Next to 9 Sudoku 2015 - 1

A Happy New Year to all the puzzlers out there. May 2015 fulfil most if not all your dreams :)

We are just 1 day away from the start of the 2015 World Sudoku Grand Prix. All the best to all the participants. Here is one last practice puzzle before we head into the first leg of the Sudoku GP.

Today we have a Next to 9 Sudoku. Digits outside the grid indicate the digits that encompass the digit 9 in that row or column.

Round Off Sudoku 2014 - 1

Lets try another Sudoku which will be appearing in the First leg of the Sudoku Grand Prix 2015. This is a Round Off Sudoku.

Rules of Classic Sudoku apply. Additionally, each cage represents the rounded off value for the two digit number inside the cage to the nearest multiple of 10. Ending digits 1-4 are rounded down and 5-9 are rounded up.

All Odd All Even Sudoku 2014 - 1

It has been a long time since I created and posted a puzzle. Work has been hectic at office.

With the Sudoku Grand Prix set to begin next weekend, here is a practice sudoku.

Rules of Classic sudoku apply. Additionally, grey cells in each region contain all odd or all even digits.

Hope you enjoy this and I will try to make it more frequent :)

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.

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.

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.

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.