Solve the New York Times "Kenken" puzzle by filling in various numbers based upon the mathematical operation in an enclosed portion of the grid puzzle. Your puzzle grid is complete when all squares are filled.
- Pick your grid
The New York Times puzzle lets you choose grid sizes between 4-by-4 up to 8-by-8. You cannot use numerals higher than the grid size, meaning a 4-by-4 grid uses numbers one through four.
- Solve individual cages
Start with easier problems and work your way to harder solutions. Combine numbers, in any order, to solve the problem within the heavily outlined shapes in the grid, called cages. Each cage has a mathematical function such as addition, subtraction, multiplication and division. The numeral next to the arithmetical function is the answer to the problem.
- Do not repeat numbers in columns and rows
Do not duplicate numbers across a vertical column or horizontal row within the grid. Use numerals more than once within a cage as long as they are in separate rows or columns.
- Start easy before increasing difficulty
Begin by solving easier puzzles, such as a 4-by-4 grid, that have easy answers such as "2-" in a two-numeral grid. Two answers are four and two in the same cage, or three and one. This is because both problems equal two when the smaller number is subtracted from the larger number.