Your Free Sudoku Puzzle
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Play Intermediate Sudoku Puzzles Online
This is the medium difficulty level on our website. The puzzles at this level have fewer pre-filled digits than those at the kindergarten and elementary levels. Therefore, they require more concentration and observation. At the same time, you need a little more patience. Sometimes you may have to go through many attempts to find the correct location for a digit or to find the right digit for an empty cell. Although the two basic solving techniques, hidden single and naked single, should be enough for solving these puzzles, more advanced techniques such as locked candidates, naked pair, and hidden pair will definitely help if you can apply them in some parts of the game. Also, these advanced techniques are essential for more difficult puzzles. So, you may want to learn them first before moving to the next level.