Puzzle No. 506 & 507: Trio Sudoku, Anti-Diagonal Sudoku [Daily League]

The Trio Sudoku is actually last week’s puzzle. I’d posted it on facebook but hadn’t posted it here. Thats rectified now. Its not the usual Trio Sudoku, but I prefer this slight tweak because it gives more to work with overall.

Remember that you can solve the puzzles from the League online on the Sudokucup Guest League page with a 24h delay. The Anti-Diagonal is today’s offering and will be the one appearing tomorrow on the online solver.

Also, a new puzzle genre I thought of debuted on GM Puzzles this past week. Its called Balance Loop. Have a go at these!

Balance Loop 1.

Balance Loop 2.

Balance Loop 3.

Rules for 506 – Follow regular Sudoku rules. Additionally, Circles must contain only digits 1, 2 and 3. Small squares must contain only digits 4, 5 and 6. Diamonds must contain only digits 7, 8 and 9.

Rules for 507 – Follow regular Sudoku rules. Additionally, each marked diagonal must contain exactly three distinct digits.




Puzzle No. 421 : Diagonal Compromise Sudoku [Daily League]

The Indian Sudoku Championship is online on LMI on 11th August! This is a fair competition open to all, and the winner will be regarded as the official Indian Champion for the year 2013. The top few will be invited to the World Sudoku Championships in an individual capacity. For more details, and in case of any queries, visit the forum topic. To download the Instruction booklet, check the submission page.

Now to today’s sudoku,


Remember that you can solve the puzzles from the League online on the Sudokucup Guest League page with a 24h delay.

Rules – Follow regular Sudoku rules. Additionally, one of the marked diagonals has 9 distinct digits (Diagonal Sudoku) and the other marked diagonal has exactly 3 distinct digits (Anti-Diagonal Sudoku). It is up to the solver to determine which is which.

Rated – Hard. 




Puzzle No. 370 : AntiDiagonal + Fortress Sudoku [Daily League]


Daily League PDF – Week 13.

A little announcement – Around a month or so ago, I was contacted by the people of Sportz Consult, a Sports Management Company that is interested in branching out to Intellectual games. The first such competition, Delhi Brain Games will be held in Delhi this Sunday, and a part of this event is the Solvathon (Instruction booklets available on that link, to those of you who are reading this, are new to puzzles in general, and have registered for the games, these booklets are highly descriptive of what you will be challenged with in the actual events). The Solvathon consists of an hour long Sudoku part and an hour long Puzzle part, and they wanted us (me and Rohan Rao) to provide puzzles for the event. We’ve also provided the material for the Mental Math event.

Since I’ve been busy with this, my exams and many other things, I’ve not been able to give time to posting about this earlier. However, I will say to Indian puzzle enthusiasts in general to watch out for more such events organized by Sportz Consult in the future.


Now, back to “business as usual”. Today’s Sudoku is a hybrid. It might be difficult simply based on the hybrid rules coming into play. Both the variants I chose are quite restrictive, but this is one of those where I was particularly adamant to make it work for some reason. In the end it turned out nice enough I think.

Rules – Follow regular Sudoku rules.  Additionally, each of the main diagonals must contain exactly 3 distinct digits. Also, the digits in the shaded cells must be higher than their orthogonal neighbours.