Thanks to Alok Mittal for introducing me to Ken Ken puzzles through his Mathematical Circle classes – I spent a good chunk of my last week trying to solve the Ken Ken puzzles. Liked them so much, that I thought it would be worth sharing them.

Ken Ken puzzles are like a Sudoku, in the sense that you have to fill out unique number without repetition in every row and column, and also satisfy the specific condition in each of the bolded areas (condition specified in top left). Detailed instructions on this link:

http://www.kenkenpuzzle.com/howto/solve

Here is an example:

Puzzle 88 – Example

Answer: 3214, 1423, 4132, 2341

Here are two puzzles – first one is easy and the second one is difficult.

Puzzle 88 – Easy

and the difficult one…

Puzzle 88 – Difficult

Happy Ken Ken’ing!