Start with an easy KenKen which is a 4×4 grid.
How to Play KenKen
See video that gives you a quick summary of the game and how to play and solve them.
Basically, you have a square grid of cells. You put a digit into each cell. The digits are 1, 2, 3, etc. up to the size of the grid. So for a 4×4 grid above, you can only use the digits 1, 2, 3, and 4. For a 6×6 grid below, you can use the digits from 1 to 6.
You will notices that cells are grouped into “cages” as denoted by their darken outlines. Each cage as a number with a mathematical symbol. The digits that you put in the cells must result in that number if you apply the mathematical operation on the digits. Furthermore, any row or column in the overall grid can not have a repeating digit.
KenKen Strategy
So the strategy is to use the above constraint rules to eliminate which digit can not go into each cell. This game is basically a process of elimination. Start working on the smaller cages first. That way fewer possible digits can go into them. One you have filled in the smaller cages, the digit in there will constraint what digits you can put in the other rows and columns.
More difficult 6×6 KenKen
Once you’ve mastered the strategy of KenKen, try a more difficult 6×6 KenKen grid …
Have fun.