Monday, 31 March 2008


The visitor stats from this blog reveal that the UK and US are eager for more kenken, followed by Hong Kong.

puzzle 7

I tried to make this one a bit more difficult...

Book recommendations

Sunday, 30 March 2008

Thursday, 27 March 2008

puzzle 5

new puzzle

and solution

Wednesday, 26 March 2008

puzzle 4

Here is the fourth puzzle, hope you like it

And the solution

Tuesday, 25 March 2008


again about the rules, if you have a n by n grid, you need to fill in each row and column the numbers 1 to n, not repeating any, in each box you have a given result and maths operations, fill in the number which together with the operation give the result, you can repeat numbers in a box, but not in a row or column.


feel free to leave any comments and also vote if the puzzles are too easy or difficult.


... was created by Japanese mathematics teacher Tetsuya Miyamoto.

Monday, 24 March 2008

puzzle 2

Here is a bigger puzzle 6x6.

The puzzle

The solution

Saturday, 22 March 2008


This is a new blog about the japanese kenken puzzle, puzzles to follow soon ...