. Then I realised that a Killer Sudoku would be readily available to all. So I decided to create a Quad Sum Sudoku.

This is of an Easy-Medium Difficulty level and should not take more than 5 minutes for an average solver. Top solvers should easily be able to crack it in under 3 minutes.

Rules of Classic Sudoku apply. Additionally, a circle at a corner implies that 1 digit is the sum of the other 3 digits around that corner.

Toroidal Sudoku 2013 - 1

In continuation with providing practice puzzles for the WPF GP, today we have a medium level Toroidal Sudoku.

This is an 8x8 Sudoku. Ensure that every row, column and irregular shaped regions contain digits 1 to 8. some regions wrap around the grid and are shown open ended.

Enjoy.

Trio Sudoku 2013 - 3

With a Splurge of tough puzzles at the Daily League, I decided to have an easy Trio sudoku for the speed freaks :) ( No ill intention intended towards anyone)

Rules of Classic Sudoku apply. Additionally, cells having circles can contain only the digits 1,2 or 3. Cells will rectangles can contain only the digits 4,5 and 6.

XV Sudoku 2013 - 1

We are in the middle of the week with just 3 more days left to go for the second leg of the WPF GP. Hope the sudokus are of help and it is time to move ahead from easy puzzles to medium difficulty level puzzles that make you think a wee little bit.

Today we will attempt an XV sudoku.

Rules of classic sudoku apply. Additionally, if there is a "v" between two cells then the digits of those cells add upto 5. If there is a "x" then the digits of those 2 cells add upto 10.

Happy Solving.

Odd Sudoku 2013 - 1

In continuation to the preparation for the Grand Prix, today we are going to solve an Odd Sudoku. This is again an easy sudoku to familiarise people with the variant.

Rules of classic Sudoku apply. Additionally, cells marked grey can contain only the odd digits 1,3,5,7,9.

Odd Even Big Small Sudoku 2013 - 1

Next weekend we will see the second leg of the WPF initiated Sudoku Grand Prix to be hosted at the logicmastersindia website.

It is an innovative mix of puzzles and I would recommend everyone to try it. In order to prepare for the Grand Prix and also provide Practice material for all, I have decided to create sudokus which are going to be there in the actual competition. Karel at Sudokucup is also preparing some variants so I will not try and duplicate them, and will attempt to create examples of other variants.

To begin I have produced an Easy Level Odd Even Big Small Sudoku. Have deliberately kept it easy so that more and more people get accustomed to the rules of the sudoku and adapt themselves. Instead of the Japanese symbol notification, I have used the English Alphabet.

Every row, column and 4x2 box contains the digits 1 to 8 without any repetition. Additionally, The letters outside the grid denote the first two digits in the first two cells for that particular row or column.
E denotes even numbers. (2,4,6,8)
O denotes Odd numbers. (1,3,5,7)
B denotes Big Numbers (5,6,7,8)
S denotes small numbers (1,2,3,4)

Hope you enjoy this simple creation.

Non Consecutive Sudoku 2013 - 2

Today the Daily League completes 4 weeks. It has been a fun filled time. The week ends with another nice variation by Kwak. The booklet for week 4 will be available for download publicly in a few days time.

The second leg of the Sudoku Grand Prix being conducted by the WPF is going to take place at the LMI website next weekend. If you have not done so already then please register at the WPF site.

Till then we have a Non-Consecutive Sudoku today. I would rate it as medium difficulty level. Experts would take about four minutes to solve it, I would estimate.

Rules of Classic Sudoku apply. Additionally horizontally and vertically adjacent cells cannot contain consecutive digits.

Even Odd Sudoku 2013 - 3

Today we have an Even Odd Sudoku that makes you think just a wee little bit.

Rules of Classic Sudoku apply. Additionally, cells marked grey can contain only even numbers.

Argyle 2013 - 1 new

Well, I have received feedback that the dark lines are causing a distraction so uploading a new version with lighter lines. Though this puzzle was for Last Thursday, but since people are still solving it at the Daily League, I am uploading it again so that people can solve it on the new one.

Daily League Update

The Daily League is getting hotter and hotter with every passing week. We now have Yuhei too who showed an interest to join and solve along with other solvers from around the globe. We have completed nearly four weeks of the League and the booklets for Week two and week three are publicly available for download. In these booklets you will find the fastest time of the league for a given puzzle which stays as the Expert Time. See if you can beat that.

Week Two booklet is available here.

Week Three booklet is available here.

Windoku 2013 - 2

I am back in town and a lot of catching up needs to be done on the solving front. A lot of great puzzles have been put up at the Daily League by Fred, Prasanna, Bastien, and Tom C. Looking forward to fun filled solving during the weekend.

To Kick of February, I have a Windoku for you.

Rules of classic sudoku apply. Additionally, the four marked 3x3 extra regions also contain distinct digits 1 to 9.