Energy Source Sudoku

It's new! It's hot! You can do it interactively below by dragging and dropping the energy sources on the left to the proper space or print it off.

Sudoku is a logic-based placement puzzle consisting of a 9x9 grid of cells. Typically using numbers, this puzzle uses energy source symbols for biomass, coal, geothermal, hydropower, natural gas, petroleum, solar, uranium and wind. To solve the puzzle, drag and drop the energy sources on the left to the proper space so that each 3x3 region of the grid contains only one source symbol and each row and each column of the puzzle also contains only one energy source symbol. There is only one solution. Good luck!

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